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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

GE PROPRIETARY INFORMATION

The information contained in this document is GE proprietary information and is disclosed in

confidence. It is the property of GE and shall not be used, disclosed to others or reproduced

without the express written consent of GE, including, but without limitation, it is not to be used

in the creation, manufacture, development, or derivation of any repairs, modifications, spare

parts, designs, or configuration changes or to obtain FAA or any other government or regulatory approvaltodo so. If consent is givenfor reproductionin whole or in part,this notice andthe

notice set forth on each page of this document shall appear in any such reproduction in whole

or in part.

This technical data is considered EAR controlled pursuant to 15 CFR Parts 730-774 respectively. Transfer of this data by any means to a Non-US Person, whether in the United States

or abroad, withoutthe proper U.S.Government authorization (e.g., License, exemption, NLR,

etc.), is strictly prohibited.

GEAE authorizes the Federal Aviation Administration to incorporate this document by reference in an Airworthiness Directive.

Copyright (2011) General Electric Company, U.S.A.

December 16, 2011 CF6-80C2 S/B 72-1427

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

1. PLANNING INFORMATION

A. Effectivity

CF6-80C2A1/A2/A3/A5/A5F/A8/B1/B1F/B2/B2F/B4/B4F/B5F/B6/B6F/B6FA/B7F/

B8F/D1F/K1F/L1F

This Service Bulletin is applicable to all CF6-80C2 engines post-CF6-80C2

S/B 72-0266.

B. Description

This Service Bulletin provides a borescope inspection (BSI) procedure to inspect

for acceptable flow of No. 3 bearing packing either with the engine installed or

assembled and removed.

C. Compliance

Category 7

GE recommends that you do this Service Bulletin at customer's option.

NOTE: This Service Bulletin can be accomplished on wing or in shop.

D. Concurrent Requirements

None.

E. Reason

(1) Objective:

Provide operators with a procedure to inspect for acceptable flow of the No. 3

bearing packing with the engine installed or assembled in shop.

(2) Condition:

Customers have requested an on-wing procedure to inspect for acceptable

flow of No. 3 bearing packing.

(3) Cause:

It is possible to install the incorrect No. 3 bearing packing at shop visit.

(4) Inspection:

BSI procedure to inspect for acceptable flow of the No. 3 bearing packing

without separating the fan frame from the core. This may be accomplished on

wing or in shop.

December 16, 2011 CF6-80C2 S/B 72-1427

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

(5) Substantiation:

Procedure has successfully demonstrated that the No. 3 bearing packing flow

can be identified by visual measurement of certain No. 3 bearing packing

hole diameter via BSI.

NOTE: Acceptability of flow has been determined by analyzing worst case

configurations and determining the impact on part life.

F. Approval

This Service Bulletin has been reviewed by the FAA and the repair(s) and

modification(s) herein comply with the applicable Federal Aviation Regulations and

are FAA APPROVED for installation in the model(s) listed in this Service Bulletin.

G. Manpower

After you get access to the fan frame module, you will need approximately 1

man-hour to do the inspection portion of this Service Bulletin.

H. Weight and Balance

Weight and balance are not changed.

I. References (Use the latest version of these documents)

Airbus A300-600, Aircraft Maintenance Manual (AMM)

Airbus A310-300, Aircraft Maintenance Manual (AMM)

Boeing 747-300/400, Aircraft Maintenance Manual (AMM)

Boeing 767-300/400, Aircraft Maintenance Manual (AMM)

CF6-80C2K1F C-X Aircraft Maintenance Manual (AMM)

CF6-80C2L1F C-5M Aircraft Maintenance Manual (AMM)

McDonnel Douglas MD-11, Aircraft Maintenance Manual (AMM)

GEK 92451, CF6-80C2 Engine Manual (EM)

GEK 112213, CF6-80C2L1F Engine Manual (EM)

GEK 112721, CF6-80C2K1F Engine Manual (EM)

CF6-80C2 S/B 72-0204, ENGINE - Fan Module - 3R Gasko Seal Bore Cooling

Reduction

CF6-80C2 S/B 72-0266, ENGINE - Introduction of Bore Cooling Hardware for

Improved Performance

December 16, 2011 CF6-80C2 S/B 72-1427

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

CF6-80C2 S/B 72-1405, ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module

(72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing

CF6-80C2 S/B 75-0157, AIR - Bore Cooling Valves (72-00-01) - Elimination (Block II)

CF6-80C2 S/B 75-0198, AIR - Bore Cooling Air System (72-00-01) - Elimination

NOTE: The reference document listed below is for the engine manufacturer's

internal use only:

BPP: CF6-11-72-23-01

J. Publications Affected

None.

