supplier quality education - cessna

Company Confidential 1

Supplier Quality Education

Quality Insight to Cessna's System


Agenda

Purchase Order

Understanding part numbers

Outside Production Specification Sheet (OPSS)

Drawings

Manufacturing Bill of Materials (MBOM)

Specification Drawings (Supplier Controlled Dwgs)

www.supplier.cessna.com

http://www.supplier.cessna.com/


Purchase Order (PO)

What you need from the PO

PO number

Date issued

Version (Rev level)

Part number

Part Description

Engineering documents and Rev levels

Quality Notes

Extra quality requirements added on the PO

Listed at www.supplier.cessna.com

History page



Engineering

documents, rev

levels and

quality notes

Part number

Note:There will

be a new line

item for each

part number.

Qty ordered and

Price

PO #, Date,

Revision

Purchase

order

Yellow items are

Critical to

Quality

Part description

Change history

Buyer contact

info

Delivery dates


Questions


Cessna Part Numbers

What you need to know about part numbers

Format

Manufacturing numbers

Dash numbers and definitions

600, 700, 800

Examples

Double dash numbers and definitions

Less than engineering assembly

Less than engineering detail


X X X X X X X - X

BASE #

Model

Aircraft major sub Section

Sequential Drawing #

per aircraft section

Dash # Detail or assy

drawing

Understanding Part Numbers

The dash numbers represented on an engineering

drawing are tied to the specific detail, assembly or

installation.

Number Format


Cessna Manufacturing Numbers

600 Numbers This is used when engineering has used the same part in different

places but manufacturing requires different configuration. Exp: same part different hole patterns or mirror image.

700 Numbers A 700 number is used when a portion of the work is done at Cessna and

a portion is done at a supplier. Exp: 1) Cessna procures a partially completed part and then completes the

required processes to conform to the engineering number.

Exp: 2) Cessna completes a portion of a part and sends it to a supplier to be completed.

800 Numbers It is used when manufacturing engineering creates a part or assembly

that has more components than the engineering defined assembly or installation. Exp: An engine beam with added anchors.

Examples Part number or assembly with a -13 would become:

-613 or -713 or -813

Part number or assembly with a -3 would become:

-603 or -703 or -803


Cessna Manufacturing Numbers

Double Dash Numbers Manufacturing will assign a double dash to an assembly or detail that is missing

parts or operations for ease of the next higher assembly.

The double dash could just be the next revision to the 600, 700 ,800 number.

Note: this is the opposite of a 800 number which has extra components.

Less than engineering assembly

Manufacturing will assign a double dash number to an assembly that is, for installation purposes, missing components of the engineering.

Exp: Engine beam missing a stiffener for ease of installation.

Less than engineering detail

When the Manufacturing Engineer determines that an engineering defined feature should be omitted from the detail and added at a later time.

Exp: Machined bracket missing a hole that will be drilled on next higher assembly.

Manufacturing Engineers starts with the number -X -1 and as more changes happen the numbers increase.

Example: engineering number -X-1 will change to -X-2.

Manufacturing numbers can be combined.

Example: -803 can become -803-1.

• Note these changes are not deviations from the drawing but alterations in the manufacturing sequence to ease the overall process.


Example 6922321-4

69 = Sovereign

22 = Outboard Wing

321 = Sequential DWG for outboard wing

-4 = Sequential dash # for ENG DWG 6922321

Example 6922321-804

69 = Sovereign

22 = Outboard Wing


-804 = (4) is sequential dash # for ENG DWG 6922321, (804) plus extra components not on the (-4) dwg

Example 6922321-804-1

69 = Sovereign

22 = Outboard Wing


-804-1 = (4) is sequential dash # for ENG DWG 6922321, (804) plus extra components not on the (-4) dwg

(1) minus components on the (-4) dwg

Cessna Part Number Format and dash numbers


Cessna Part Number Format and dash numbers

Example 7112053-603

71 = CJ 4

12 = Aft Fuselage

053 = Sequential DWG for aft fuselage

-603 = (3) sequential dash # for ENG DWG 7112053

(603) same as the -3 except different hole pattern or mirror

image.

Example 7112053-703

71 = CJ 4

12 = Aft Fuselage

053 = Sequential DWG for aft fuselage

-703 = (3) sequential dash # for ENG DWG 7112053

(703) is the -3 made by Cessna but sent to an outside vendor

for heat treat, alodine and paint then is returned to

Cessna as a 7112053-3


Questions



What you need from the OPSS

Part number

Part Name and Revision date

Part number definition

List of drawings/part list and revision levels

MBOM

Note: MBOMs will only come with assemblies. If the assembly has less then 50 details the MBOM will be in the OPSS, if there are 50 or more details a separate MBOM will be provided.

