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Afghanistan Civil Aviation Authority CNS Manual V.1 __________________________________________________________________________________

First Edition 10th October 2019 of 27

AFGHANISTAN CIVIL AVIATION AUTHORITY

CNS Manual V.1

Communication, Navigation and Surveillance Manual Volume – 1: Flight Inspection of CNS Facilities

First Edition – 10th October 2019 CNS Directorate

Published by Afghanistan Civil Aviation Authority



RECORD OF AMENDMENTS

No Date Applicable Date Entered Entered by



TABLE OF CONTENTS

Record of amendments ..............................................................................................................2

Table of Contents........................................................................................................................3

Introduction................................................................................................................................5

Abbreviations..............................................................................................................................6

Chapter 1 General ......................................................................................................................7

1.1 Title of the Document ......................................................................................................... 7

1.2 Purpose of this Document....................................................................................................7

1.3 Control of this Document..................................................................................................... 7

1.4 Enquiries............................................................................................................................... 7

Chapter 2 Flight Calibration .......................................................................................................8

2.1 Requirements .......................................................................................................................8

2.2 Process ................................................................................................................................. 8

2.3 Flight Check Profiles .............................................................................................................9

2.4 Type of Inspection ................................................................................................................9

2.5 The facilities to be flight inspected.......................................................................................10

2.6 Periodicity of Flight Inspection ............................................................................................10

2.7 Preflight Inspection Preparations.........................................................................................11

2.8 In-Flight Inspection Action by the Ground Personnel ..........................................................11

2.9 Post-Flight Inspection Action by the Ground Personnel.......................................................11

2.10 Corrective Measures on Submission of Flight Inspection Report........................................12

Chapter 3 Tender for Inspection Work........................................................................................13

3.1 Tender Process.......................................................................................................................13

3.2 GENERAL TERMS AND CONDITIONS OF TENDER....................................................................13

3.3 SPECIAL TERMS AND CONDITIONS OF TENDER .....................................................................17

Chapter 4 Technical Specification of Flight Inspection System....................................................18

4.1 Technical Specification of Flight Inspection System (FIS) ......................................................18

4.2 Technical Details of Calibration Aircraft: Aircraft Type and Registration ..............................19

4.3 Information Regarding Flight Crew........................................................................................20

Chapter 5 Flight Check Reports....................................................................................................22

Chapter 6 Flight Inspection of ILS Localizer .................................................................................23



6.1 Localizer Flight Inspection ...................................................................................................23

6.2 Identification Coding Check.................................................................................................23

6.3 Mod Balance and Mod-Depth Check...................................................................................23

6.4 Course Width and Clearance check .....................................................................................23

6.5 Course Structure Alignment Check .....................................................................................24

6.6 Alignment of Monitor Alarm Check.....................................................................................24

6.7 Polarization Check................................................................................................................24

6.8 Course Width Symmetry Check ......................................................................................... 24

Chapter 7 ILS Glide Path Flight Inspections...............................................................................25

7.1 Glide Path Parameters Checks ............................................................................................25

7.2 Antenna Null Checks ...........................................................................................................25

7.3 Phasing Check......................................................................................................................25

7.3 Glide Angle and Sector Width check....................................................................................25

7.4 Glide Angle & Path Structure check.....................................................................................25

7.4 Monitor Checks....................................................................................................................26

7.5 Azimuth Coverage ...............................................................................................................26

Chapter 8 VOR Flight Inspection................................................................................................27

8.1 VOR Parameters Checks.......................................................................................................27

8.2 Identification check..............................................................................................................27

8.3 Sensing and rotation............................................................................................................27

8.4 Modulation Levels Check.....................................................................................................28

8.5 Orbit Checks ........................................................................................................................28

8.6 Radial Checks ......................................................................................................................28

8.7 Polarization Check...............................................................................................................28

8.8 Coverage Check...................................................................................................................29

8.9 Bearing Monitor Alarm Check ............................................................................................29

Chapter 9 Flight Inspection of DME & NDB..............................................................................30

9.1 DME Parameters Checks.....................................................................................................30

9.2 DME Flight Inspection ........................................................................................................30

9.3 NDB Parameters Checks....................................................................................................31

9.4 NDB Flight Inspection........................................................................................................31



Chapter 10 VASI/PAPI CALIBRATION.......................................................................................32

10.1 VASI/PAPI Flight Inspection ............................................................................................32

10.2 Color Transition Check.....................................................................................................32

10.3 Approach Angle Check.....................................................................................................32