K. Interchangeability

Not applicable.

L. Software Accomplishment Summary

Not applicable.

2. MATERIAL INFORMATION

A. Material - Price and Availability

(1) Parts necessary to do this Service Bulletin:

None.

(2) Other Spare Parts:

Part Number

Qty/

Eng Part Name

Unit ($)

Price

Pkg

Qty

Lead

Time

Days

1538M82P01 (2) Gasket, Air Fan Quote (-) Quote

9381M44P05 (6) Screw Quote (-) Quote

J219P06 (2) Gasket, Seal Quote (-) Quote

MS9557-10 (8) Bolt, Double

Hexagon Head

Machine

Quote (-) Quote

NOTE: Prices are provided for planning purposes and are subject to change.

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

(3) Consumables:

Code Number Description

C01-006 RTV, Silicone Elastomer (silicone) (black)

C04-001 Solvent, General [methyl ethyl ketone (MEK)]

C04-030 Solvent, General (solvent)

B. Industry Support Information

None.

C. Configuration Chart

None.

D. Parts Disposition

None.

E. Tooling - Price and Availability

Tool

Number

Description

-- Borescope

NOTE: Borescope with head capable of measuring hole diameter (such as

shadowscope or stereoscope).

3. ACCOMPLISHMENT INSTRUCTIONS

A. Inspection of the No. 3 Bearing Packing

NOTE: This Service Bulletin only determines acceptability of flow provided by the

No. 3 bearing packing. The CF6-80C2 S/B 72-1405 needs to be completed

next time the fan frame is separated from the core to identify the No. 3

bearing packing configuration.

(1) If procedure is done with the engine installed on wing, gain access to the

fan frame. Refer to applicable AMM.

(2) Verify there are either blank-off plates or air tubes connecting to the fan

case at either 3:00 o'clock or 9:00 o'clock and at 5:00 o'clock position. Refer

to Figure 1.

(3) Determine fan frame part number.

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

(4) Do BSI as follows:

(a) If the engine contains a blank-off plate on the fan case at the 3:00

o’clock (fan frame strut No. 4) or 9:00 o’clock (fan frame strut No. 10),

and 5:00 o’clock (fan frame strut No. 6) position:

1 Disassemble flowpath fairing at either the 3:00 o'clock (fan frame

strut No. 4) or 9:00 o'clock (fan frame strut No. 10) position from

case by removing four screws and tapered bushings. Do not attempt

to remove the flowpath fairing. Slide it inward on the fan frame struts

as necessary to do the step below.

2 Remove the blank-off plate by removal of the three double hexagon

head machine bolts (bolts), washers, and nuts that attach the

blank-off plate and air fan gasket (gasket) to the strut at 3:00 o'clock

(fan frame strut No. 4) or 9:00 o'clock (fan frame strut No. 10)

position. Discard the gasket.

3 Insert borescope with a head capable of measuring hole diameter

(such as a stereoscope or shadowscope head) to the aft side of the

fan frame strut (Figure 1 and Figure 2).

4 Following the trailing edge of the fan frame strut, continue to thread

borescope until the No. 3 bearing packing is reached. One hole in

the forward side of the No. 3 bearing packing will be visible.

NOTE: The No. 3 bearing packings that have a 3:00 o'clock or

9:00 o'clock hole diameter of 0.89-0.91 in. (22.6-23.1 mm)

may not be completely visible at the 3:00 o'clock (fan frame

strut No. 4) or 9:00 o'clock (fan frame strut No. 10) position

due to the size of the fan frame hole.

