Honeywell International Inc.

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SERVICE BULLETIN

ENGINE - TURBINE SECTION - Replace Specific Identified Low Pressure Second Stage Turbine (LPT2)

Rotor Blades, PN 3075424-2, -3

Legal Notice

NOTICE: This is a CATEGORY 1, SAFETY service bulletin.

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SERVICE BULLETIN

TFE731

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WARNING: HONEYWELL ASSUMES NO RESPONSIBILITY FOR ANY HONEYWELL EQUIPMENT

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WARNING: INCORRECTLY REPAIRED COMPONENTS CAN AFFECT AIRWORTHINESS OR DECREASE

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RESULTS.

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Copyright 2010 Honeywell International Inc. All rights reserved.

Honeywell is a registered trademark of Honeywell International Inc.

All other marks are owned by their respective companies.

THIS IS THE SB FOSI - DATE: 20080902, VERSION 0017A (HT)

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Transmittal Information

ATA Number TFE731-72-5221 (Publication Number D201010000006)

Summary

This is the INITIAL release.

Revision History

This service bulletin has had no revision(s) as shown in Table 1.

Table 1. Revision History

Revision Number Revision Date

0 11 Nov 2010

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1. Planning Information

A. Effectivity

(1) This is a CATEGORY 1, SAFETY service bulletin.

(2) This service bulletin is applicable to the turbofan aircraft engines shown in Table 2.

Table 2. Applicable Engine(s)

PN Model Number

Prior to Serial

Number 1 Application

3060020-8 thru -14 TFE731-20R-1B 111223 2 Learjet 45

3060082-2, -3, -4, -6, -7 TFE731-20AR-1B 132195 2 Learjet 40/45

3060084-1, -2 TFE731-20BR-1B Learjet 40/40XR/45/45XR

3062020-1 TFE731-40AR-200G 126286 2 G150

3060040-4, -5 TFE731-40R-200G G100 (Astra SPX)

3060050-1 TFE731-40-1C Falcon 50EX/50-40

3060090-1 TFE731-50R-1H 122395 2 Hawker 900XP

3060000-4 TFE731-60-1C 112964 2 Falcon 900EX/900DX

NOTES:

1. Refer to Paragraph 1.E. and Table 4 and Table 5 to determine the applicability of this service bulletin

to your engine.

2. This service bulletin affects engines having serial numbers prior to the listed serial number.

B. Concurrent Requirements

(1) Not applicable.

WARNING: FAILURE TO COMPLY WITH THIS SERVICE BULLETIN COULD RESULT

IN DISTRESS TO THE LPT2 ROTOR BLADES, PN 3075424-2, -3, AND

THIRD STAGE LOW PRESSURE TURBINE (LPT3) NOZZLE ASSEMBLY,

PN 3060655-6. IF LEFT UNCORRECTED, THIS DISTRESS COULD

RESULT IN AN UNCONTAINED LOW PRESSURE TURBINE (LPT) ROTOR

DISC EVENT AND COULD RESULT IN SERIOUS INJURY OR DEATH TO

PERSONNEL, AND LOSS OF OR DAMAGE TO THE AIRCRAFT.

C. Reason

(1) Problem: Some LPT2 rotor blades, PN 3075424-2, -3, produced from specific

machining lots were machined with an aft discourager that was longer than the design

requirement. During certain engine operating conditions, it is possible for these LPT2

rotor blades, PN 3075424-2, -3, to contact the LPT3 nozzle assembly, PN 3060655-6,

causing rub damage to the LPT2 rotor blades, PN 3075424-2, -3, and LPT3 nozzle

assembly, PN 3060655-6. This rub damage, if severe, could result in the separation of

the LPT3 nozzle assembly, PN 3060655-6, which would cause an engine shutdown

and a possible uncontained LPT disc event. LPT2 rotor blades, PN 3075424-2, -3, are

used in LPT2 rotor assembly, PN 3060608-2, -3, -5.