10.4 Azimuth Coverage Check.................................................................................................32



ABBREVIATIONS

ACAA Afghanistan Civil Aviation Authority (ACAA)

FIU Flight Inspection Team

GPS Global Positioning System

ICAO International Civil Aviation Organization

LT Laser Tracker

PAPI Precision Approach Path Indicator

PDGPS Phase Resolution Differential GPS

VASI Visual Approach Slope Indicator

ATM Air Traffic Management

HKIA Hamid Karzai International Airport

GMN General Management of Navigation

FAA Federal Aviation Administration

EASA European Aviation Safety Agency

RNAV Area Navigation

ILS Instrument Landing System

DME Distance Measurement Equipment

DVOR Doppler Very High Frequency Omni Directional Range

PSR Primary Surveillance Radar

SSR Secondary Surveillance Radar

MLAT Multilateration

WAM Wide Area Multilateration

ADSB Automatic Dependence Surveillance-Broadcast



CHAPTER 1

GENERAL

1.1 Title of the Document

This document is identified as Communication, Navigation and Surveillance Manual, Volume

– 1: Flight Inspection of CNS Facilities (CNS Manual V.1).

1.2 Purpose of this Document

Purpose of this document is to provide information and guidelines pertaining to flight inspection of

CNS facilities, which are essential for the provision of safe and efficient air traffic services by

Afghanistan Civil Aviation Authority (ACAA) (ACAA). It is published for use and guidance of its CNS

Maintenance and operational personnel

1.3 Control of this Document

Directorate of Communication will control this Manual electronically through ACAA website. A

current copy of the Manual will be published on Civil Aviation Authority of Afghanistan website.

Address: www.acaa.gov.af.

1.4 Enquiries

Enquiries/Clarifications should be addressed to:

Director (CNS)

Afghanistan Civil Aviation Authority (ACAA)

Vicinity of HKIA Airport

Telephone: +93 (0) 708 100 006

E-mail: [email protected]



CHAPTER 2

FLIGHT CALIBRATION

2.1 Requirements

Flight inspection and calibration of CNS facilities is mandatory as per the Air Navigation Order ANO

(COM) A.1, Paragraph 2.7. It is a requirement that all navigation facilities installed at different

airports in Afghanistan will be periodically inspected and calibrated by flight inspection team with

suitably equipped aircraft. The work will be done under the direct supervision of the ACAA technical

personnel.

2.2 Process

(a) As the organization has no such flight inspection aircraft, the Civil Aviation Authority of

Afghanistan will perform calibration work through tender for flight inspection services with Local or

international agent of flight inspection unit of participating country/organization having proven

experience for at least 7 (Seven) years of carrying flight calibration in his own country and abroad

and has the fully automatic system with PDGPS (Phase Resolution Differential GPS) installed at

dedicated flight inspection aircraft. In addition, the flight inspection unit must have back up aircraft

with standby system.

(b) The Navigation General Management will prepare schedule of flight inspection in coordination

Director of CNS .

(i) ACAA will carry out flight calibration at least twice a year as per schedule of the work and time.

(ii) The suitable time is January-March and October-December.

(iii) Special flight calibration may be required for commissioning of newly installed equipment or due

to major overhauling, reinstallation of antenna system or change in environment that causes change

in characteristics of signal in space.

(c) Director (CNS) will appoint one Coordinator and one Assistant Coordinator for flight inspection

well prior to a flight calibration work.

(d) The Coordinator will remain responsible and will have further coordination with ATM

Department. He/she will plan, arrange for coordination meetings and coordinate the total progress

of the inspection work. He will coordinate with all the internal and external offices and authorities

related to or may impact on the progress of inspection work. The following offices and authorities

will be given due attention:

(i) Directorate of Inspection and Flight Safety for flight safety related activities regarding inspection

aircraft and flight crews and for flight clearance.

(ii) Directorate of CNS for overall progress of the work.

(iii) Directorate of ATM and Aerodromes for parking and air traffic control services including issuing

of NOTAM.

(iv) ANS/CNS Inspectors for their safety oversight functions.

(v) Fuel Supply Company for fuel supply.

(vi) Border Police commander of each airport for State security clearance and surveillance.



(vii) General Management of Navigation for carrying out the inspection work.

(viii) Station Communication Officer,

(ix) Managers of equipment for VASI and PAPI calibration.

(x) Airport administrations that own and maintain the navigation aids.

(xi) Security sections of airports for providing security to the calibration aircraft.