Manufacturing information and exceptions or additions to engineering

Drawing, Specifications and Tooling list

List of tools

Required tools

Reference tools

See www.supplier.cessna.com for tool definitions

Change History




Things to remember about the OPSS:

The example is the newest version of an OPSS, there are older

formats but the content should be the same.

MBOMs for assemblies with less than 50 parts are on the OPSS,

more than 50 parts will have a separate MBOM.

All of the required specs may NOT be listed.

CSPS004 incorporates or makes references to specs that are

not listed.

If any of this information is missing from the OPSS or you do not

understand something that is on your OPSS please contact the

Buyer or Quality Engineer.


Outside Production

Specification Sheet

(OPSS)

Part # Part Name

OPSS Rev

Date

Defines

manufacturing

part number

List of drawings

& Parts list w/rev

levels

MBOM

OPSS Print date

NOT REV DATE


Outside Production

Specification Sheet

(OPSS)

Manufacturing,

additions &

exceptions

information

Dwg, Specs,

Tool listing

CSPS

incorporates/

references specs

that may not

listed


Outside Production

Specification Sheet

(OPSS)

Dwg, Specs,

Tool listing

Change

History

NOTE: ALL required specs may not be listed, it is the

suppliers responsibility to make sure all requirements

are complied with.


Specifications (specs) ALL required specs may NOT be listed on the OPSS.

CSPS004 incorporates or makes reference to specs that are not listed.

Specs will also be listed on drawings, in flag notes and parts list.

Specs will also be imbedded in other specs.

NOTE: It is supplier’s responsibility to make sure all requirements are met.

Special Processes Some specs are considered special processes and require special

approvals.

Specs, special processes and approved special processors are listed on www.supplier.cessna.com.

NOTE: Extensive research may be needed to make sure all specs and special processes are complied with. Contact your Cessna Buyer or Quality Engineer with any questions.

WARNING



Questions


Drawings (Current, Old, Ancient)

Things you need to know about Cessna drawings: Current drawing format has:

Title blocks on Drawing face

Separate Title page

Separate Drawing notes and Revision page

Separate Release sheet page

Parts list

“Previous” drawing format

Title block on drawing face

Revision block on drawing face

Drawing notes on drawing face

Parts list

“Ancient” drawing format

It’s on the front page

DDA’s and DCN’s

Drawing Departure Authorization (DDA)

Drawing Change Notification (DCN)


Current Drawing Format

There is a dedicated Title page Provides basic information for:

Drawing number

Drawing revision level

Tolerance data

Basic fastener code information

Ref. to General Cessna Spec’s that apply to the entire drawing

There is a dedicated Drawing Notes and Revision page Provides:

Drawing notes

Revision details

Release sheet Provides revision levels for installations, assemblies and details

within the drawing.

Parts list Which also has notes.

Drawing face



Tolerance data

Basic fastener code

information

General Cessna Spec’s

Drawing & revision

level

Title Page



Drawing notes or Flag notes

The notes without brackets

<> are general notes that

effect the whole dwg, the

notes with brackets are

specific to details or

assemblies within the dwg.

Revision details

Drawing notes / Revision page

Drawing & revision

level


Current Drawing Format Release Sheet

Assembly,

installation

or detail #

Rev level

Drawing &revision

level

Notice Rev.

levels do not all

match.


Flag Notes


Example of Drawing notes


Finish Codes

Per CSFS001

Parts list notes


PL # / Rev

Parts List



Typical Info

Exp of PL

note



Assembly #

Details

Detail

Info.

Assembly

parts list rev

level


Face of Drawing (Bottom R/H corner)


Drawing #

Installation, assembly or detail dash #

Title Block

Installation, assembly or detail rev level


NOTE: Every Installation, assembly or detail will

have four revision levels that you will need to

know.

1. Base drawing rev

2. Installation, assembly or detail dash number rev

3. Base parts list rev

4. Installation, assembly or detail dash number parts list

rev

They may or may not be at the same rev levels.



“Previous” Drawing Format

The same information outlined in the “current” format is provided in the “previous” format except the information may be found in a different location.

The Title Block is on the face of the drawing in the lower R/H corner and will contain:

Fastener codes

Tolerance

Some spec reference

Revision details and Drawing Notes are on the face of the drawing in the upper R/H corner.

Note: If there are too many changes/notes to fit in this area, they will be continued on another sheet.

The Parts List is the same as the current format.


“Previous” Drawing Format

Drawing

Notes

Drawing Rev’s

Title Block


Similar to other formats except EVERYTHING is on the face of the drawing, including the parts list. Some of the Ancient drawings have been updated with a separate Parts List.

There are NO models. Ref. may be to the “Plaster Master” for loft contour.

Some amount of reverse engineering might be needed. Plaster Masters may no longer exist.

These are almost always for out of production “Spares” only type parts and assemblies with limited quantities needed.