5 Use the borescope to measure the No. 3 bearing packing cooling

hole diameter. If fan frame part number series is identified as

9382M37GXX, record hole diameter in APPENDIX B. For all other

fan frame part number series, use APPENDIX A. Record the hole

diameter in the applicable APPENDIX A or APPENDIX B. If No. 3

bearing packing hole is not completely visible at the 3:00 o'clock

(fan frame strut No. 4) or 9:00 o'clock (fan frame strut No. 10)

position then mark as 0.89-0.91 in. (22.6-23.1 mm) in the applicable

APPENDIX A or APPENDIX B.

December 16, 2011 CF6-80C2 S/B 72-1427

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

6 Remove the borescope and re-install the blank off plate, as follows:

WARNING: DO NOT USE CLEANING SOLVENTS NEAR FLAMES

OR HEAT OR LET THEM STAY ON YOUR SKIN.

ALSO, MAKE SURE YOU HAVE A GOOD FLOW OF

CLEAN AIR. THIS MATERIAL IS FLAMMABLE AND

DANGEROUS TO YOUR SKIN, EYES, AND LUNGS.

WARNING: METHYL ETHYL KETONE (C04-001) IS TOXIC. USE

PERSONAL PROTECTION EQUIPMENT. USE IN A

WELL VENTILATED AREA.

a Clean the mating surfaces of the gasket and blank-off plate with

solvent (C04-030) or MEK (C04-001).

WARNING: RTV-732 IS TOXIC AND FLAMMABLE. USE

PERSONAL PROTECTION EQUIPMENT. USE IN A

WELL VENTILATED AREA.

b Apply silicone (C01-006) to the mating surfaces of the gasket

and blank-off plate.

c Put the blank-off plate on the bolt-holes between the aft fan case

T rings at the 3:00 o’clock (fan frame strut No. 4) or 9:00 o’clock

(fan frame strut No. 10) position.

d Attach the blank-off plate with the gasket and bolts, washers,

and nuts.

e Torque the nuts to 100-130 lb in. (11.3-14.7 N·m).

7 Slide the fairing down the fan frame strut and attach to the fan case

with four tapered bushings and self-retaining screws. Replace any

screw that requires more than a 15.00 lb (67 N) insertion force.

Torque the screws to 55-70 lb in. (6.2-7.9 N·m).

WARNING: METHYL ETHYL KETONE (C04-001) IS TOXIC. USE

PERSONAL PROTECTION EQUIPMENT. USE IN A WELL

VENTILATED AREA.

8 Use a clean cloth moistened with MEK (C04-001) to clean the areas

in and around the gaps between the flowpath fairings and the fan

frame strut, and the gaps between the flowpath fairings and the

aft fan case.

WARNING: RTV-732 IS TOXIC AND FLAMMABLE. USE PERSONAL

PROTECTION EQUIPMENT. USE IN A WELL

VENTILATED AREA.

9 Apply a bead of silicone (C01-006) between the fan frame strut and

the flowpath fairing and between the aft fan case and the flowpath

fairing. Apply silicone (C01-006) in the contour of all adjacent

surfaces.

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Flow Acceptability

10 Repeat steps 3.A.(4)(a)1 through 3.A.(4)(a)9 for 5:00 o’clock (fan

frame strut No. 6) position.

NOTE: If fan frame part number series is 9382M37GXX, then only

No. 3 bearing packings with hole diameter of 0.12-0.13 in.

(3.1-3.3 mm) will be visible at the 5:00 o'clock (fan frame

strut No. 6) position. If No. 3 bearing packing is not visible

at the 5:00 o'clock (fan frame strut No. 6) position, mark as

HOLE NOT VISIBLE in APPENDIX B.

11 Determine flow of installed No. 3 bearing packing per Table 1. Refer

to Table 2 if the fan frame part number series is 9382M37GXX. If the

hole diameter measured at any one of the 3:00 o'clock (fan frame

strut No. 4) or 9:00 o'clock (fan frame strut No. 10) or 5:00 o'clock

(fan frame strut No. 6) positions is determined to be ACCEPTABLE

FLOW then the flow provided by the No. 3 bearing packing is

acceptable and this Service Bulletin has been complied with. If none

of these positions are determined to be ACCEPTABLE FLOW then

this Service Bulletin has not been complied with.

