Visual Inspection of the Flow Path Panel [CFML]

TASK 72-21-01-210-802-A
Visual Inspection of the Flow Path Panel

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 the criteria for the visual inspection of the flow path panel.

NOTE: The inspection criteria below are applicable after the removal of the 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	1	MAT - PROTECTIVE
No specific	AR	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 72-21-01-000-802-A	Removal of the FlowPath Panel
TASK 72-21-01-400-802-A	Installation of the FlowPath Panel
Flow Path Panel

3. Job Set-up
Subtask 72-21-01-941-057-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).
(3) Put an ACCESS PLATFORM 1M(3 FT) in position.
(4) Install a MAT - PROTECTIVE in the lower half of the inlet cowl.

4. Procedure
Subtask 72-21-01-210-051-A

A. Visual Inspection of the Flow Path Panel

Flow Path Panel

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Visual inspection of the visible outer surface (this does not include extracting holes (4), borescope passthrough holes (2) and draining holes (3)):
A.Contact marks	Any number up to 0.0008 in. (0.02 mm) in depth.
B.Dents, Nicks	Any number up to 0.012 in. (0.3 mm) in depth.
C.Scratches	Any number up to 0.012 in. (0.3 mm) in depth.
D.Cracks, tears	Not serviceable	Replace the flow path panel (1) (Ref. AMM TASK 72-21-01-000-802) and (Ref. AMM TASK 72-21-01-400-802).
E.Missing surface coating (sulfuric anodization)	Not more than ten per cent of total surface
F.Erosion of parent metal	Not serviceable	Replace the flow path panel (1) (Ref. AMM TASK 72-21-01-000-802) and (Ref. AMM TASK 72-21-01-400-802).
2.Visual inspection of the extracting holes (4), borescope passthrough holes (2), draining holes (3)
A.Contact marks	Any number
B.Missing surface coating (sulfuric anodization)	Any amount
C.Dents, Nicks	Any number up to 0.012 in. (0.3 mm) in depth.
D.Scratches	Any number up to 0.012 in. (0.3 mm) in depth.
3.Visual examination of the seal (5)
A.Missing material, cutting, wear, folding	Up to 15 percent of the initial length.
B.Missing seal, cutting, wear, folding	Cumulative length up to 15 percent of the circumference (bonded seal more than 114.33 in. (2.90 m)).
C.Disbonding of partial section	Any amount all along the circumference.
D.Disbonding of the total section	Up to 15 percent in cumulative length all (bonded seal more than 114.33 in. (2.90 m)).
4.Visual examination of the central shoulder (6)
A.Cracks, tears	Not serviceable.
B.Missing of surface coating (sulfuric anodization)	Up to 10 percent of the total area.
C.Erosion of parent metal	Not serviceable.
D.Contact marks	Any amount.
E.Nicks, dents	Any number up to 0.0011 in. (0.03 mm) in depth.
F.Scratches	Any number up to 0.0011 in. (0.03 mm) in depth.

5. Close-up
Subtask 72-21-01-410-053-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the MAT - PROTECTIVE from the lower half of the inlet cowl.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:03:36 UTC