(xii) Motor Transport sections of ACAA to arrange for transport and vehicles.

(xiii) Meteorological department for weather information.

(xiv) Afghanistan national Airlines for ground support.

(xv) Any other organization and authority as deemed required.

2.3 Flight Check Profiles

The flight check profiles required for calibration for various parameters of navigation facilities should

be submitted by General Management of Navigation as Flight Calibration Report.

Note: The detailed report of Flight Inspection submitted by GMN will be available at the

Directorate of CNS.

2.4 Type of Inspection

(a) As needed the flight inspection unit may be required to undertake any of the following three

types of inspection.

(i) Site Evaluation

(ii) Commissioning

(iii) Periodic/Routine Check

(b) Site Evaluation Inspection: Site Evaluation flight inspections are carried out to determine the

suitability of a site for installation of a Navigation Aid.

(c) Commissioning: Commissioning inspection is a comprehensive check designed to

obtain complete information regarding all aspects of performance of a Navigation Aid. The facility

can’t be declared operational before this check.

(d) Periodic/Routine Inspection: Periodic/Routine inspection is carried out to ensure that Navigation

Aid facility is being maintained within tolerance limits in spite of the inherent drift in the equipment.

Periodic/Routine inspections do not normally involve major adjustments unless the performance is

observed to have drifted either close to, or beyond the applicable tolerance limits.

2.5 The facilities to be flight inspected

The flight inspection will be of periodic/routine/commissioning nature conforming to ANO

(COM) A.1 and ANO (COM) A.4 and ICAO Doc. 8071 (Manual on Testing of Radio Navigation Aids),

and complying with the general and special terms and conditions of the tender document. The

following CNS facilities will be subject to flight calibration:



(i) Instrument Landing System (ILS)

(ii) Doppler VHF Omni range (DVOR)

(iii) Distance Measuring Equipment (DME)

(iv) Non-directional Beacon (NDB)

(v) PAPI and VASI

(vi) Multilateration (MLAT)

(vii) Primary Surveillance Radar (PSR)

(viii) Secondary Surveillance Radar (SSR)

(ix) Wide Area Multilateration (WAM)

(x) Automatic Dependence Surveillance-Broadcast (ADS-B)

(xi) Navigation Aid ground check points on taxiways

(xii) Any new facility that requires flight inspection

2.6 Periodicity of Flight Inspection

(a) Instrument Landing System will be flight inspected and calibrated at least twice a year.

(b) All CNS facilities mentioned in Paragraph 2.5 except ILS will be flight inspected and calibrated at

least once a year.

2.7 Preflight Inspection Preparations

(a) Director (CNS) and GMN will be responsible for preparing schedules and monitoring of

conducting preflight inspections, checks and adjustments of the navigation aids.

(b) Following are the points to be observed during preflight inspection preparation:

(i) Ensure that the result of all possible ground calibration and checking of equipment are

satisfactory.

(ii) Maintenance personnel should be available to make corrections and adjustments during flight

inspection.

(iii) The PDGPS and LT Platform should be constructed, as advised by the GMN, along with suitable

power supply points. Such positions should be maintained properly for subsequent flight checks. The

position of LT reference reflector or its bracket should also be maintained properly.

(iv) Availability of dedicated transport for equipment and personnel should be ensured during the

entire course of flight check.

(v) Ensure all special tools and instruments are available at the site.

(vi) Availability of last Flight Inspection Report.

(vii) Any requirement of special investigation during flight inspection must be

intimated in advance and followed up with GMN during flight inspection.



(viii) In case the facility is not expected to be ready as per the regular scheduled inspection, GMN

must be advised accordingly.

(ix) NOTAM action for withdrawal of facility during flight inspection must be taken without fail in

coordination with local ATC authorities.

2.8 In-Flight Inspection Action by the Ground Personnel

During the inspection, Flight Inspector will advise maintenance personnel of observed conditions

which require adjustment of ground equipment. Request for adjustment will be specific and readily

understandable by ground personnel. Normally the Flight Inspector is not expected to diagnose the

fault, but will furnish sufficient information to enable the maintenance team to make the corrective

adjustment, when the aircraft is airborne. Record the adjustments done, for post analysis. Take

down relevant measurements on ground for establishing a meaningful correlation with the flight

check results after each run.

2.9 Post-Flight Inspection Action by the Ground Personnel

Ground maintenance personnel will complete the following actions:

(i) Take action as per the advice of Flight Inspector.

(ii) Take down relevant measurements on ground for establishing a meaningful correlation with the

flight check results.