(b) If the engine contains a bore air tube on the fan case at the 3:00 o'clock

(fan frame strut No. 4) or 9:00 o'clock (fan frame strut No. 10), and 5:00

o’clock (fan frame strut No. 6) position:

1 Remove the end of bore air tube at 3:00 o'clock (fan frame strut No.

4) or 9:00 o'clock (fan frame strut No. 10) position.

2 Insert borescope with a head capable of measuring hole diameter

(such as a stereoscope or shadowscope head) to the aft side of the

3:00 o’clock (fan frame strut No. 4) or 9:00 o’clock (fan frame strut

No. 10) position (Figure 1 and Figure 2).

3 Following the trailing edge of the fan frame strut, continue to thread

borescope until the No. 3 bearing packing is reached. One hole in

the forward diameter of the No. 3 bearing packing will be visible.

NOTE: The No. 3 bearing packings that have a 3:00 o'clock or

9:00 o'clock hole diameter of 0.89-0.91 in. (22.6-23.1 mm)

may not be completely visible at the 3:00 o’clock (fan frame

strut No. 4) or 9:00 o’clock (fan frame strut No. 10) position

due to the size of the fan frame hole.

4 Use the borescope to measure the No. 3 bearing packing cooling

hole diameter. If fan frame part number series is identified as

9382M37GXX, record hole diameter in APPENDIX B. For other

fan frame part number series, use APPENDIX A. Record the hole

diameter in the applicable APPENDIX A or APPENDIX B. If No. 3

bearing packing hole is not completely visible at the 3:00 o'clock

(fan frame strut No. 4) or 9:00 o'clock (fan frame strut No. 10)

position then mark as 0.89-0.91 in. (22.6-23.1 mm) in the applicable

APPENDIX A or APPENDIX B.

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

5 Remove the borescope and re-install the bore tube at either the 3:00

o’clock (fan frame strut No. 4) or 9:00 o’clock (fan frame strut No.

10) position. Refer to the CF6-80C2 EM, 72-00-01, ASSEMBLY 003.

6 Repeat steps 3.A.(4)(b)1 through 3.A.(4)(b)5 for 5:00 o'clock (fan

frame strut No. 6) position.

NOTE: If fan frame part number series is 9382M37GXX, then only

No. 3 bearing packings with hole diameter of 0.12-0.13 in.

(3.1-3.3 mm) will be visible at the 5:00 o'clock (fan frame

strut No. 6) position. If No. 3 bearing packing is not visible

at the 5 o'clock position, then mark as HOLE NOT VISIBLE

in APPENDIX B.

7 Determine flow of installed No. 3 bearing packing per Table 1. Refer

to Table 2 if fan frame part number series is 9382M37GXX. If the

hole diameter measured at any one of the 3:00 o'clock (fan frame

strut No. 4) or 9:00 o'clock (fan frame strut No. 10) or 5:00 o'clock

(fan frame strut No. 6) positions is determined to be ACCEPTABLE

FLOW then the flow provided by the No. 3 bearing packing is

acceptable and this Service Bulletin has been complied with. If none

of these positions are determined to be ACCEPTABLE FLOW then

this Service Bulletin has not been complied with.

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

Table 1 - Fan frame part number is not series 9382M37GXX

Strut

No.

No. 3 Bearing

Packing Hole

Diameter

CF6-80C2

PMC

Cert/

72-204/

75-198

(No Tubes)

CF6-80C2

BF

Post

75-0157

CONFIG 2

(No Tubes)

CF6-80C2

PMC

Post

72-0266

(Tubes

and Valves)

CF6-80C2

BF

Cert/

75-0157

CONFIG 1

(Tubes)

CF6-80C2

AF/D1F

All

(Tubes

and Valves)

CF6-80C2

L1F/k1F

All

0.89-0.91 inch

(22.6-23.1 mm)*

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow **

0.77-0.79 inch

(19.6-20.1 mm)

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

4

or

10

0.12-0.13 inch

(3.1-3.3 mm)   **  AcceptableFlow ** **

0.77-0.79 inch

(19.6-20.1 mm)

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

0.30-0.32 inch

(7.6-8.1 mm)

Acceptable

Flow   AcceptableFlow **  ** 6

0.12-0.13 inch

(3.1-3.3 mm)   AcceptableFlow

Acceptable

Flow

Acceptable

Flow ** 

*No. 3 bearing packings with hole diameters that measure 0.89-0.91 inch (22.6-23.1 mm) may

not be completely visible due to fan frame hole diameter.

