ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

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 approval to do so. If

consent is given for reproduction in whole or in part, this notice and the 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,

without the proper U.S. Government authorization (e.g., License, exemption, NLR, etc.), is strictly

prohibited.

Copyright (2014) General Electric Company, U.S.A.

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 1 of 16
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

TRANSMITTAL INFORMATION

REVISION 1 TO SERVICE BULLETIN 73-0121

Revision 1 is issued to update the Service Bulletin title, paragraphs 1., PLANNING INFORMATION,

and 3., ACCOMPLISHMENT INSTRUCTIONS.

The original was issued July 02, 2013. Revision bars in the left margin identify changes.

1. PLANNING INFORMATION

A. Effectivity

CF6-80E1A2, A3, A4, A4/B

This Service Bulletin is applicable to post-CF6-80E1 S/B 73-0026 and pre-CF6-80E1

S/B 73-0099 CF6-80E1 engines.

The left and right side fuel manifolds (fuel manifolds) post-CF6-80E1 S/B 73-0026

(drain-less) and pre-CF6-80E1 S/B 73-0099 configurations are affected by this

Service Bulletin.

B. Description

This Service Bulletin provides a repetitive inspection procedure for epoxy wear

sleeve (epoxy sleeve) or repaired fuel manifolds with PTFE coated para-aramid

tape and tube clamp (block clamp) P/N 1153M26G15 replacement for the affected

fuel manifolds configurations. The inspection is necessary to detect damage of the

epoxy sleeve or repaired fuel manifolds with PTFE coated para-aramid tape in

the fuel manifolds, which can result from relative motion between the block clamp

and the fuel manifold.

C. Compliance

Category 2

GE recommends that you do this Service Bulletin as soon as possible without effect

on revenue service but before reaching the threshold inspection intervals for each

fuel manifold as follows:

Do an initial inspection within the first six months after the issue date of this Service

Bulletin and do the repetitive inspection at the same interval (every 7,500 flight

hours) as the fuel manifold cushion clamps inspection. Refer to CF6-80E1 S/B

73-0061.

NOTE 1: For non-installed engines, accomplish the initial inspection prior to installation

on wing, thereafter perform the repetitive inspection as instructed in this

Service Bulletin.

NOTE 2: This Service Bulletin can be accomplished on wing or in shop.

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 2

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

This Service Bulletin is offered to improve the reliability or performance of your GE

product, or to help prevent the occurrence of the event or condition described in this

Service Bulletin. If the operator elects not to participate in the bulletin, that decision

will be taken into consideration by GE in evaluating future product performance

issues that may arise in the operator’s fleet.

D. Concurrent Requirements

None.

E. Reason

(1) Objective:

To improve reliability and reduce significant events.

(2) Condition:

Tube wall thinning on the fuel manifolds, if undetected, can result in a fuel

leak. This fuel manifold system is common to the CF6-80C2 and CF6-80E1

engine programs.

(3) Cause:

Looseness of the clamp due to a poor fit between the clamp and the epoxy

wear sleeve or repaired fuel manifolds with PTFE coated para-aramid tape

at the extremes of dimensional variation from manufacturing. Time exposure

of the block clamp with the epoxy sleeve is also a contributor to cause wear

of the epoxy sleeve with wear/damage affecting the fuel manifold (thins the

tube wall beyond serviceable limits).

(4) Configuration Description:

The accomplishment of this Service Bulletin will result in the replacement of

the worn epoxy wear sleeve or existing PTFE coated para-aramid tape with a

new PTFE coated para-aramid tape.

(5) Inspection:

This inspection will allow detection of worn fuel manifolds on the epoxy sleeve

area. The block clamps are replaced with serviceable block clamps to ensure

that damaged block clamps are not installed on the engine.

(6) Substantiation:

Substantiation is based upon design analysis and field inspection data

analysis.

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 3

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

F. Approval

(FAA Approval Statement TBD by FAA-DER prior to issue)

Statement 1:

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.

OR

Statement 2:

This Service Bulletin contains no modification information that revises the approved

configuration and therefore does not require FAA approval.

G. Manpower

After you get access to the fuel manifolds and block clamps, you will need

approximately 1.0 man-hour to inspect the fuel manifolds and replace the block

clamps if damaged, for each engine. If removal and installation of the fuel manifolds

are necessary, you will need approximately 10 man-hours.

H. Weight and Balance

Weight and balance are not changed.

