August 29, 2001

TO: Recipients of 250–C18, –C20, –C28, –C30, –C20R, –B15, –B17 and–B17F Commercial Engine Bulletins

SUBJECT: ENGINE, FUEL AND CONTROL – HONEYWELL FUEL CONTROL UNITAND TURBINE GOVERNOR – INTERNAL SPRING REPLACEMENT.

This letter transmits Revision 2 to the subject commercial engine bulletins:Model Bulletin Number

250–C18 Series CEB A–300250–C20 Series CEB A–1361250–C28 Series CEB A–73–2069250–C30 Series CEB A–73–3102250–C20R Series CEB A–73–4045250–B15 Series TPCEB A–172250–B17 Series TPCEB A–1312250–B17F Series TPCEB A–73–2027

This is a complete revision. Replace the Revision 1 with this Revision 2.

Revision 2 adds updated vendor bulletin.

If you have complied with the previous issue of this bulletin, no additional work is required.

The following list includes the original issue date and all revisions to this bulletin:

Original issue October 5, 1998Revision 1 March 15, 1998Revision 2 August 29, 2001

CUSTOMER SUPPORTROLLS-ROYCE

Rolls-Royce CorporationP.O. BOX 420Indianapolis, IN 46216 USAPhone: 317–230–6400Fax: 317–230–6084

CHECK THAT ALL PREVIOUS TRANSMITTALS HAVE BEEN INCORPORATED– if any have not been received please contact Aviall, Inc.via E–mail: 250pubs@aviall.com, Website: www.availl.com, Phone: 1–800–AVIALL–1 (North America), 1–972–586–1985 (International).

P U B L I C A T I O N T R A N S M I T T A L

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Page 1 of 27

October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

ENGINE, FUEL AND CONTROL – HONEYWELL FUEL CONTROL UNITAND POWER TURBINE GOVERNOR – INTERNAL SPRING

REPLACEMENT

1. PLANNING INFORMATION:

A. Effectivity

All Rolls-Royce Model 250–C18, –C20, –C28, –C30 (including –C30R and –C30R/1), –C20R ,–B15, –B17 and –B17F Series engines are affected by this Bulletin.

B. Reason

Some Honeywell Fuel Control Unit (FCU)/Main Fuel Control (MFC) and Power TurbineGovernor (PTG) Assemblies, new or overhauled since June or September 1996 (seeCompliance section for details), may contain springs that have manufacturing damage thatwill, if spring failure occurs, result in an immediate engine deceleration.

C. Description

This Bulletin transmits Honeywell Service Bulletin No. GT–298 and replaces the Fuel ControlAssembly and Power Turbine Governor Assembly with modified assemblies identified with an“H” in the LI block on the data tag or an “H” after the serial number for U.S. Military units.

D. Approval

Technical aspects are FAA approved.

E. Compliance

Compliance Code 1: All Honeywell Fuel Control Units (FCU) and Power TurbineGovernors (PTG) for the 250–C18 and –B15 (Series I) or 250–C20,–C20R, –B17 and –B17F (Series II), new, repaired or overhauledsince June 1,1996, and 250–C28 (Series III) or 250–C30 (including–C30R and –C30R/1) (Series IV), new, repaired or overhauled sinceSeptember 1, 1996 and not installed, must be complied with before further flight.

Compliance Code 2: 250 Series I and II FCUs, overhauled, repaired or new since June 1, 1996 and installed on single engine applications, must be compliedwith within the next 150 operating hours following receipt of thisbulletin, but in no case later than October 31, 1999.

Compliance Code 2: 250 Series III and IV (including 250–C30R and –C30R/1) FCUsoverhauled, repaired or new since September 1, 1996 and installed or single engine applications, must be complied with within the next 300operating hours following receipt of this bulletin, but in no case laterthan October 31, 1999.

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Page 2 of 27

October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

Compliance Code 3: 250 Series Honeywell FCUs, new, repaired or overhauled since June 1, 1996 for 250 Series I and II engines or since September 1, 1996 for 250 Series III and IV engines and installed on multi–engineapplications, must be complied with the next time the component issent to an authorized fuel system repair/overhaul facility for anyreason.