(iii) Implement the suggestions contained in the Flight Inspection Report.

(iv) Intimate higher authority regarding any major change in the facility

performance (NOTAM action).

2.10 Corrective Measures on Submission of Flight Inspection Report

(a) Directorate of CNS and GMN will analyze the Flight Inspection Report and prepare a correction

plan without delay and carryout all necessary corrective actions as detailed by the

GMN in the report as soon as reasonably possible. GMN will inform Director (CNS) of the plan and

the actions taken.

(b) The GMN will also prepare a Note of Suggestions, if deemed required, for the next calibration. It

should contain the problems faced in the current inspection work and suitable remedies for future.



CHAPTER 3

TENDER FOR INSPECTION WORK

3.1 Tender Process

(i) The Executive Agency is the ACAA.

(ii) The estimate is prepared by Director (CNS).

(iii) The name of work is flight inspection and calibration of radio and visual navigation aids installed

at different civil airports of Afghanistan.

(iv) The administrative process is related to Chief of Procurement

(v) Estimated cost is approved by the ACAA GDCA.

(vi) The work will be done through open tender or can be added to the TOR of Airspace Control.

3.2 GENERAL TERMS AND CONDITIONS OF TENDER

3.2.1 Introduction

The Afghanistan Civil Aviation Authority (ACAA), here in after referred to as “The ACAA’’ intends

to contract through tender for services of Flight Inspection Unit of participating

Country/Organization /Agents through their local representatives herein after referred to as “FIU’’

for the certification of aeronautical navigation aids located in different civil airports of Afghanistan to

determine if these facilities meet the standards and requirements contained in the Air Navigation

Order ANO (COM) A.1 and ANO (COM) A.4 for safe air navigation by aircraft.

3.2.2 Specification Standards

(a) The flight inspection service shall be conducted in accordance with the procedures described in

ICAO Doc. 8071 (Manual on Testing of Radio Navigation Aids), Air Navigation Order ANO (COM) A.1,

ANO (COM) A.4 and Guidance Materials contained in ICAO Annex 10, Volume I and IV on evaluation

of aeronautical navigation aids.

(b) The FIU should have minimum experience of 7 (seven) years of doing flight calibration in his own

country and abroad. The flight inspection should be carried out with fully automatic system with

PDGPS (Phase Resolution Differential GPS) installed at dedicated flight inspection aircraft. This

service contract can be for each airport or all airport or the specific duration of time. The FIU must

have the backup aircraft with standby system. If for any reason main aircraft cannot be operated

then backup aircraft should be deployed to complete the mission immediately.

(c) The FIU shall consist of crew with sufficient knowledge and experience and shall employ 2-

turbine/jet Engine. Calibration aircraft should be fully equipped and instrumented for night

instrument flights. The FIU must use their own and operated flight calibration aircraft. They must

include in the tender proposal the backup aircraft and system, and the type of ground and airborne

calibration equipment/systems to be used in flight inspection.

(d) Qualification of the flight crew and specification of aircraft will be as per ICAO Standards which

will be checked by CNS Directorate, GMN and Inspection Board of ACAA. Both crew and aircraft will

have to meet the requirements of Flight Safety of ACAA and be approved and cleared by it prior to

commencement of flight inspection work.



3.2.3 Scope and Purpose

The flight inspection of navigational aids shall consist of flight tests to determine if the operational

performance of the facilities meets the standard and requirements of ANO (COM) A.1 and ANO

(COM) A.4 for safe air navigation by aircraft.

3.2.4 Flight Inspection Schedule

(a) The FIU will be required to schedule the flight check of each of the specified navigational facilities

in close consultation with the ACAA. The suitable time for flight inspection in Afghanistan is between

January to March or a suitable time in clear weather so that next calibration will take place

immediately after the contract. During the long term contract, ACAA will send a written notice to the

FIU before three months that they are ready for the calibration. Then the FIU will make the aircraft

available for flight calibration. If FIU fails to make the aircraft available, then ACAA could proceed for

the cancellation of the agreement.

(b) Advance notification of any changes to the flight calibration schedule shall be a responsibility of

each party, that is, the FIU and the ACAA and such changes shall be made by mutual consent only.

3.2.5 General Flight Inspection Procedure

(a) The flight check crew shall be responsible for recording the results of each flight check on

standard formats covering all relevant parameters required to determine facility performance and

certification.

(b) Two designated representative of the Government shall be permitted on board the calibration

aircraft as observer, during any or all phases of the flight inspection mission.