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

CF6-80E1 Airbus A330 Aircraft Maintenance Manual (AMM) (April 01, 2014 or

later approved revision)

CF6-80E1 S/B 73-0026, ENGINE FUEL AND CONTROL - Core Module (72-00-02)

- Delete Fuel Drain System for the Fuel and Drain Manifold

CF6-80E1 S/B 73-0061, ENGINE FUEL AND CONTROL - (72-00-02) - Fuel

Manifold Inspection and Clamp Replacement

CF6-80E1 S/B 73-0096, FUEL AND CONTROL - Core Engine Module (72-00-02) -

Fuel Manifold PTFE Tape Installation for Post-CF6-80E1 S/B 73-0026 Engines

CF6-80E1 S/B 73-0099, ENGINE FUEL AND CONTROL - Fuel System (73-00-00)

- Introduction of New Fuel Manifold System

GEK 9250, Commercial Engine Standard Practices Manual (SPM)

GEK 99378, CF6-80E1 Illustrated Parts Catalog (IPC)

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 4

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

NOTE: The reference documents listed below are for the engine manufacturer's

internal use only:

BPP: 13-72-00-02

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

1153M26G15* (4) Clamp, Tube 154.00 (1) 5

1303M31G12** (1) Manifold, Fuel

Left Side

- (-) -

1303M32G12** (1) Manifold, Fuel

Right Side

- (-) -

2420M70G01 (1) Manifold, Fuel

Left Side

14,780.00 (1) 5

2420M71G01 (1) Manifold, Fuel

Right Side

12,570.00 (1) 5

*Quantity required per engine if all the block clamps are found

unserviceable after inspection.

**Refer to CF6-80E1 IPC for latest configuration. GE recommends that

fuel manifolds P/N 1303M31G12 and P/N 1303M32G12 are reworked

per CF6-80E1 S/B 73-0096 to add PTFE tape prior to use.

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

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 5

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

(3) Consumables:

Code Number Description

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

C04-002 Solvent, General (solvent)

C04-014 Solvent, General (denatured alcohol)

C04-113 Abrasive, Grit, Aluminum Oxide, 220 Mesh (aluminun

oxide)

C10-225 Tape, Silicone, Para-Aramid Fiber Cloth, PTFE Coated

(PTFE coated para-aramid tape)

C10-182 Cloth, Cleaning for Aircraft Structural (cloth)

B. Industry Support Information

None.

C. Configuration Chart

None.

D. Parts Disposition

If fuel manifolds are found unserviceable after the inspection, they can be replaced

or sent for repair to a certified repair station.

E. Tooling - Price and Availability

None.

3. ACCOMPLISHMENT INSTRUCTIONS

A. General

(1) Get access to affected fuel manifolds and inspect the epoxy wear sleeve

or PTFE coated para-aramid tape. Refer to CF6-80E1 Airbus A330 AMM,

73-11-44.

(2) Remove the four block clamps (3, Figure 1) from the fuel manifolds (1 and

2) as follows:

(a) Remove nuts (4), bolts (5), washers (6), and link brackets (7 and 8)

from the block clamps (3).

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 6

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

(b) Remove the block clamps (3) from the epoxy wear sleeve or PTFE

coated para-aramid tape. The epoxy wear sleeve or PTFE coated

para-aramid tape location is between the block clamps (3) and fuel

manifolds (1 and 2).

(3) Do an inspection for serviceability of the block clamps (3). Refer to Table 1

and Figure 2 for block clamp wear examples.

NOTE: If chafing is found during the fuel manifold inspection, complete

inspection report. Refer to paragraph 3.B., Fuel Manifold Chafing

Inspection Report.

Table 1 - Block Clamp Inspection Criteria and Action

Condition Maximum Serviceable

Limit

Corrective Action

Cracks or pieces missing Not serviceable Replace the block clamp

Nicks or gouges 0.010 inch (0.25 mm) in

depth if not on clamping

surface. Not permitted on

clamping surface.

Replace the block clamp

Scratches 0.005 inch (0.13 mm)

in depth if not on the

clamping surface. Not

permitted on clamping

surface.

Replace the block clamp

Loose or loss of clamping

ability

Not serviceable Replace the block clamp

Loose or missing rivet Not serviceable Replace the block clamp

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 7

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

(4) Do an inspection of the epoxy sleeve areas. Refer to Table 2.

