General Visual Inspection (GVI) of the Engine Inlet Area [PW11]

TASK 72-00-00-210-813-A
General Visual Inspection (GVI) of the Engine Inlet Area

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

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

ZONE: 400

1. Reason for the Job
Use this procedure to do a General Visual Inspection (GVI) of the engine inlet area with a white light. This inspection is for the fan rotor assembly, the inside of the fan case and the fan exit fairing (splitter area). If you see damage inside the inlet area, this procedure will reference you to a more Detailed Visual Inspection (DVI) for limits and dispositions. Do not use this inspection if you think that the engine had a Foreign Object Damage (FOD) event or birdstrike event. If you think the engine had these events, refer to task AMM 72-00-00-210-807.
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	FLASHLIGHT
No specific	1	MAT - PROTECTIVE
636-1100-3GSE	1	INLET COWL PROTECT COVER

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P05-005)	wipe, lint-free
(Material No.P11-014)	alcohol, isopropyl
(Material No.P11-049)	cleaner, aqueous
(Material No.P11-078)	alcohol, isopropyl

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 70-27-00-910-804-A	SPOP 208 - Degreasing of Parts by Solvent Wiping
TASK 70-27-00-910-805-A	SPOP 209 - Degreasing of Parts by Aqueous Cleaning
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 72-11-01-220-801-A	Detailed Visual Inspection of the Inlet Cone
TASK 72-11-03-220-802-A	Visual Inspection of the Fan Blades Surface
TASK 72-21-01-210-801-A	Detailed Visual Inspection (DVI) of the Fan Case Front Acoustic Liner Segment
TASK 72-21-01-220-801-A	Detailed Visual Inspection (DVI) of the Fan Case Rear Acoustic Liner Segment
TASK 72-21-01-220-802-A	Detailed Visual Inspection (DVI) of the Fan Case Rubstrip
TASK 72-21-01-220-803-A	Detailed Visual Inspection (DVI) of the Fan Case Ice Liner Panel Segments
TASK 72-21-02-220-801-A	Detailed Visual Inspection (DVI) of the Fan Exit Guide Vanes (FEGV)
TASK 72-21-02-220-803-A	Detailed Visual Inspection (DVI) of the Outer Structural Guide Vane Liner
TASK 72-21-04-210-801-A	General Visual Inspection (GVI) of the Fan Exit Fairing (Upper BiFi)
TASK 72-21-06-220-801-A	Detailed Visual Inspection (DVI) of the Fan Exit Fairing (Splitter)
TASK 72-21-07-220-801-A	Detailed Visual Inspection (DVI) of the Fan Exit Stator
TASK 72-21-12-220-801-A	Detailed Visual Inspection (DVI) of the Stator Guide Vane (SGV) Inner Liner
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
Engine Inlet Area - (Fan Rotor Parts)
Engine Inlet Area - Fan Exit Fairing Assembly (Upper BiFi)
Engine Inlet Area - (Fan Case Parts)

3. Job Set-up
Subtask 72-00-00-941-181-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 72-00-00-010-263-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(2) Put an ACCESS PLATFORM 2M (6 FT) in position.

Subtask 72-00-00-040-131-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser 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 maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 72-00-00-010-264-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 72-00-00-210-162-A ** ON A/C NOT FOR ALL

A. General Visual Inspection (GVI) of the Engine Inlet Area
(1) Put the 636-1100-3GSE INLET COWL PROTECT COVER or the MAT - PROTECTIVE in the inlet cowl.
(2) Do a visual inspection of the fan rotor assembly with the FLASHLIGHT as follows (see Table 1 for specific types of damage and dispositions):

Engine Inlet Area - (Fan Rotor Parts) ** ON A/C NOT FOR ALL

(a) Do a GVI of the fan blades (20 locations).
(b) Do a GVI of the inlet cone (front and rear segments).