Compliance Code 3: 250 Series Honeywell PTGs, new, repaired or overhauled since June1, 1996 and installed on any 250 Series engine, must be complied withthe next time the component is sent to an authorized fuel systemrepair/overhaul facility for any reason.

NOTE: The fuel control system component manufacturer, Honeywell, determined theabove stated compliance schedule. Inquiries as to the administration, supportor compliance with this Bulletin must be directed to Honeywell CustomerSupport, South Bend, Indiana; Phone: (219) 231–4067; FAX: (219) 231–4016or (219) 231–4072.

NOTE: To make sure of minimal adverse affect on scheduled operation, operators shouldcoordinate with an authorized Honeywell facility (see the list of designated facilitieson pages 6 and 7), or an otherwise approved facility, to coincide with the nextscheduled maintenance interval.

NOTE: Any FCU or PTG returned to a facility for compliance with this CEB must note anyoperational deficiencies to the facility when scheduling, and boldly note the operatingproblem on documents provided with the unit sent for bulletin compliance. A fullevaluation of the subject unit will not be made as part of this campaign unlessoperational problems are stated by the operator.

F. Interchangeability – Not affected.

G. Material Availability

All 250 Series FCUs and PTGs manufactured by Honeywell of any part numberedconfiguration which were new, repaired or overhauled in the time frame stated in theCompliance Section (paragraph 1.E.) of this CEB are affected.

H. Tooling – Not applicable.

I. Weight and Balance – Not affected.

J. Electrical Load Data – Not affected.

K. References

(1) 5W2 Operation and Maintenance Manual, Turboshaft Models 250–C18A, –C18B, –C18C(OMM).

(2) 5W4 Illustrated Parts Catalog, Turboshaft Models 250–C18A, –C18B, –C18C (IPC).

(3) 10W2 Operation and Maintenance Manual, Turboshaft Models 250–C20, –C20B, –C20F,–C20J (OMM).

(4) 10W2S Operation and Maintenance Manual, Turboshaft Model 250–C20S (OMM).

(5) 10W4 Illustrated Parts Catalog, Turboshaft Models 250–C20, –C20B, –C20F, –C20J(IPC).

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Page 3 of 27

October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

(6) 10W4S Illustrated Parts Catalog, Turboshaft Model 250–C20S (IPC).

(7) 16W2 Operation and Maintenance Manual, Turboshaft Models 250–C28B, –C28C(OMM).

(8) 16W4 Illustrated Parts Catalog, Turboshaft Models 250–C28B, –C28C (IPC).

(9) 14W2 Operation and Maintenance Manual, Turboshaft Model 250–C30, –C30S, –C30G,–C30G/2, –C30P, –C30M (OMM).

(10) 14W2L, R, U Operation and Maintenance Manual, Turboshaft Models 250–C30L, –C30R,–C30R/1, –C30U (OMM).

(11) 14W4 Illustrated Parts Catalog, Turboshaft Models 250–C30, C30P, C30M, –C30S,–C30G, –C30G/2 (IPC).

(12) 14W4R,U Illustrated Parts Catalog, Turboshaft Models 250–C30R, –C30R/1, –C30U(IPC).

(13) CSP 21003 Operation and Maintenance Manual, Turboshaft 250–C30R/3 (OMM).

(14) CSP 23003 Illustrated Parts Catalog, Turboshaft Model 250–C30R/3 (IPC).

(15) GTP 5232–2 Operation and Maintenance Manual, Turboshaft Models 250–C20R,C20R/1, C20R/2 and C20R/4 (OMM).

(16) GTP 5232–4 Illustrated Parts Catalog, Turboshaft Models 250–C20R, –C20R/1,–C20R/2, –C20R/4 (IPC).

(17) 6W2 Operation and Maintenance Manual, Turboprop Model 250–B15G (OMM).

(18) 6W4 Illustrated Parts Catalog, Turboprop Model 250–B15G (IPC).

(19) 11W2 Operation and Maintenance Manual, Turboprop Models 250–B17, –B17B, –B17C,–B17D, –B17E (OMM).