**Refer to paragraph 3.A.(4).(a)11 or 3.A.(4).(b)7 as appropriate.

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

Table 2 - Fan frame part number series is 9382M37GXX

Strut

No.

No. 3 Bearing

Packing Hole

Diameter

CF6-80C2

PMC

Cert/

72-204/

75-198

(No Tubes)

CF6-80C2

BF

Post

75-0157

CONFIG 2

(No Tubes)

CF6-80C2

PMC

Post

72-0266

(Tubes

and Valves)

CF6-80C2

BF

Cert/

75-0157

CONFIG 1

(Tubes)

CF6-80C2

AF/D1F

All

(Tubes

and Valves)

CF6-80C2

L1F/K1F

All

0.89-0.91 inch

(22.6-23.1 mm)*

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow **

0.77-0.79 inch

(19.6-20.1 mm)

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

Acceptable

Flow

4

or

10

0.12-0.13 inch

(3.1-3.3 mm)   **  AcceptableFlow ** **

Hole Not Visible Acceptable

Flow   AcceptableFlow **  **

6

0.12-0.13 inch

(3.1-3.3 mm)   AcceptableFlow

Acceptable

Flow

Acceptable

Flow ** 

*No. 3 bearing packings with hole diameters that measure 0.89-0.91 inch (22.6-23.1 mm) may

not be completely visible due to fan frame hole diameter.

**Refer to paragraph 3.A.(4).(a)11 or 3.A.(4).(b)7 as appropriate.

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

Fan Frame Borescope Entry Point (in all 3 sheets)

Figure 1, ( Sheet 1 of 3 )

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

Fan Frame Borescope Entry Point

Figure 1, ( Sheet 2 )

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

Fan Frame Borescope Entry Point

Figure 1, ( Sheet 3 )

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

No. 3 Bearing Packing Hole Measure Inspection

Figure 2

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ENGINE - Fan Module (72-00-01) - CF6-80C2 Borescope Inspection for No. 3 Bearing Packing

Flow Acceptability

4. APPENDIX A

No. 3 bearing packing hole diameter record.

0.89-0.91 inch

(22.6-23.1 mm)*

0.77-0.79 inch

(19.6-20.1 mm)

0.12-0.13 inch

(3.1-3.3 mm)

Hole Diameter 3:00 o’clock

(Fan Frame Strut No. 4)

OR

Hole Diameter 9:00 o’clock

(Fan Frame Strut No. 10)

0.77-0.79 inch

(19.6-20.1 mm)

0.30-0.32 inch

(7.6-8.1 mm)

0.12-0.13 inch

(3.1-3.3 mm)

Hole Diameter 5:00 o’clock

(Fan Frame Strut No. 6)

*No. 3 bearing packings with hole diameters that measure 0.89-0.91 inch (22.6-23.1 mm) may

not be completely visible due to fan frame hole diameter.

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5. APPENDIX B

No. 3 bearing packing hole diameter record when fan frame part number series is

9382M37GXX.

0.89-0.91 inch

(22.6-23.1 mm)*

0.77-0.79 inch

(19.6-20.1 mm)

0.12-0.13 inch

(3.1-3.3 mm)

Hole Diameter 3:00 o’clock

(Fan Frame Strut No. 4)

OR

Hole Diameter 9:00 o’clock

(Fan Frame Strut No. 10)

Hole Not Visible 0.12-0.13 inch

(3.1-3.3 mm)

Hole Diameter 5:00 o’clock

(Fan Frame Strut No. 6)

*No. 3 bearing packings with hole diameters that measure 0.89-0.91 inch (22.6-23.1 mm) may

not be completely visible due to fan frame hole diameter.

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