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(2) Background: During a routine replacement of LPT2 rotor blades, PN 3075424-2, -3, it

was noticed that the new LPT2 rotor blades, PN 3075424-2, -3, being installed had aft

discouragers that were approximately 0.020 inch (0.51 mm) longer than the existing

LPT2 rotor blades, PN 3075424-2, -3. Further investigation revealed that the aft

discouragers of the new LPT2 rotor blades, PN 3075424-2, -3, did not meet the design

requirements. Only LPT2 rotor blades, PN 3075424-2, -3, manufactured from specific

machining lots are affected. The suspect lots of LPT2 rotor blade, PN 3075424-2,

were manufactured between March 2009 and September 2010. The suspect lots

of LPT2 rotor blade, PN 3075424-3, were manufactured between July 2010 and

September 2010. Initially, four new production engines with LPT2 rotor blades, PN

3075424-2, -3, from the affected machining lots were disassembled and inspected.

Two of these engines had light contact marks on the LPT3 nozzle assembly, PN

3060655-6. Honeywell has subsequently inspected an additional 39 engines with

suspect LPT2 rotor blades with no evidence of contact between the LPT2 blade

discouragers and the LPT3 nozzle. There have been no reported engine shutdowns

due to this condition. LPT2 rotor blades, PN 3075424-2, -3, from the suspect blade

lots are to be returned to Honeywell for inspection and rework. Reworked LPT2 rotor

blades, PN 3075424-2, -3, will be reidentified with MFR-R or MRF-R on the underside

of the LPT2 rotor blade aft discourager.

(3) Action: Remove from service any LPT2 rotor blade, PN 3075424-2, -3, identified

with a lot number listed in Table 5 that is not marked with MFR-R or MRF-R on

the underside of the LPT2 rotor blade aft discourager and return to Honeywell for

inspection and rework.

D. Description

(1) This service bulletin provides instructions to replace LPT2 rotor blades, PN 3075424-2,

-3, identified with specific machining lots, which were manufactured with aft

discouragers that did not meet the design requirements.

E. Compliance

(1) Compliance addresses a safety issue.

(2) The warranty/program data is listed in Table 3.

NOTE: The initial log book review to determine engine effectivity may be

accomplished by the Operator. The procedures outlined in this service

bulletin for the replacement of specific, identified LPT2 rotor blades, PN

3075424-2, -3, may be accomplished at the Major Service Center level or

greater.

Table 3. Warranty/Program Data

Warranty/Program Yes No

Commercial Warranty

(Standard new engine warranty)

X

Spare Part Warranty

(Standard new spare part warranty)

X

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Table 3. Warranty/Program Data (Cont)

Warranty/Program Yes No

Special Extended Warranty Program Number

(Extension of either standard commercial warranty or spare part warranty may apply)

X

Special Program Number 81

(Programs in which special pricing and/or special conditions may apply)

X

Special Pricing Notice Number

(Reduction from catalog list pricing, i.e., “P” condition pricing may apply)

X

MSP X

(3) Upon receipt of this service bulletin, review the engine log book (including the Life

Limited Part Log Card for the installed LPT2 rotor assembly, PN 3060608-2, -3,

-5), and this service bulletin to determine if the engine is affected, as indicated by

any of the following conditions:

(a) The engine is affected if the engine serial number is listed in Table 4 of

this service bulletin.

OR

(b) The engine is affected if the LPT2 rotor assembly, PN 3060608-2, -3, -5,

received maintenance between March 2009 and September 2010, which

resulted in the replacement of any quantity of LPT2 rotor blade, PN 3075424-2.

OR

(c) The engine is affected if the LPT2 rotor assembly, PN 3060608-2, -3, -5,

received maintenance between July 2010 and September 2010, which

resulted in the replacement of any quantity of LPT2 rotor blade, PN 3075424-3.

