General Visual Inspection of Gearbox Mounting Links and Attachment Features [IAE]

TASK 72-60-00-200-011-A
General Visual Inspection of Gearbox Mounting Links and Attachment Features

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

1. Reason for the Job
Refer to the MPD TASK: 726000-I1
TBD
This task gives the procedure for the general inspection of the external gearbox
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

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

C. 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)
External Gearbox Module

3. Job Set-up
Subtask 72-60-00-941-053-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 72-60-00-010-056-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.

4. Procedure
Subtask 72-60-00-210-050-A ** ON A/C NOT FOR ALL

A. Visual Inspect of the Gearbox Mounting Links and Attachment Features:
(1) Visually examine the front attachment parts on the external gearbox.
(a) Examine the three front links and the spherical bearings. If they are cracked or distored, reject them.
(b) Examine the area of the front pins that you can see. If they are cracked or distored, reject them.
(2) Visually examine the rear attachment parts on the external gearbox.
(a) Examine the rear link and the spherical bearings. If they are cracked or distored, reject the link.
(b) Examine the area of the rear pin that you can see. If they are cracked or distored, reject it.
(3) Visually examine the external gearbox
(a) Examine the external gearbox for oil leaks from the accessory mounting pads.
(b) Examine the oil tubes for leaks and loose connections.

5. Close-up
Subtask 72-60-00-410-058-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):
(3) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(4) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(5) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:46:45 UTC