General Visual Inspection of the Beams Track Liners and Transcowl Sliders [CFML]

TASK 78-32-51-210-803-A
General Visual Inspection of the Beams Track Liners and Transcowl Sliders

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
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
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
Beams Track Liners and Transcowl Sliders

3. Job Set-up
Subtask 78-32-51-941-063-A

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 a 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 78-32-51-010-077-A

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) in position.

Subtask 78-32-51-040-064-A

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 78-32-51-010-078-A

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

4. Procedure
Subtask 78-32-51-210-062-A

A. General Visual Inspection (GVI) of Beams Track Liners and Transcowl Sliders

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

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

(1) Make sure that the area is sufficiently clean to do the inspection satisfactorily at the specified inspection standards.
(2) Do the visual inspection of the translating cowl upper primary slider (1) and upper beam primary track liner (2).
(a) Make sure that there are no signs of damage (unusual wear).
1 If you find damage, contact SAFRAN Nacelles.
(3) Do the visual inspection of the translating cowl upper secondary slider (3) and upper structure secondary track liner (4).
(a) Visual inspection of the upper structure secondary track liner (4) on the translating cowl upper secondary slider (3):
1 The Teflon upper structure secondary track liner (4) must be in its position attached to the translating cowl upper secondary slider (3).
2 Make sure that the upper structure secondary liner (4) is not missing or disconnected from translating cowl upper secondary slider (3).
3 If you find damage, contact SAFRAN Nacelles.
(b) Visual inspection of the upper beam secondary track (9):
1 Make sure that there are no signs of damage (unusual wear).
a If you find damage, contact SAFRAN Nacelles.
(4) Do the visual inspection of the translating cowl lower primary slider (5) and lower beam primary track liner (6).
(a) Make sure that there are no signs of damage (unusual wear).
1 If you find damage, contact SAFRAN Nacelles.
(5) Do the visual inspection of the translating cowl lower secondary slider (7) and lower beam secondary track liner (8).
(a) Make sure that there are no signs of damage (unusual wear).
1 If you find damage, contact SAFRAN Nacelles.

5. Close-up
Subtask 78-32-51-410-059-A

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 78-32-51-440-060-A

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

Subtask 78-32-51-410-058-A

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.10 from 2021] 2026.04.01 03:36:28 UTC