EXAMINE	DAMAGE	DISPOSITION
Fan blades (20 locations)	Foreign Object Damage (FOD), nicks, dents, tears, cracks or missing material	Do the following visual inspections (Ref. AMM TASK 72-11-03-220-802).
Inlet cone (front and rear segments)	FOD, dents, cracks or delamination	Do the following visual inspections (Ref. AMM TASK 72-11-01-220-801).
	Oil streaks from the vent holes (dry)	Wipe the marks with the P05-005wipe, lint-free and the P11-014alcohol, isopropyl or the P11-078alcohol, isopropyl by SPOP 208 (Ref. AMM TASK 70-27-00-910-804) or with the P11-049cleaner, aqueous by SPOP 209 (Ref. AMM TASK 70-27-00-910-805).
	Oil streaks from the vent holes (wet)	Wipe all marks with the P05-005wipe, lint-free and the P11-014alcohol, isopropyl or the P11-078alcohol, isopropyl by SPOP 208 (Ref. AMM TASK 70-27-00-910-804) or with the P11-049cleaner, aqueous by SPOP 209 (Ref. AMM TASK 70-27-00-910-805). Do a DVI of the inlet cone (Ref. AMM TASK 72-11-01-220-801).

Table - Fan Rotor Parts - Visual Inspection

(3) Do a visual inspection of the fan case assembly with the FLASHLIGHT as follows (refer to Table 2 for specific types of damage and dispositions):

Engine Inlet Area - Fan Exit Fairing Assembly (Upper BiFi) ** ON A/C NOT FOR ALL

Engine Inlet Area - (Fan Case Parts) ** ON A/C NOT FOR ALL

(a) Do a GVI of the fan case front acoustic liner segments (all around forward of the fan blades).
(b) Do a GVI of the fan case rubstrip segments (all around the fan blade tips).
(c) Do a GVI of the fan case ice liner (all around rear of the fan blades).
(d) Do a GVI of the fan case rear acoustic liner segments (all around rear of the ice liner).
(e) Do a GVI of the fan exit stator (all around rear of the fan blades at the engine core inlet).
(f) Do a GVI of the fan exit fairing (splitter) (all around rear of the fan blades at the engine core inlet).
(g) Do a GVI of the Structural Guide Vanes (SGVs) (all around rear of the fan blades).
(h) Do a GVI of the fan exit fairing assembly (upper bifi).
(i) Do a GVI of the inner SGV liner segments (all around the inner diameter of the SGVs).
(j) Do a GVI of the outer SGV liner segments (all around the outer diameter of the SGVs).

EXAMINE	DAMAGE	DISPOSITION
Fan case front acoustic liner segments	FOD, dents, cracks, delamination or missing material	Do the following visual inspections (Ref. AMM TASK 72-21-01-210-801).
Fan case rubstrip segments	FOD, delamination or missing material	Do the following visual inspections (Ref. AMM TASK 72-21-01-220-802).
Fan case ice liner	FOD, dents, cracks, delamination or missing material	Do the following visual inspections (Ref. AMM TASK 72-21-01-220-803).
Fan case rear acoustic liner segments	FOD, dents, cracks, delamination or missing material	Do the following visual inspections (Ref. AMM TASK 72-21-01-220-801).
Fan exit stator	FOD, nicks, dents, tears, cracks or missing material	Do the following visual inspections (Ref. AMM TASK 72-21-07-220-801).
Fan exit fairing (splitter)	FOD, dents, cracks or scratches. Missing attachment screws.	Do the following visual inspections (Ref. AMM TASK 72-21-06-220-801).
SGVs	FOD, nicks, dents, tears, cracks or missing material	Do the following visual inspections (Ref. AMM TASK 72-21-02-220-801).
Fan exit fairing assembly (upper bifi)	FOD, nicks, dents, tears, cracks, loose or missing attachment bolts, missing rubber seals or missing coat	Do the following visual inspections (Ref. AMM TASK 72-21-04-210-801).
Inner SGV liner segments	FOD, cracks, nicks, dents, scratches, surface erosion, punctures, holes or missing material and damage to rubber fillet.	Do the following visual inspections (Ref. AMM TASK 72-21-12-220-801).
Outer SGV liner segments	FOD, missing liners, cracks, nicks, dents, scratches, surface erosion, punctures, holes or missing material and damage to rubber fillet.	Do the following visual inspections (Ref. AMM TASK 72-21-02-220-803).

Table - Fan Case Parts - Visual Inspection

(4) Remove the MAT - PROTECTIVE or the 636-1100-3GSE INLET COWL PROTECT COVER from the inlet cowl.
(5) Examine the assembly for foreign objects, damage and correct assembly.

5. Close-up
Subtask 72-00-00-410-225-A ** ON A/C NOT FOR ALL

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 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.

Subtask 72-00-00-440-125-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 72-00-00-410-226-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Remove the access platform(s).
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 04:14:15 UTC