(4) If the engine serial number is not listed in Table 4 AND the LPT2 rotor assembly, PN

3060608-2, -3, -5, did not receive any maintenance that resulted in the replacement of

any quantity of LPT2 rotor blade, PN 3075424-2, between March 2009 and September

2010 AND the LPT2 rotor assembly, PN 3060608-2, -3, -5, did not receive any

maintenance that resulted in the replacement of any quantity of LPT2 rotor blade,

PN 3075424-3, between July 2010 and September 2010, then make an entry in the

engine log book and on the Life Limited Part Log Card for LPT2 rotor assembly, PN

3060608-2, -3, -5, indicating that Service Bulletin TFE731-72-5221 is not applicable.

(5) If it is determined that the engine is affected by this service bulletin, determine the

current total hours of operation of the installed suspect LPT2 rotor blades, PN

3075424-2, -3, (current total hours of suspect blade operation) as follows:

(a) For engines having serial numbers listed in Table 4, the current total hours of

suspect blade operation is the current engine total time since new (TSN).

(b) For engines that received any maintenance that resulted in the replacement

of any quantity of LPT2 rotor blade, PN 3075424-2, between March 2009

and September 2010 or any quantity of LPT2 rotor blade, PN 3075424-3,

between July 2010 and September 2010, the current total hours of suspect

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blade operation is the number of hours the engine has operated since any

suspect LPT2 rotor blade, PN 3075424-2, -3, was installed.

(6) If it is determined that the engine is affected by this service bulletin, Honeywell

recommends that the engine be disassembled for the removal of any suspect LPT2

rotor blade, PN 3075424-2, -3, at the next scheduled major periodic inspection (MPI)

or at next access to the LPT2 rotor assembly, PN 3060608-2, -3, -5, not to exceed

3000 hours TSN on the LPT2 rotor blades, PN 3075424-2, -3, or seven (7) years from

the initial release date of this service bulletin, whichever comes first. Next access

is defined as when the LPT module is disassembled.

NOTE: Removed LPT2 rotor blades, PN 3075424-2, -3, from the suspect LPT2

rotor blade lots are to be returned to Honeywell for inspection and rework.

Reworked LPT2 rotor blades, PN 3075424-2, -3, will be reidentified with

MFR-R or MRF-R on the underside of the LPT2 rotor blade aft discourager

and may be reinstalled even though they are marked with a machining lot

number listed on Table 5.

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Table 4. Engines With LPT2 Rotor Blades, PN 3075424-2, -3, From the Affected Machining Lots