Table 2 - Epoxy Sleeve Inspection Criteria and Action

Condition Maximum Serviceable

Limit

Corrective Action

(a) Visual evidence of

unbonded areas

between the epoxy

wear sleeve and the

fuel manifold is not

permitted.

(b) Epoxy wear that is

more than 0.005

inch (0.13 mm) in

depth and more

than 30 percent of

the surface area is

not permitted.

Epoxy sleeve has no

visual evidence of

damage and it is within

serviceable limits.

Refer to CF6-80E1

Airbus A330 AMM,

73-11-44, Manifold

- Fuel Supply Line

- Inspection/Check

(epoxy wear-sleeve

inspection criteria).

(c) Epoxy chipped

areas more than

20 percent of the

sleeve area is not

permitted.

No corrective action.

Continue with the installation of serviceable block

clamps (3, Figure 1). Proceed to paragraph

3.A.(6).

(a) Visual evidence of

unbonded areas

between the epoxy

wear sleeve and the

fuel manifold is not

permitted.

Repair the epoxy sleeve. Proceed to paragraph

3.A.(5).

(b) Epoxy wear that is

more than 0.005

inch (0.13 mm) in

depth and more

than 30 percent of

the surface area is

not permitted.

NOTE: After fuel manifold repair

using para-aramid tape per

the aforementioned AMM

instructions, repaired fuel

manifold can continue in

service up to 7,500 flight

hours.

Epoxy sleeve has

visual evidence of

damage and it is out

of serviceable limits.

Refer to CF6-80E1

Airbus A330 AMM,

73-11-44, Manifold

- Fuel Supply Line

- Inspection/Check

(epoxy wear-sleeve

inspection criteria).

(c) Epoxy chipped

areas more than

20 percent of the

sleeve area is not

permitted.

Epoxy sleeve wear

through to parent metal

of the fuel manifolds.

See paragraph

(4.1).(f).3.

Remove the epoxy sleeve and inspect the fuel

manifolds:

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 8

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

Condition Maximum Serviceable

Limit

Corrective Action

(4.1) Do a general inspection to the parent metal

of the fuel manifolds (1 and 2, Figure 1) as

follows:

WARNING: REFER TO THE PRODUCT

LABEL AND THE

MANUFACTURER’S

(MATERIAL) SAFETY

DATA SHEET FOR

INSTRUCTIONS ON THE

HAZARDS, STORAGE,

SAFE HANDLING AND

PROPER USE OF THIS

PRODUCT.

(a) Clean the outer surface of the epoxy

sleeve with MEK (C04-001) or solvent

(C04-002).

(b) Let the cleaned surfaces air dry.

(c) Lightly sand the surface to remove the

glossy surface of the existing composite

or resin surface with aluminum oxide

(C04-113) or its equivalent.

(d) Remove the remaining dust with a cloth

(C10-182).

(e) Clean the surface with a clean cloth

made of moist with denatured alcohol

(C04-014) or its equivalent, until the last

clean cloth wipes clean.

(f) Do a visual inspection of the fuel

manifolds (1 and 2) with a bright light at

all block clamps (3) places. If the fuel

manifolds (1 and 2) have any sign of

wear, measure the tube as follows or

with an equivalent method that can find

decreased wall thickness:

1 Measure the outside diameter

of the tube adjacent to the worn

area. Record the indication.

2 Measure the outside diameter of

the tube in the worn area, find

the smallest diameter. Record

the indication.

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 9

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

Condition Maximum Serviceable

Limit

Corrective Action

Subtract the worn area indication

recorded in step 3.A.(4.1)(f)2

from the undamaged area

indication recorded in step

3.A.(4.1)(f)1 and do as follows:

a A fuel manifold with wear

that is less than or equal to

0.0035 inch (0.089 mm) can

continue its operation until

the next inspection. Proceed

to paragraph 3.A.(5).

b A fuel manifold with wear

that is more than 0.0035

inch (0.089 mm) but less

than or equal to 0.010 inch

(0.25 mm) can continue

its operation for another

50 cycles before the fuel

manifolds have to be

replaced. Proceed to

paragraph 3.A.(5).

For fuel manifold removal

and installation, refer to

CF6-80E1 Airbus A330

AMM, 73-11-44, Manifold

- Fuel Supply Line -

Removal/Installation.

3

c A fuel manifold with

wear that is more than

0.010 inch (0.25 mm) is

unserviceable and must

be replaced immediately.