(c) A briefing and debriefing session shall be conducted between the FIU and the representatives of

the ACAA before and just after the flight calibration is completed. In the debriefing session, the FIU

shall analyze and discuss the results and follow-up actions as required. After debriefing and before

leaving Afghanistan, a provisional flight inspection report shall be submitted by the FIU to the

Director (CNS).

(d) Within 30 days following the completion of the flight inspection of all specified facility, the FIU

shall provide a written final report, on the mission, to the ACAA. The report shall provide a record of

the activities and the findings of the mission and include an elaborate technical and operational

analysis on the flight check data. The final report shall contain copies of the chart recordings

obtained during the flight inspection to assist the ACAA in the preparation and maintenance of

station performance histories. The report shall also contain suggestions and recommendations for

corrective actions or for improvements in facility performance as may be appropriate.

(e) Information about the FIU shall have to be furnished along with the tender. Refer to Chapter 4

for details.

3.2.6 Responsibilities of Flight Inspection Unit

(a) The FIU will provide:

(i) Flight inspection aircraft

(ii) Ground and airborne flight calibration equipment/systems,

(iii) Laboratory equipment for ratification of test results of the facilities.



(iv) Necessary portable VHF equipment for air-ground communication during flight calibration.

(v) All other equipment required in flight inspection operations.

(vi) Crew list composed of:

Flight inspection pilot

Flight inspection console operators

Theodolite operator (if necessary)

Aircraft maintenance support technician

2 (two) copies of photograph of each personnel and photocopy of the pages of the passport

containing information of the holder.

(b) The FIU will ensure clearance of over flights during the ferry flights.

(c) Aircraft to follow approved ATS routes while flying from one airport to another in

Afghanistan.

(d) The calibration aircraft must be able to restart its engine in all domestic airports

without ground support and if ground support required the FIU will be responsible for the charges.

(e) The contractor will meet the cost of all international ferry flight.

(f) All costs of subsistence, allowances hotel accommodation and transportation of the crews will be

borne by the contractor.

(g) Ground handling charges (if any) for the flight inspection aircraft will be borne by the contractor.

Landing, parking and navigational charges are exempted.

(h) All costs of the fuel consumed by the inspection aircraft in the flight inspection will be borne by

the contractor and he shall ensure the availability of required quantity of the aircraft fuel.

(i) No fuel facilities will be available at any airport except in Kabul, Herat, Mazare Sharif and

Kandahar.

Hence aircraft fuel tank must be able to store sufficient fuel to return to Kabul, Herat, Mazare Sharif

and Kandahar from other airports.

3.2.7 Responsibilities of the ACAA

(a) The ACAA shall assign the following personnel:

(i) 1 (one) Coordinator and 1 (one) Assistant Coordinator for over all

management of the mission.

(ii) 1 (one) senior navigation aids maintenance engineer for technical cooperation during flight

calibration.

(iii) Technical and support personnel as required for the attainment of the specified tests.



(b) The ACAA will also be responsible for the following provisions:

(i) In-country clearance for aircraft and crew as required for conducting the flight inspection works

under the contract document.

(ii) Preparation and readiness of facilities for flight inspection on scheduled dates.

(iii) Availability of maintenance personnel to monitor and make corrections and adjustments of

ground facilities during inspection.

(iv) Permanent marker aligned with magnetic north or any reference point from the facility antenna

where applicable.

(v) Geographical coordinates of the facility positions, frequencies, identifications and maps covering

the areas to be flown.

(vi) Adequate parking facilities for the aircraft.

(vii) Over flying clearance of flight inspection aircraft near the country’s borders.

(viii) Security of the flight inspection aircraft, equipment and personnel.

3.3 SPECIAL TERMS AND CONDITIONS OF TENDER

(a) The contract may remain in force for a period of time as specific in the contract.

(b) The ACAA will pay the calibration charge on completion of the calibration tasks as

per schedule after receiving the invoice.

(d) Normal Calibration Schedule: The FIU will carry out flight calibration twice a year as

per schedule of the work and time.

(e) The time schedule is generally January-March and October-December.

(f) Special flight calibration may be required for commissioning of newly installed equipment.

(g) Both the parties are allowed to terminate this contract if:

(i) The Contractor fails to fulfill the contract requirement.

(ii) The ACAA fails to fulfill the contract requirement.

(iii) Notice for termination is as per contract terms.

(h) The flight inspection unit must have back up aircraft with standby system.