Engine Model

Number

Engine

Serial

Number

Engine Model

Number

Engine

Serial

Number

Engine Model

Number

Engine

Serial

Number

TFE731-20AR-1B P132191 TFE731-50R-1H P122342 TFE731-50R-1H P122362

TFE731-20AR-1B P132192 TFE731-50R-1H P122343 TFE731-50R-1H P122363

TFE731-20AR-1B P132193 TFE731-50R-1H P122344 TFE731-50R-1H P122364

TFE731-20AR-1B P132194 TFE731-50R-1H P122345 TFE731-50R-1H P122365

TFE731-50R-1H P122325 TFE731-50R-1H P122346 TFE731-50R-1H P122366

TFE731-50R-1H P122326 TFE731-50R-1H P122347 TFE731-50R-1H P122367

TFE731-50R-1H P122328 TFE731-50R-1H P122348 TFE731-50R-1H P122368

TFE731-50R-1H P122329 TFE731-50R-1H P122349 TFE731-50R-1H P122369

TFE731-50R-1H P122330 TFE731-50R-1H P122350 TFE731-50R-1H P122370

TFE731-50R-1H P122331 TFE731-50R-1H P122351 TFE731-50R-1H P122371

TFE731-50R-1H P122332 TFE731-50R-1H P122352 TFE731-50R-1H P122372

TFE731-50R-1H P122333 TFE731-50R-1H P122353 TFE731-50R-1H P122373

TFE731-50R-1H P122334 TFE731-50R-1H P122354 TFE731-50R-1H P122374

TFE731-50R-1H P122335 TFE731-50R-1H P122355 TFE731-50R-1H P122375

TFE731-50R-1H P122336 TFE731-50R-1H P122356 TFE731-50R-1H P122376

TFE731-50R-1H P122337 TFE731-50R-1H P122357 TFE731-50R-1H P122385

TFE731-50R-1H P122338 TFE731-50R-1H P122358 TFE731-50R-1H P122386

TFE731-50R-1H P122339 TFE731-50R-1H P122359 TFE731-50R-1H P122387

TFE731-50R-1H P122340 TFE731-50R-1H P122360 TFE731-50R-1H P122388

TFE731-50R-1H P122341 TFE731-50R-1H P122361

Table 5. Affected Machining Lot Numbers of LPT2 Rotor Blades, PN 3075424-2, -3

LPT2 Rotor Blade PN Machining Lot Number

3075424-2 HM-0004 thru HM-0250

HM-9001 thru HM-9365

3075424-3 HM-0130 thru HM-0250

F. Approval

(1) The inspection authorized by this service bulletin complies with applicable Federal

Aviation Regulations and is FAA approved.

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G. Manpower

(1) An estimated 11.5 man-hour(s) is/are required to accomplish this change when

performed as part of scheduled maintenance.

H. Weight and Balance

(1) No change.

I. Electrical Load Data

(1) Not applicable.

J. Software Accomplishment Summary

(1) Not applicable.

K. References

(1) The sources of information used in the preparation of this service bulletin include

Honeywell engineering documentation and the documents listed in Table 6.

Table 6. Sources of Information

Part/Model Number

Heavy Maintenance

Manual

Light Maintenance

Manual 1

Illustrated Parts

Catalog 1

TFE731-20R-1B N/A 72-03-06 72-03-05

TFE731-20AR-1B N/A 72-03-06 72-03-05

TFE731-20BR-1B N/A 72-03-06 72-03-05

TFE731-40-1C N/A 72-03-06 72-03-09

TFE731-40AR-200G N/A 72-03-06 72-03-09

TFE731-40R-200G N/A 72-03-06 72-03-09

TFE731-50R-1H N/A 72-03-06 72-03-17

TFE731-60-1C N/A 72-03-06 72-03-13

NOTE:

1. Affected Chapter/Section/Subject 72-50-04.

(2) The service bulletin(s) listed in Table 7 is/are applicable to this service bulletin.

Table 7. Service Bulletin References

Service Bulletin Number Service Bulletin Title

TFE731-72-5179 ENGINE - TURBINE SECTION - Install Low Pressure Second Stage Turbine

(LPT2) Blades, PN 3075424-3

L. Other Publications Affected

(1) Same as those listed under Paragraph 1.K.(1).

(2) Inspection/Repair Manual, 72-IR-02.

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M. Interchangeability or Intermixability of Parts

(1) Not applicable.

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2. Material Information

A. Material - Price and Availability

(1) Honeywell will cover the cost of the LPT2 rotor blade, PN 3075424-2, -3, reworks

beyond the new engine warranty period at no cost to the operators up through the

completion of the next MPI. Operators out of new engine warranty at the time of MPI

may be responsible for the replacement/repair of other engine hardware not associated

with the LPT2 rotor blade, PN 3075424-2, -3, non-conformance addressed in this

service bulletin. Refer to TFE731 Special Program Number 81 for additional details.

(2) Information regarding price and availability of parts may be obtained from a

Honeywell-authorized service facility. (Refer to Service Information Letter

(SIL) F731-3.) A listing of authorized service facilities is also available on

the e-Engines website (www.e-engines.honeywell.com). Availability and

pricing of parts may also be obtained from the Honeywell Product Catalog at

http://portal.honeywell.com/wps/portal/aero.