For fuel manifold removal

and installation, refer to

CF6-80E1 Airbus A330

AMM, 73-11-44, Manifold

- Fuel Supply Line -

Removal/Installation.

(5) Remove the epoxy material from the fuel manifolds (refer to instructions of

Table 2 paragraph 4.1) and apply PTFE coated para-aramid tape (C10-225)

to serviceable fuel manifolds (1 and 2, Figure 1). Refer to CF6-80E1 Airbus

A330 AMM, 73-11-44, Manifold - Fuel Supply Line - Inspection/Check.

(6) Install the four block clamps (3, Figure 1) on the fuel manifolds (1 and 2) with

the nuts (4), bolts (5), washers (6), and link brackets (7 and 8). Torque the

nuts (4) to 33-37 lb in. (3.7-4.2 N·m).

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 10

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

(7) Close access to the affected fuel manifolds (1 and 2). Refer to CF6-80E1

Airbus A330 AMM, 73-11-44.

B. Fuel Manifold Chafing Inspection Report

(1) If chafing is found during the fuel manifold inspection, please send the

following information to AOC at 513-552-3272 or email to geae.aoc@ge.com

to the attention of the hardware owner.

Fuel Manifold (Left Side)

Part Number

Fuel Manifold (Right

Side) Part Number

Engine Serial Number

Engine Time Since New

OR

Engine Time Since Last

Shop Visit

Engine Cycle Since New

OR

Engine Cycle Since Last

Shop Visit

Chafing location

Block clamp replaced

(unserviceable)

Yes No

Event Result

(Leak/Chafing - include

depth)

C. Repair of the Fuel Manifolds that Have PTFE Coated Para-Aramid Tape (C10-225)

at the Block Clamp Locations

(1) If the fuel manifolds (1 and 2, Figure 1) have been previously repaired with

PTFE coated para-aramid tape (C10-225) at the block clamp (3) locations,

inspect the fuel manifolds (1 and 2) and block clamps (3) as follows:

(a) Remove the four block clamps (3) from the fuel manifolds (1 and 2).

Refer to paragraph 3.A.(2).

(b) Do an inspection for serviceability of the block clamps (3). Refer to

paragraph 3.A.(3).

(2) Inspect the PTFE coated para-aramid tape (C10-225) at the fuel manifolds (1

and 2). Refer to Figure 3 and as follows:

(a) No chafing, scratches, nicks, or tears on the PTFE coated para-aramid

tape (C10-225) are permitted.

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 11

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

(b) No more than one depression because of block clamp (3, Figure 1)

force is permitted.

CAUTION: IF ANY DAMAGE IS FOUND ON THE PARENT METAL OF

THE FUEL MANIFOLDS (1 AND 2, FIGURE 1). FOLLOW THE

CRITERIA OF TABLE 2 PARAGRAPH 4.1.

(c) If you see the conditions described in paragraphs 3.C.(2)(a) and

3.C.(2)(b) in the PTFE coated para-aramid tape (C10-225), replace the

damaged PTFE coated para-aramid tape (C10-225) with new PTFE

coated para-aramid tape (C10-225) to serviceable fuel manifolds (1 and

2) as specified in CF6-80E1 Airbus A330 AMM, 73-11-44.

NOTE: If you add new PTFE coated para-aramid tape (C10-225), the

repaired fuel manifolds (1 and 2, Figure 1) can continue for

another 7,500 flight hours.

(d) Install serviceable block clamps (3) on the fuel manifolds (1 and 2).

Refer to paragraph 3.A.(6).

(3) Close access to affected fuel manifolds (1 and 2). Refer to CF6-80E1 Airbus

A330 AMM, 73-11-44.

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 12

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

Block Clamp and Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Location

Figure 1, ( Sheet 1 of 2 )

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 13

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

Block Clamp and Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Location

Figure 1, ( Sheet 2 )

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 14

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

Block Clamp and Epoxy Sleeve Wear Examples (Not Serviceable Condition)

Figure 2

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 15

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL - Fuel System (73-00-00) - Inspection of the Block Clamps and

Epoxy Wear Sleeve/PTFE Coated Para-Aramid Tape Areas in the Fuel Manifolds

PTFE Coated Para-Aramid Tape Application

Figure 3

July 02, 2013 CF6-80E1 S/B 73-0121

Revision 01, FINAL REVIEW COPY PAGE 16

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.