General Check of the Power Plant Flexible Fuel Tubes [IAE]

TASK 73-11-48-200-010-A
General Check of the Power Plant Flexible Fuel Tubes

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
This task gives the procedure for a general check of the power plant flexible fuel tubes without component removal.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	LIGHT SOURCE - INSPECTION
No specific	AR	MIRROR - INSPECTION
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-002)	cleaning fluid
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
Power-Plant Flexible-Fuel-Hoses

3. Job Set-up
Subtask 73-11-48-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 73-11-48-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position

Subtask 73-11-48-110-050-A ** ON A/C NOT FOR ALL

C. Clean the fuel tubes
(1) Clean the flexible fuel hoses

Power-Plant Flexible-Fuel-Hoses ** ON A/C NOT FOR ALL

(2) Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with cleaning fluid (Material No.V01-002) to clean the flexible fuel hoses (1) and (2).
(3) Dry the fuel tubes with a clean Textile-Lint free Cotton - (Material No.14SBA1) .

4. Procedure
Subtask 73-11-48-210-050-A ** ON A/C NOT FOR ALL

A. Examine the flexible fuel hoses with the LIGHT SOURCE - INSPECTION and MIRROR - INSPECTION
(1) Examine the fuel hoses (1) and (2) for security of attachment
(a) If the fuel hoses are loose, examine these items for damage, wear and loss of torque:
1 The attachment bolts.
2 The attachment clips.
3 The lockwire that safeties the connectors.
4 The union nuts and the unions.
(b) If one (some) of the items has (have) damage or wear, reject it (them).
(2) Examine the flexible fuel hoses (1) and (2) connections for leaks. Leaks are not permitted
(a) If leaks are found:
1 Examine the attachment bolts and the union nuts for loss of torque.
2 If there is a loss of torque, examine the attachment bolts and the union nuts for damage and wear.
3 If damage or wear is found reject it (them).
(3) Examine the general condition of the flexible fuel hoses (1) and (2)
(a) Examine the fuel hoses for cracks, breaks or damage
1 If the tube(s) has (have) cracks, reject it (them).
2 If the tube(s) has (have) damage or breaks, reject it (them).

5. Close-up
Subtask 73-11-48-410-051-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 03:00:14 UTC