B. Industry Support Information

(1) A special program is available for this modification, under certain conditions, provided

compliance recommendations of Paragraph 1.E. are met. Information on special

program and availability of parts may be obtained from a Honeywell-authorized

service facility. (Refer to Service Information Letter (SIL) F731-3.) A listing

of authorized service facilities is also available on the e-Engines website

(www.e-engines.honeywell.com).

C. Material Necessary for Each Engine

(1) The parts required to accomplish the instructions outlined in this service bulletin are

shown in Table 8. Refer to Table 9 for the Instructions/Disposition Codes.

NOTE: Applicable illustrated parts catalogs and spare parts bulletins, dated later

than the original issue date of this service bulletin, may introduce different

parts for installation. Refer to these documents before ordering parts.

NOTE: Expendable parts, discarded in gaining access to the affected area of

the equipment, are not included.

Table 8. Operator-Purchased Material

New PN

Keyword/

Nomenclature Old PN Qty

Unit

Price 1

Instructions/

Disposition

Codes

3075424-2 2

or

3075424-3 3

LPT2 rotor blade 3075424-2

or

3075424-3

AR 4 T, O

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Table 8. Operator-Purchased Material (Cont)

New PN

Keyword/

Nomenclature Old PN Qty

Unit

Price 1

Instructions/

Disposition

Codes

3060655-6 5 LPT3 nozzle assembly 3060655-6 1 E, R

3061829-1 Blade retainer 3061829-1

or

3060649-5

52 B

NOTES:

1. Refer to Paragraph 2.A. for information regarding price and availability of parts.

2. If LPT2 rotor blade, PN 3075424-2, is installed, after assembly the LPT2 rotor assembly, PN 3060608-2, -3,

-5, must be returned to Honeywell Phoenix for high speed tip grinding.

3. If LPT2 rotor blade, PN 3075424-3, is used, no tip grinding is required. Refer to Service Bulletin

TFE731-72-5179.

4. The quantity required depends on the number of LPT2 rotor blades, PN 3075424-2, -3, required to be

replaced, up to a maximum quantity of 52.

5. Required only if LPT3 nozzle assembly, PN 3060655-6, is rejected.

Table 9. Instructions/Disposition Codes

Code Description

Disposition Code B Dispose of old part according to company practices.

Disposition Code E Reinstall removed part if serviceable; if not, replace.

Disposition Code O Replacement part is available on exchange basis. Contact your service facility for

details.

Disposition Code R Send the old part to Honeywell International Inc., Material Receiving, 1944 E. Sky

Harbor Circle, Phoenix, AZ 85034-3440 for evaluation.

Disposition Code T If the removed LPT2 rotor blades, PN 3075424-2, -3, are marked with a machining lot

number listed in Table 5, return the LPT2 rotor blades, PN 3075424-2, -3, regardless

of condition. Otherwise, inspect and reuse if acceptable. Tag the rejected LPT2

rotor blades, PN 3075424-2, -3, as unserviceable and reference Service Bulletin

TFE731-72-5221 and the total hours of the LPT2 rotor blades, PN 3075424-2,

-3. Send the unserviceable LPT2 rotor blades, PN 3075424-2, -3, to Honeywell

International Inc., Material Receiving, 1944 E. Sky Harbor Circle, Phoenix, AZ

85034-3440. Indicate on the shipping paperwork that the part is being returned in

accordance with Service Bulletin TFE731-72-5221 and TFE731 Special Program

Number 81.

D. Material Necessary for Each Spare

(1) The same as given in Paragraph 2.C.

E. Reidentified Parts

(1) Not applicable.

F. Tooling - Price and Availability

(1) No special tooling is required except that already listed in publications referenced

in Paragraph 1.K.(1).