(i) This service contract will be for specific duration of time as per contract and which may be

extended up to another time duration as per rules.



CHAPTER 4

TECHNICAL SPECIFICATION OF FLIGHT INSPECTION SYSTEM

4.1 Technical Specification of Flight Inspection System (FIS)

(a) Flight Inspection System must be fully automatic and comply with ICAO Doc 8071 requirements.

This automatic flight inspection system must be installed in an Aircraft, which is dedicated for the

flight inspection role and the aircraft specifically modified by the AFIS manufacturer for this purpose

as per applicable airworthiness standards/rules of EASA/FAA.

This TYPE certificate must be provided with the airworthiness of the aircraft.

(b) FIS must have Dual NAV Receivers (VOR/ILS) exclusively used for flight inspection

system and dedicated flight inspection antennas, not shared with primary aircraft equipment.

(c) Flight inspection system must have the PDGPS (Phase Resolution Differential GPS)

to determine a highly accurate position determination system which fully automatically

tracking the aircraft.

(d) Flight Inspection System shall have a spectrum analyzer from measurement o frequency

spectrum of each navigation aid and for interference detection. Spectrum plots must be able to be

printed during flight.

(e) Multimode COMM flights check capability (VHF/UHF) in the FIS.

(f) Built-in / Onboard capability of FIS receiver’s calibration.

(d) SSR/PSR check capability.

(f) RNAV/ GPS procedure check capability.

(h) The Flight Inspector must have valid license for inspecting and calibrating air navigation aids and

Radar.

4.2 Technical Details of Calibration Aircraft:

Aircraft Type and Registration

Aircraft Information

Aircraft Calendar Time Flying Hours Cycles

Date of Manufacture

Life Time

Flight Time Since date of Manufacture

Time Between Overhaul

Flight Time after Overhaul

Date of Last Overhaul



Engine Information - Type & Model

Position # 1 Calendar Time Flying Hours Cycles

Date of Manufacture

Life Time






Date of Manufacture

Life Time





Propeller information (if applicable) - Type & Model


Date of Manufacture

Life Time






Date of Manufacture

Life Time





Date verified TRUE Signature



(Manager, Quality Assurance)

N. B: All the above information shall be supported by valid authentic document. In addition to the

above, following documents / statements are required:

(i) Copy of Certificate of Registration.

(ii) Copy of Certificate of Airworthiness.

(iii) Copy of Insurance Certificate.

(iv) Copy of Radio Station License.

(v) Copy of Air Operator Certificate (AOC).

(vi) Copy of Aircraft Maintenance Organization (AMO) approval.

(vii) Calibration record of all navigation instruments installed in the aircraft.

(viii) A Statement from the 'State of Registry' stating that the aircraft is qualified to carry out

calibration flight in order to calibration navigational aids of airport.

(ix) A statement from the Operator stating that all applicable mandatory modification / inspect and

Airworthiness Directives are complied with within specified period.

4.3 Information Regarding Flight Crew

1. A complete CV indicating the experience and position hold.

2. Type of License.

3. License Number.

4. License Issued by.

5. Total Hours flown.

6. Flying Hours Flown for Calibration Purpose.

7. Validity period of the License.

8. Photocopy of Valid Medical Certificate.

Note: Item Nos. 2 to 7 shall be supported by valid authentic documents.

4.4 Information regarding Flight Inspector

1. A complete CV indicating the experience and position hold.

2. License of Flight Inspector of air navigation aids and radar.

3. License Number.

4. License Issued by.

5. How many flight calibration works are done by him.

7. Validity period of the License.

8. Photocopy of Valid Medical Certificate.



CHAPTER 5

FLIGHT CHECK REPORTS

5.1 A briefing and debriefing session shall be conducted between the FIU and the representatives of

the ACAA before and just after the flight calibration is completed to analyze and discuss the results

and follow-up actions as required. After debriefing a provisional flight inspection report is to be

submitted to the ACAA DGCA.

5.2 Within 30 days following the completion of the flight inspection of all specified facility, the FIU

shall provide a written final report, on the mission, to the ACAA. The report shall provide a record of

the activities and the findings of the mission and include an elaborate technical and operational

analysis on the flight check data. The final report shall contain copies of the chart recordings

obtained during the flight inspection to assist the ACAA in the preparation and maintenance of

station performance histories. The report shall also, contain suggestions and recommendations for

corrective actions or for improvement of facility performance as may be appropriate.



