Visual Inspection of the Fan Frame Module [CFML]

TASK 72-24-00-210-801-A
Visual Inspection of the Fan Frame Module

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
This procedure gives criteria for visual inspection of the fane frame module.

NOTE: The inspection criteria below are applicable after removal of high metal.

NOTE: You can use equivalent alternatives for standard tools, equipment and consumable materials.

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M(3 FT)
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, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR

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 72-23-01-210-801-A	Visual Inspection of the Fan Case
TASK 72-23-03-210-801-A	Visual Inspection of the Acoustic Shroud
TASK 72-23-04-210-801-A	Visual Inspection of the Aft Acoustical Panel
TASK 72-24-01-210-801-A	Visual Inspection of the Segment Shrouds and Louvers
TASK 72-24-03-210-801-A	Visual Inspection of the Strut 1
TASK 72-24-03-210-802-A	Visual Inspection of the Strut 5
TASK 72-24-03-210-803-A	Visual Inspection of Strut 6
TASK 72-24-05-210-801-A	Visual Inspection of the Hanger Fitting
TASK 72-24-06-210-801-A	Visual Inspection of the Junction Shroud Fitting
TASK 72-24-09-210-801-A	Visual Inspection of Flow Path Panels 1 to 4
TASK 72-24-10-210-801-A	Visual Inspection of the Fan Frame Shroud
TASK 72-24-11-210-801-A	Visual Inspection of the Outlet Guide Vane Platforms
TASK 72-24-20-210-801-A	Visual Inspection of the Outlet Guide Vanes (OGVs), Inter OGV Seals and OGV Plugs
TASK 72-24-21-210-801-A	Visual Inspection of the Outlet Guide Vane (OGV) Struts
TASK 72-24-80-200-801-A	Visual Inspection of the Variable Bleed Valve (VBV) Ducts in Titanium (PRE SB LEAP 72-00-0206 and/or PRE SB LEAP 72-00-0271)
TASK 72-24-80-200-801-A-01	Visual Inspection of the Variable Bleed Valve (VBV) Ducts in Composite Material Including Seals (POST SB LEAP 72-00-0206 and/or POST SB LEAP 72-00-0271)
TASK 78-30-00-040-809-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-809-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A	Closing of the Thrust Reverser Cowl Doors

3. Job Set-up
Subtask 72-24-00-941-050-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 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 72-24-00-010-050-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 1M(3 FT) in position.

Subtask 72-24-00-040-050-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 ground maintenance (Ref. AMM TASK 78-30-00-040-809).

Subtask 72-24-00-010-051-A

D. Get Access
(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR

4. Procedure
Subtask 72-24-00-420-050-A

A. Visual Inspection of the Fan Frame Module
(1) Inspect the following parts:
(a) Fan case (Ref. AMM TASK 72-23-01-210-801).
(b) Acoustic shroud (Ref. AMM TASK 72-23-03-210-801).
(c) Acoustic panel (Ref. AMM TASK 72-23-04-210-801).
(d) Segment shrouds (Ref. AMM TASK 72-24-01-210-801).
(e) Fan frame shroud (Ref. AMM TASK 72-24-10-210-801).
(f) Strut 1 (Ref. AMM TASK 72-24-03-210-801).
(g) Strut 5 (Ref. AMM TASK 72-24-03-210-802).
(h) Strut 6 (Ref. AMM TASK 72-24-03-210-803).
(i) Hanger fitting (Ref. AMM TASK 72-24-05-210-801).
(j) Junction shroud fitting (Ref. AMM TASK 72-24-06-210-801).
(k) Flow path panels 1 to 4 (Ref. AMM TASK 72-24-09-210-801).
(l) Outer Outlet Guide Vane (OGV) platform (Ref. AMM TASK 72-24-11-210-801).
(m) Outlet Guide Vane (OGV) (Ref. AMM TASK 72-24-20-210-801).
(n) OGV struts (Ref. AMM TASK 72-24-21-210-801).
(o) Variable Bleed Valve (VBV) ducts (Ref. AMM TASK 72-24-80-200-801).

5. Close-up
Subtask 72-24-00-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR

Subtask 72-24-00-440-050-A

B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-809).

Subtask 72-24-00-410-051-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 02:52:32 UTC