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3. Accomplishment Instructions

A. General Information

NOTE: Publications listed in Paragraph 1.K.(1) provide applicable disassembly, cleaning,

inspection, reassembly, and testing instructions and shall be referred to during the

accomplishment of the following instructions.

B. Replace LPT2 Rotor Blades, PN 3075424-2, -3, Identified With Suspect Lot Numbers

(1) Review Paragraph 1.E. to make sure this service bulletin is applicable before

disassembling the engine.

(2) Disassemble the engine, as required, to get access to and remove the LPT2

rotor assembly, PN 3060608-2, -3, -5. Refer to the instructions in the engine light

maintenance manual (LMM).

(3) Remove all LPT2 rotor blades, PN 3075424-2, -3, from the LPT2 rotor assembly, PN

3060608-2, -3, -5, in accordance with the instructions in the engine LMM. For each

removed LPT2 rotor blade, PN 3075424-2, -3, accomplish the following inspection:

(a) Measure the axial length of each LPT2 rotor blade, PN 3075424-2, -3, as

shown in Figure 1. The total axial length must not exceed 1.682 inches

(42.72 mm).

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Figure 1. (Sheet 1 of 1) LPT2 Rotor Blades, PN 3075424-2, -3, Maximum Axial Length and Marking

Locations

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KEY TO FIGURE 1 (SHEET 1 OF 1)

Reference

Limits

Inches (mm)

DIM. A 1.682 (42.72)

(b) Inspect each removed LPT2 rotor blade, PN 3075424-2, -3, to determine the

machining lot number. Refer to Figure 1.

(c) Notify Honeywell if any LPT2 rotor blade, PN 3075424-2, -3, fails the axial

length check and is identified with a machining lot number that is NOT listed in

Table 5. Also notify Honeywell if a removed LPT2 rotor blade, PN 3075424-2,

-3, is identified with a machining lot number listed in Table 5, but passes the

axial length check.

(4) Reject any removed LPT2 rotor blade, PN 3075424-2, -3, that is identified with a

machining lot number listed in Table 5, or any LPT2 rotor blade, PN 3075424-2, -3,

that exceeds the maximum total axial length specified in Paragraph 3.B.(3)(a).

(a) Return any rejected LPT2 rotor blade, PN 3075424-2, -3, to Honeywell for

inspection and repair in accordance with Table 9.

(b) Tag the rejected LPT2 rotor blades, PN 3075424-2, -3, as unserviceable,

and reference Service Bulletin TFE731-72-5221 and the total hours of the

LPT2 rotor blades, PN 3075424-2, -3.

NOTE: Replacement LPT2 rotor blades, PN 3075424-2, -3, shipped

after September 2010 may be identified with one of the suspect

machining lot numbers listed in Table 5. These LPT2 rotor blades,

PN 3075424-2, -3, were inspected and repaired by Honeywell and

will be identified with MFR-R or MRF-R on the underside of the

LPT2 rotor blade aft discourager, and may be installed. Make sure

any replacement LPT2 rotor blade, PN 3075424-2, -3, identified

with a lot number listed in Table 5, is also identified with the rework

identifier MFR-R or MRF-R on the underside of the LPT2 rotor

blade aft discourager before installation. Refer to Figure 1.

(c) Any LPT2 rotor blade, PN 3075424-2, -3, that is not identified with a machining

lot number listed in Table 5 AND passes the axial length check (refer to

Paragraph 3.B.(3)(a)), may be reused provided all other maintenance manual

inspection criteria are met.

(5) Reassemble the LPT2 rotor assembly, PN 3060608-2, -3, -5, using serviceable LPT2

rotor blades, PN 3075424-2, -3, in accordance with the instructions in the engine LMM.

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Make sure all of the engine LMM requirements are met, including balance, tip grind (as

necessary), and LPT2 rotor assembly, PN 3060608-2, -3, -5, tip diameter requirements.