CHAPTER 6

FLIGHT INSPECTION OF ILS LOCALIZER

6.1 Localizer Flight Inspection

(i) Identification

(ii) Modulation Depth

(iii) Displacement Sensitivity

(iv) Off Course Clearance

(v) Course Alignment

(vi) Course Structure / Structure Stability

(vii) Monitors

6.2 Identification Coding Check

Purpose: To ensure Identification code is satisfactory. Identification should have no effect on

Cross Pointer. Identification level is adjusted to 10% Modulation.

6.3 Mod Balance and Mod-Depth Check

Purpose: To confirm that mod balance and mod depth are set properly. On centre line of LLZ

the DDM should be zero and Mod sum should be 40%. Final adjustments of Mod Balance and Mod

depth are carried out during approaches.

6.4 Course Width and Clearance check

Purpose:

(i) To ensure Course Width is satisfactory.

During Commissioning checks the Course width is adjusted for nominal value.

During Routine checks, it is ensured that the course width is within tolerance.

(ii) To check off-course clearance (in the sector 10° - 35° either side of clearance)

6.5 Course Structure Alignment Check

Purpose:

(i) To check the alignment of localizer (radio) center line with the physical runway center line.

(ii) To check that the quality of course signals is satisfactory. Course bends, Roughness, scalloping (all

combined together) should be within tolerance limits of the applicable category.

6.6 Alignment of Monitor Alarm Check

Monitor alarm limits are cross-checked. Ground maintenance personnel actuate alignment

monitor alarm condition with Mod-Balance control. Calibration aircraft detects the deviation



to confirm that the deviation is within the tolerance limits.

6.6.1 Course Width (Displacement Sensitivity) Monitor Alarm Check

Purpose: To confirm that adjustment of Width, Monitor Alarm is Satisfactory.

6.6.2 Coverage & Power Monitor Alarm Check

Purpose: To confirm that Localizer provides coverage to the defined service volume even when

operating at Half Power (Monitor Alarm).

6.7 Polarization Check

Purpose: To confirm that no adverse effect will be encountered while flying on LLZ course due to

undesired vertical polarization component. The desired polarization of LLZ is Horizontal.

6.8 Course Width Symmetry Check

Purpose: To confirm that course width an either side of centre line is symmetrical within prescribed

limit. This check is done only during commissioning. After the flight Inspection is completed the

ground staff should ensure that both the transmitters are balanced on Monitors.



CHAPTER 7

ILS GLIDE PATH FLIGHT INSPECTIONS

7.1 Glide Path Parameters Checks

Following are the various Flight Inspection Checks carried on GP Routine/Periodic check:

(i) Modulation depth

(ii) Angle (a) Alignment displacement (b) Height and Florence

(iii) Modulation Depth

(iv) Displacement Sensitivity

(v) Clearance

(vi) Structure Stability

(vii) Monitors

7.2 Antenna Null Checks

Purpose: To confirm and correct (if required) the height of G/P Antenna elements above ground.

This check is performed during commissioning or after major maintenance of antenna.

7.3 Phasing Check

Purpose: To establish that correct quadrature phase relationship between CSB and SBO

signals exists.

7.3 Glide Angle and Sector Width check

Purpose: To determine the Glide angle, sector width and adjust glide path equipment, if necessary.

7.4 Glide Angle & Path Structure check

Purpose:

(i) To determine the computed (actual) Glide Angle.

(ii) To confirm that the G.P. bends, roughness and scalloping are within tolerance.

7.4 Monitor Checks

7.4.1 Angle Alarm

Purpose: To confirm that the Angle Alarm is adequately sensitive to detect a change of Glide

Angle. This check is carried out using one transmitter only.

7.4.2 Width Alarm

Purpose: To confirm that width alarm is adequately sensitive to detect an out-of tolerance change in

sector width value.

7.5 Azimuth Coverage



Purpose: To confirm that usable signal is available in the ± 8° azimuth zone (With the extended

center line as the reference).

This check is carried out only during commissioning or after major maintenance of the

antenna.

CHAPTER 8

VOR FLIGHT INSPECTION

8.1 VOR Parameters Checks

Following are the various Flight Inspection Checks carried on DVOR Routine / Periodic check /

Commissioning

(i) Identification

(ii) Sensing / Rotation

(iii) Course Sensitivity

(iv) Standby equipment

(v) Orbit

(vi) Coverage

(vii) Ref Radial / Check point

(viii) Monitors

(ix) Radials as mentioned

8.2 Identification check

Identification check is carried out to see the correctness, clarity and to ensure that there is no

adverse effect on VOR course structure. This check is performed anytime while flying a radial.

