General Visual Inspection of the Transcowl Snubber Wear Pads and Forward Frame Transcowl Locators [CFML]

TASK 78-32-52-210-801-A
General Visual Inspection of the Transcowl Snubber Wear Pads and Forward Frame Transcowl Locators

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.

1. Reason for the Job
Refer to the MPD TASK: 783200-L8
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	LIGHT SOURCE - HIGHPOWER
No specific	1	MIRROR - INSPECTION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-807-A	Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
TASK 78-30-00-440-807-A	Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU)
TASK 78-32-50-010-801-A	Manually Deploy the Translating Cowl
TASK 78-32-50-410-801-A	Manually Stow the Translating Cowl
Transcowl Snubber Wear Pads and Forward Frame Transcowl Locators

3. Job Set-up
Subtask 78-32-52-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 78-32-52-010-053-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 78-32-52-040-052-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser System for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for nacelle maintenance (Ref. AMM TASK 78-30-00-040-807).

Subtask 78-32-52-010-054-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Manually deploy the translating cowl (Ref. AMM TASK 78-32-50-010-801).

4. Procedure
Subtask 78-32-52-210-050-A ** ON A/C NOT FOR ALL

A. General Visual Inspection of the Transcowl Snubber Wear Pads and Forward Frame Transcowl Locators

NOTE: This procedure is given for the left thrust reverser. It is also applicable to the right thrust reverser.

NOTE: You can use an MIRROR - INSPECTION and a LIGHT SOURCE - HIGHPOWER.

(1) Make sure that the inspection area is sufficiently clean to do the inspection satisfactorily at the specified inspection standards.
(2) Do the visual inspection of the wear pads (1) on the transcowl cowl snubbers (2):
(a) Do the visual inspection on each of the six snubbers (2) installed on each half thrust reverser.
(b) Make sure that there are no signs of:

Missing wear pads or missing pieces of a wear pad
Loose or missing fasteners that attach the wear pads to the snubbers
Wear or contact marks.

1 If damage are found, please contact Safran Nacelles.
(3) Do the visual inspection of the forward frame transcowl locators (3) and slat clearance panel locator (4):
(a) Do the visual inspection on each of the six forward frame transcowl locators (3) and one slat clearance panel locator (4) installed on each half thrust reverser.
(b) Make sure that there are no signs of:

Missing parts of a locator
Wear or contact marks.

1 If damage are found, please contact Safran Nacelles.

5. Close-up
Subtask 78-32-52-410-052-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) Manually stow the translating cowl (Ref. AMM TASK 78-32-50-410-801).

Subtask 78-32-52-440-051-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after nacelle maintenance (Ref. AMM TASK 78-30-00-440-807).

Subtask 78-32-52-410-053-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.8 from Aug 2017] 2026.04.01 03:36:29 UTC