NOTE: If any new, unused LPT2 rotor blade, PN 3075424-2, is being installed, the

LPT2 rotor assembly, PN 3060608-2, -3, -5, must be sent to Honeywell

Phoenix for high speed tip grind. If previously used (previously tip ground)

LPT2 rotor blade, PN 3075424-2, is received, it may be installed without tip

grind provided all of the engine LMM requirements for LPT2 rotor assembly,

PN 3060608-2, -3, -5, tip diameter are met.

(6) Inspect the LPT3 nozzle assembly, PN 3060655-6, for evidence of rub on the forward

surface of the seal support flange. Refer to Figure 2.

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Figure 2. (Sheet 1 of 1) Rub Inspection of LPT3 Nozzle Assembly, PN 3060655-6

(7) If the LPT3 nozzle assembly, PN 3060655-6, has no evidence of contact with the LPT2

rotor blades, PN 3075424-2, -3, the nozzle may be reused if all other maintenance

manual inspection criteria are met.

(8) If the LPT3 nozzle assembly, PN 3060655-6, shows only light, intermittent witness

marks with no measurable depth into the nozzle parent material, and the nozzle meets

all other maintenance manual inspection criteria, repair the nozzle as follows:

(a) Lightly hand blend witness marks and any positive buildup to provide a surface

finish of 63 microinches (0.0016 mm), or better.

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(b) Accomplish a pre-penetrant etch of the repaired areas in accordance with

72-IR-02, Appendix 2, REPAIR, Method Number 418.

(c) Accomplish a Level 4 fluorescent penetrant inspection of the repaired area

only. Refer to 72-IR-02, Appendix 1, INSPECTION, Method Number 302A.

No indications are allowed.

(9) If the LPT3 nozzle assembly, PN 3060655-6, has rub damage with any measurable

depth into the nozzle parent material, reject the nozzle and return it to Honeywell for

inspection and possible repair. Refer to Table 9.

(10) Reassemble the engine. Refer to the instructions in the engine LMM.

(11) Check and ensure proper engine operation in accordance with the aircraft flight

manual and/or appropriate aircraft documents.

(12) Upon completion of engine reassembly, check and ensure proper engine operation in

accordance with the engine test instructions.

(13) Make an entry in the engine log book noting date of compliance, engine operating

time, part number(s) and serial number(s) of installed component(s) (as applicable),

and compliance with this service bulletin (and service bulletin revision number, if

applicable).

(14) Complete the Certificate of Compliance form in Paragraph 4.A. and send to Honeywell.

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Blank Page

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4. Appendix

A. Appendix A, Certificate of Compliance

To: Operator or Service Center Performing Modification

Upon modification of equipment, please fill in the information requested below, then mail or fax the completed

certificate to:

Honeywell International Inc.

111 S 34th Street, Mail Stop 503-320

Phoenix, AZ 85034-2802

Fax: (602) 231-3014

Owner/Operator

Aircraft Model Aircraft Serial Number

I certify that the following engine/equipment has been modified in accordance with the listed service bulletins.

Table 10. ENGINE/EQUIPMENT

NUMBER 1 NUMBER 2 NUMBER 3 NUMBER 4

PART NUMBER PART NUMBER PART NUMBER PART NUMBER

MODEL NUMBER MODEL NUMBER MODEL NUMBER MODEL NUMBER

SERIAL NUMBER SERIAL NUMBER SERIAL NUMBER SERIAL NUMBER

TSN/TSO TSN/TSO TSN/TSO TSN/TSO

CYCLES CYCLES CYCLES CYCLES

SERVICE

BULLETIN

NUMBER

REV.

NUMBER

SERVICE

BULLETIN

NUMBER

REV.

NUMBER

SERVICE

BULLETIN

NUMBER

REV.

NUMBER

SERVICE

BULLETIN

NUMBER

REV.

NUMBER

Signature Date

Repair Facility

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FAX TO U.S.A.

(602) 231-3014

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