Detailed Inspection of the Thrust Reverser, Aft Frame to Beam Junctions [CFML]

TASK 78-32-00-220-804-A
Detailed Inspection of the Thrust Reverser, Aft Frame to Beam Junctions

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

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.

ZONE: 400

1. Reason for the Job
Refer to the MPD TASK: 783225-01
DETAILED INSPECTION OF THRUST REVERSER, AFT FRAME TO BEAM JUNCTIONS.
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	MAGNIFYING GLASS POWER 10X
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CPNCL02069)	LINT-FREE COTTON CLOTH
(Material No.CPNCL02589)	GENERAL CLEANING AGENT - MULTI PURPOSE

C. Work Zones and Access Panels

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

D. 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
NSRM 543054
NSRM 543055
Detailed Inspection of the Thrust Reverser, Aft Frame to Beam Junctions

3. Job Set-up
Subtask 78-32-00-941-118-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 78-32-00-010-175-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

Subtask 78-32-00-040-117-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 78-32-00-010-177-A

D. Get Access
(1) Manually deploy the translating cowl (Ref. AMM TASK 78-32-50-010-801).
(2) Put an ACCESS PLATFORM 2M (6 FT) in position.

4. Procedure
Subtask 78-32-00-220-059-A

A. Detailed Inspection of the Thrust Reverser, Aft Frame to Beam Junctions

Detailed Inspection of the Thrust Reverser, Aft Frame to Beam Junctions

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

NOTE: You can use the MAGNIFYING GLASS POWER 10X and the LIGHT SOURCE - HIGHPOWER.

(1) Make sure that the inspection area is sufficiently clean to do the inspection satisfactorily as per the specified inspection standards.
(2) Clean the inspection area with the GENERAL CLEANING AGENT - MULTI PURPOSE (Material No.CPNCL02589) and a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) , if necessary.
(3) Do the detailed inspection of the left upper aft frame (1) to the beam junction:
(a) Do the detailed inspection of the 12 o'clock beam (2).
(b) Make sure that there are no signs of corrosion damage:
1 If you find signs of corrosion damage, contact SAFRAN Nacelles.
(c) Make sure that there are no signs of other damage (cracks, nicks, scratches, gouges, marks or dents):
1 If you find signs of damage (nicks, scratches, gouges or edge dents), refer to NSRM 543054.
2 If you find signs of damage (cracks, marks or dents), contact SAFRAN Nacelles.
(4) Do the detailed inspection of the left lower aft frame (1) to the beam junction:
(a) Do the detailed inspection of the 6 o'clock beam (3).
(b) Make sure that there are no signs of corrosion damage:
1 If you find signs of corrosion damage, contact SAFRAN Nacelles.
(c) Make sure that there are no signs of other damage (cracks, nicks, scratches, gouges, marks or dents):
1 If you find signs of damage (nicks, scratches, gouges or edge dents), refer to NSRM 543055.
2 If you find signs of damage (cracks, marks or dents), contact SAFRAN Nacelles.

5. Close-up
Subtask 78-32-00-410-167-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 78-32-00-440-109-A

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

Subtask 78-32-00-410-164-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 03:35:42 UTC