Visual Inspection of the Outlet Guide Vane (OGV) Struts [CFML]

TASK 72-24-21-210-801-A
Visual Inspection of the Outlet Guide Vane (OGV) Struts

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 OGV (Outlet Guide Vane) struts 1, 5 and 6.

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 2M (6 FT) - ADJUSTABLE
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 72-24-20-000-801-A	Removal of the Outlet Guide Vane (OGV)
TASK 72-24-20-400-801-A	Installation of the Outlet Guide Vane (OGV)
TASK 72-24-21-300-801-A	Outlet Guide Vane, Struts 1, 5 and 6 - Blending of Leading Edge
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
Illustration of Visual Inspection of the OGV Struts

3. Job Set-up
Subtask 72-24-21-941-050-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 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 72-24-21-010-050-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 2M (6 FT) - ADJUSTABLE in position.

Subtask 72-24-21-040-050-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 72-24-21-010-051-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 72-24-21-210-050-A

A. Visual Inspection of OGV Strut 1, OGV Strut 5 and OGV Strut 6
(1) Visual examination of the inner platform fillet (except the Leading Edge (LE)) and the outer mounting flange fillet of the OGV Strut 1. See Sheet 1 of the figure.

Illustration of Visual Inspection of the OGV Struts

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Nicks, dents, scratches	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Erosion	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(2) Visual inspection of the suction side flowpath surface, except LE and fillets of the OGV strut 1 (1):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Dents, nicks, scratches	Any number up to 0.01 in. (0.25 mm) in depth
Erosion	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(3) Visual examination of the pressure side flowpath surface except LE, Trailing Edge (TE) and fillets :

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Nicks, dents, scratches	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Erosion	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(4) Visual examination of the TE pressure side flowpath surface except fillets:

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Nicks, dents, scratches	Any number, 0.0098 in. (0.25 mm) deep
Erosion	Not Serviceable
Cracks	Not Serviceable

(5) Visual inspection of the LE and the LE of the inner platform fillet of the OGV strut 1 (1):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Nicks, dents, scratches	Any number up to 0.01 in. (0.25 mm) in depth	See repair (Ref. AMM TASK 72-24-21-300-801).
Local distortion	Any number: If not over 0.0197 in. (0.50 mm) in deformation Up to 0.197 in. (5.00 mm) in length	See repair (Ref. AMM TASK 72-24-21-300-801).
Cracks and tears	Not Serviceable	See repair (Ref. AMM TASK 72-24-21-300-801).
Erosion	Not Serviceable	See repair (Ref. AMM TASK 72-24-21-300-801).

(6) Visual inspection of the inner platform flowpath surface, except fillets of the OGV strut 1 (1):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Nicks, dents, scratches	Any number up to 0.01 in. (0.25 mm) in depth
Erosion	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not Serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(7) Visual inspection of visible inserts (2) and pins (3) of the OGV strut 1 (1):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Bent, torn, worn, cut inserts (2)	Not serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Loose, missing inserts (2)	Not serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Loose, missing pins (3)	Not serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Bent, torn, worn, cut,cracked pins (3)	Not serviceable	Replace the OGV strut 1 (1) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(8) Visual inspection of the inner platform fillet (except the LE) and the outer mounting flange fillet of the OGV Strut 5 (4). See Sheet 2 of the figure:

Illustration of Visual Inspection of the OGV Struts

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Nicks, dents, scratches	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Erosion	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(9) Visual inspection of the suction side flowpath surface, except LE and fillets of the OGV strut 5 (4):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Nicks, dents, scratches	Any number up to 0.01 in. (0.25 mm) in depth
Erosion	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(10) Visual inspection of the pressure side flowpath surface, except LE and fillets of the OGV strut 5 (4):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Nicks, dents, scratches	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Erosion	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(11) Visual inspection of the LE and LE of the inner platform fillet of the OGV strut 5 (4):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Dents, nicks, scratches	Any number up to 0.01 in. (0.25 mm) in depth	See repair (Ref. AMM TASK 72-24-21-300-801).
Local distortion	Any number: If not over 0.0197 in. (0.50 mm) in deformation Up to 0.197 in. (5.00 mm) in length	See repair (Ref. AMM TASK 72-24-21-300-801).
Tears, cracks	Not serviceable	See repair (Ref. AMM TASK 72-24-21-300-801).
Erosion	Not serviceable	See repair (Ref. AMM TASK 72-24-21-300-801).

(12) Visual inspection of the inner platform flowpath surface, except fillets of the OGV strut 5 (4):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Dents, nicks, scratches	Any number up to 0.01 in. (0.25 mm) in depth
Erosion	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(13) Visual inspection of visible inserts (5) and pins (6) of the OGV strut 5 (4):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Bent, torn, worn, cut inserts (5)	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Loose, missing inserts (5)	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Loose, missing pins (6)	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Bent, torn, cut, cracked pins	Not serviceable	Replace the OGV strut 5 (4) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Fretting/wear on pins	Any amount, 0.019 in. (0.48 mm) in depth

(14) Visual inspection of the inner platform fillet (except the LE) and the outer mounting flange fillet of the OGV Strut 6 (7). See Sheet 3 of the figure:

Illustration of Visual Inspection of the OGV Struts

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Nicks, dents, scratches	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Erosion	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(15) Visual inspection of the suction side flowpath surface, except LE and fillets of the OGV strut 6 (7):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Dents, nicks, scratches	Any number up to 0.01 in. (0.25 mm) in depth
Erosion	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(16) Visual inspection of the pressure side flowpath surface, except LE and fillets of the OGV strut 6 (7):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Dents, nicks, scratches.	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Erosion	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(17) Visual inspection of the LE and LE of the inner platform fillet of the OGV strut 6 (7):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Dents, nicks, scratches	Any number up to 0.01 in. (0.25 mm) in depth	See repair (Ref. AMM TASK 72-24-21-300-801).
Local distortion	Any number: If not over 0.0197 in. (0.50 mm) in deformation Up to 0.197 in. (5.00 mm) in length	See repair (Ref. AMM TASK 72-24-21-300-801).
Tears, cracks	Not serviceable	See repair (Ref. AMM TASK 72-24-21-300-801).
Erosion	Not serviceable	See repair (Ref. AMM TASK 72-24-21-300-801).

(18) Visual inspection of the inner platform flowpath surface, except fillets of the OGV strut 6 (7):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Dents, nicks, scratches	Any number up to 0.01 in. (0.25 mm) in depth
Erosion	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Cracks	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

(19) Visual inspection of visible inserts (8) and pins (9) of the OGV strut strut 6 (7):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
Bent, torn, worn, cut inserts (8)	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Loose, missing inserts (8).	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Loose, missing pins (9)	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).
Bent, torn, worn, cut, cracked pins (9)	Not serviceable	Replace the OGV strut 6 (7) (Ref. AMM TASK 72-24-20-000-801) and (Ref. AMM TASK 72-24-20-400-801).

5. Close-up
Subtask 72-24-21-410-050-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 72-24-21-440-050-A

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

Subtask 72-24-21-410-051-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 02:53:21 UTC