8.3 Sensing and rotation

(a) The purpose of this check is to assure proper orientation of the antenna; Proper connection of its

RF feed lines. Course azimuth increases in a clockwise direction and ‘TOFROM’ indications are

correct.

(b) Flight Inspection aircraft flies any outbound radial to check sensing. After sensing is checked,

Orbit check starts.

(c) If it is found to be incorrect, the most probable cause would be reversed sideband antenna feed

cables.

8.4 Modulation Levels Check

Purpose: To confirm that modulation levels of 30 Hz AM, 9960 Hz Sub-carrier and the 30 Hz

FM (deviation ratio of 9960 Hz sub-carrier) are set properly. 8.5 Orbit Checks

8.5.1 5 NM Orbit



Purpose: This check is carried out during Commissioning and routine flight checks.

(i) To evaluate the error in azimuth alignment, the roughness and scalloping of sectors and the signal

strength over the orbit.

(ii) To determine the accuracy and overall alignment error distribution of the radials over 360

degrees.

8.5.2 25 NM Orbit check

Purpose: This check is carried out only during Commissioning.

(i) To evaluate Bends, roughness, scalloping and signal strength.

(ii) To establish Ground check points.

8.6 Radial Checks

Purpose:

(i) To check that the quality of course signals is satisfactory. Course bends, roughness, scalloping (all

combined together) should be within tolerance limits

(ii) Minimum 8 radials with at least one radial in each quadrant including ATS routs are checked

during commissioning. During Routine inspections, only ATS routes are checked.

8.7 Polarization Check

Purpose: To confirm, that no adverse effect will be encountered, while flying on course due to

undesired vertical polarization component. The desired polarization of VOR is horizontal.

8.8 Coverage Check

Purpose: To confirm that VOR provides coverage to the defined service volume even when

operating on standby power supply.

8.9 Bearing Monitor Alarm Check

(a) Monitor alarm limits are cross checked. Ground maintenance personnel actuate alignment

monitor alarm condition with North Alignment Control. Calibration aircraft detects the deviation to

confirm that the deviation is within the tolerance limits.

(b) Calibration A/C flies on any radial either inbound or outbound. Give the equipment on alarm with

north alignment control when advised by flight inspector. Normalize the equipment after Alarm

check.



CHAPTER 9

FLIGHT INSPECTION OF DME & NDB

9.1 DME Parameters Checks

(i) Identification

(ii) Coverage

(iii) Accuracy


9.2 DME Flight Inspection

All DME Checks are carried out in conjunction with checks on their associated facilities

(VOR & ILS).

9.2.1 Identification

The identification code should be clear and correct through out the area of coverage. The ID

should be properly synchronized with that of the associated facility.

9.2.2 Coverage

The area of coverage of the DME will be at least that of its associated facility (VOR & ILS)

9.2.3 Distance accuracy

The indicated Slant range distance must be within the limits

9.2.4 Signal Strength (AGC)

The signal strength must be at least –82 dBm throughout the area of coverage.

9.2.5 False replies

No false replies should be present which could result in false locks-ons within the area of coverage.

This may occur at any location especially in the presence of vertical nulls.

9.3 NDB Parameters Checks

(i) Identification

(ii) Carrier frequency

(iii) Coverage


9.4 NDB Flight Inspection

9.4.1 Identification

The identification code should be clear and correct throughout the area of coverage. If voice is

installed, it should be readable to at least two thirds of the rated usable distance.

9.4.2 Coverage



Minimum coverage for the various classes of facilities

9.4.3 Needle Oscillations

Needle oscillations will not exceed ± 10 degrees to the maximum usable distance published for the

facility.

9.4.4 Approach and Holding

Needle oscillations will not exceed ± 5 degree throughout the approach or holding procedure.

CHAPTER 10

VASI/PAPI CALIBRATION

10.1 VASI/PAPI Flight Inspection

Following flight Inspection checks are carried out on the PAPI/VASI equipment.

(i) Light intensity/ Color Transition check

(ii) Visual Glide Path Angle / Azimuth coverage check

(iii) Angular coverage / Approach angle check

(iv) Obstacle clearance

10.2 Color Transition Check

Purpose: To confirm that the elements of the PAPI/VASI system are properly aligned and the

color change is smooth.

10.3 Approach Angle Check

Purpose: To determine the approach slope and adjustment of the angle if required.

10.4 Azimuth Coverage Check

Purpose: To verify that azimuth coverage is adequate.

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