Expect that some standards and specs called out on these drawings may be obsolete and/or superseded and need to be converted to current data. You may need to contact Cessna for help with translating old obsolete or inactive Cessna material and finish codes.

“Ancient” Drawing Format


“Ancient” Drawing Format

If there are questionable dimensions, be sure to

contact Buyer or QE as well. We can enlarge and

read the microfiche or compare with dimensions on

related parts or assemblies to confirm where poor

legibility of the old drawing leaves you guessing.

Some of these drawings are from the 40’s and

early 50’s with dimensions still given in fractions.


Drawing Departure Authorizations (DDA’s)

Used to change conformity away from the original design.

Used when the change is needed immediately prior to having the drawing revised to the new configuration.

To use old configuration parts when needed.

All DDA’s must have both start and ending aircraft serial numbers.

The DDA number will replace the original engineering part number.

Parts with DDA definition are to be submitted using Form X-126

Drawing Change Notification (DCN)

DCN’s are additional pages that follow the original drawing to show changes made to the design, processing, or finish.

When researching or reviewing drawings be sure to look at all DCN’s to ensure current configuration.

Check the Rev. block in the upper right corner.

If DCN’s are serialized into the model line, there will be a p/n change.

If the DCN was only to clarify a dimension or finish, the p/n will not change.

DDA’s and DCNs


MBOM

Manufacturing Bill Of Materials MBOMs will list all detail parts that feed an assembly.

Example:

Top level assembly Details

Subassemblies Details that feed subassembly

Hardware Nuts and bolts

Screws

Nutplates

Pull fasteners

Hi-locks and collars

Note: Some common fasteners will not be listed such as: BJ, BB, XLZ

MBOMs for assemblies with less than 50 details:

The OPSS will have a description of all details or

The MBOM will be imbedded in the OPSS

MBOMs for assemblies with more than 50 details:

The MBOM will be a separate document


Questions


Specification Drawing (Supplier Controlled Dwg)

Definition - A drawing that defines the minimum requirements for

components (outputs / performance parameters) designed and supplied

by a source external to the Cessna Aircraft Company.

Purpose - May be used to define components that are similar to

existing parts but require specific part changes, design controls, or tests

in order to meet Cessna requirements.

Uses - May be used to define parts that are complex mechanical,

electronic, hydraulic or just a single component.

Control - Latest revision of Manufacturer’s Part Number (MPN- this is

the suppliers drawing number) drawing in use must be approved and

on file at Cessna. The latest revision will be listed on the PO under the

specific line item.

See example on next slide.



Part/Drawing Number –

Cessna defined part/drawing number will start with a 99 prefix. (Example:

99XXXXX-X)

Supplier defined part/drawing number will be unique to the particular

supplier and will be captured/controlled on the PO under Manufacturer Part

Number (MPN) and MPN Drawing fields.

Cessna

numbers

MPN

numbers



Cessna Quality Note 9 –

Federal regulations require that the airplane type

certificate holder approve all changes to the type

design of components installed on their aircraft. Supplier

shall not make any configuration changes to the

articles defined on this purchase order or ship any parts

not meeting the drawing definition on this P.O., without

the written consent of Cessna engineering and/or

purchasing. Notification and approval of configuration

changes include those parts which are superseded by

another part.

Cessna engineering must approve, in

writing, ANY changes made to a supplier

controlled drawing PRIOR to shipment,

although drawings are still controlled by

supplier.


Questions


This website is full of information.

STARS quality rating

Details for rejections

PPM reports

CEDARS

P.O. Quality Notes

CQRS requirements

OPSS guidelines

Special process suppliers

Cessna quality contacts

Materials and process specifications

Cessna standard drawings

Supplier tooling

QN reversals

Submit SRDR

And much more!!

WWW.SUPPLIER.CESSNA.COM

The big arrows point

out where to find

these bullets on the

following slides.


WWW.CESSNA.SUPPLIER.COM

Click on

“Quality” for

PPM

information.

Click on “Quality Detail”

for QN numbers and

discrepancies.

CEDARS


Supplier Website Updates

New box on the home screen

Vendor approval status

Vendor Quality Contact

Cessna Lead QE

SRDR Form

The new form will have added check boxes for:

Cessna Responsibility

Repetitive

OPSS issue

Drawing issue

Specification issue

Segregated Discrepancy boxes

One discrepancy / One disposition per box




Coming

Soon


Questions


Closing

This is how Cessna delivers information to

suppliers. If any of the information is not provided

or does not make sense ask questions. Cessna

wants to be a good customer and will provide you

the assistance needed to produce quality parts.

Be sure to go out to the supplier website to review

the changes we have made to the SRDR segment.

We will be better able to assist you with needed

changes.

Also see the site for the revised CQRS. Now at

revision M.

supplier quality education - cessna

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