(20) 11W4 Illustrated Parts Catalog, Turboprop Models 250–B17, –B17B, –B17C, –B17D,–B17E (IPC).

(21) GTP 5243–2 Operation and Maintenance Manual, Turboprop Models 250–B17F,–B17F/1, –B17F/2 (OMM).

(22) GTP 5243–4 Illustrated Parts Catalog, Turboprop Models 250–B17F, –B17F/1, –B17F/2(IPC).

L. Other Publications Affected – None.

M. Prerequisites – None.

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October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

2. ACCOMPLISHMENT INSTRUCTIONS:

A. Replace the Fuel Control Assembly.

(1) Remove the fuel control assembly from the gearbox and send it to a Honeywellauthorized maintenance facility for replacement of governor and speed bias springs (RefOMM).

(2) Install a modified fuel control assembly (same part number as the one removed, butidentified with an “H” in the LI block on the data tag) on the gearbox (Ref. OMM) (REF:Paragraph 1.H.)

NOTE: Install seals and caps before shipping (Ref. OMM, O/H).

NOTE: Refer to Figures 1 and 2 for fittings NOT to be removed. Some airframemanufacturers utilize FCU lever arms of their own manufacture. Refer to airframemanuals for these applications. Retain airframe unique items and advise the fuelsystem facility not to supply replacement items.

NOTE: To make sure of speedy processing of affected units, include Time Since New/TimeSince Overhauled and other service history.

NOTE: Some fuel control assemblies and power turbine governor assemblies containsprings inspected to the FAA approved criteria prior to the issuance of this CEB.These units are identified with the letter “H” in the LI block of the fuel controlassembly or power turbine governor Assembly data tag and already meet the criteriaof this CEB, but will not show compliance with this CEB in the log cards. Theseunits identified with the letter “H” may continue in service. Make the proper log entryper paragraph C below.

NOTE: FCUs will be returned with all field settings to nominal position (the same as a newor overhauled unit). correct settings and adjustments (Ref. OMM, O/H).

B. Replace the Power Turbine Governor Assembly.

(1) Remove the power turbine governor assembly from the gearbox and send it to aRolls-Royce authorized maintenance facility for replacement of the governor springs (Ref.OMM).

NOTE: Install seals and caps before shipping (Ref. OMM, O/H).

NOTE: Refer to Figures 1 and 2 for fittings NOT to be removed. Some airframemanufacturers utilize FCU lever arms of their own manufacture. Refer to airframemanuals for these applications. Retain airframe unique items and advise the fuelsystem facility not to supply replacement items.

NOTE: To make sure of speedy processing of affected units, include Time Since New/TimeSince Overhauled and other service history.

(2) Install a modified power turbine governor assembly (same part number as the oneremoved but identified with an “H” in the LI block on the data tag) on the gearbox (Ref.OMM, O/H) (Ref. Paragraph 1.H.)

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Page 5 of 27

October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

NOTE: Some fuel control assemblies and power turbine governor assemblies containsprings inspected to the FAA approved criteria prior to the issuance of this CEB.These units are identified with the letter “H” in the LI block of the Fuel ControlAssembly or Power Turbine Governor Assembly data tag and already meet thecriteria of this CEB, but will not show compliance with this CEB in the log cards.These units identified with the letter “H” may continue in service. Make the properlog entry per paragraph C below.

C. Record compliance in the Engine Log Book, Engine Assembly (white pages) and AccessoryAssembly (Beige pages), Part III, Modification Record, as applicable with the following:

250–C18 Series CEB A–300250–C20 Series CEB A–1361250–C28 Series CEB A–73–2069250–C30 Series CEB A–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027.

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October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

AUTHORIZED HONEYWELL FACILITIES

North America Contact NameTelephone

NumberFacsimileNumber

PHI – Louisiana Bob Gautreaux/Wayne Dore (318) 272–4200 (318) 235–3424

Airwork (Miami) – Florida Weldin Walshe/Larry Steinberg

(305) 592–3040 (305) 591–7342

Precision Air – Florida Gary Fitzgerald (305) 635–5293 (305) 635–1572

Dallas Airmotive – Texas Tom Hall/Rick Given (214) 956–3040 (214) 956–3035

Honeywell West Coast –California

Dennis Dryden (818) 556–5322 (818) 845–6068

National Airmotive – California Tony Amato/Gary Lewis (510) 613–1923 (510) 635–2250

Honeywell – South Bend,Indiana

Tom Richards (219) 231–3339 (219) 231–3383

Honeywell – North Carolina Bob Cadman (252) 972–6266 (252) 972–6660

Standard Aero – Central Canada

Rod Boresky/Brent Swail (204) 788–2622 (204) 885–2229

ACRO – West Canada Jack Gardner/Mike Lajeunesse

(604) 276–7564 (604) 276–7513

South America

Helli–Taxi – Columbia Steve Early 571–547–2414 571–414–8659

MRR – Brazil Paul Renato/Victor M.V. Silva 55–11–759–7722 55–11–759–8071

Siper – Argentina Eduardo Daniel Siri 541–746–7600 541–746–1963

South Africa

Greystones Peter Griggs/Digby Mouritzen 27–31–526544 27–31–5692630

Asia

Standard Aero – Singapore Raymond Ng 65–540–8426 65–542–8480

Australia

Masling – Cootamundra John Hill 61–2–6942–3155 61–2–6942–3250

Pacific Turbines – Sidney Andrew Pye/Warwick Patsky 61–2–9772–8499 61–2–9772–8155

Lucas – Sidney Ian McGuiness/Laurie Lee 61–2–9313–3700 61–2–9313–7676

Europe Contact NameTelephone

NumberFacsimileNumber

SECA – France Guy Barron/R. Gillet 33–149–34–53–33 31–149–34–5494

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October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

PLU – Germany Ewald Shultz 49–2131–953–362 49–2131–953–325

H & S England Dave Williams 44–1705–304086 44–1705–304080

CSE – England Peter Tervit 44–1865–841234 44–1865–379123

Volvo Henry Edin 46–5–209–8919 46–5–209–8528

Agusta (EMF) – Italy Battista Cattaneo 39–775–205324 39–775–290014

AeroMaritime – Malta Doug Hooper 35–65–1778 35–6–65–1782

ITP – Spain Femando Maroto 34–91–384–8000 34–91–384–8002

AIRWORTHINESS AUTHORITY APPROVED FACILITIES

North America Contact NameTelephone

NumberFacsimileNumber

Air Logistics – Louisiana Paul Mouisset (318) 365–6771 (318) 364–8222

Heros – California Zaven Sevoian/Heros Kajberohni

(909) 687–4287 (909) 687–4588

Precision Airmotive –Washington

Chuck Maddox/Dave Owen (425) 353–8181 (425) 353–9431

Premier Turbines – Kansas Janie Linden/John Heathman (316) 331–8180 (316) 331–6426

Asia

Air Asia – Taiwan C.S. Lin/P. K. Shung 886–6–268–1911 886–6–267–3424

MHI – Japan Fumio Yoshii 81–568–79–2117 81–56–879–0644

IHI – Japan Yukio Ando 81–42–568–7268 81–42–568–7258

Samsung – Korea Seungdae Seo 82–551–260–2453 82–551–60–2350

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Page 8 of 27

October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

Typical Series II FCU and PTG Fittings NOT to be Removed (Indicated with an Arrow)Figure 1

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Page 9 of 27

October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

Typical Series IV FCU and PTG Fittings NOT to be Removed (Indicated with an Arrow)Figure 2

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Page 10 of 27

October 5, 1998

Revision 2

August 29, 2001

250–C18 Series CEBA–300250–C20 Series CEBA–1361250–C28 Series CEBA–73–2069250–C30 Series CEBA–73–3102250–C20R Series CEB A–73–4045250–B15 Series TP CEB A–172250–B17 Series TP CEB A–1312250–B17F Series TP CEB A–73–2027

3. MATERIAL INFORMATION:

All 250 Series FCUs and PTGs manufactured by Honeywell of any part numbered configurationwhich were new, repaired or overhauled in the time frame stated in the Compliance Section(paragraph 1.E.) of this CEB are affected.

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