GENERAL VISUAL INSPECTION OF FAN COMPARTMENT (EWIS)

TASK 05-24-30-210-802-A
GENERAL VISUAL INSPECTION OF FAN COMPARTMENT (EWIS)

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

ZONE: 435
ZONE: 436
ZONE: 445
ZONE: 446

1. Reason for the Job
Refer to the MPD TASK: ZL-435-02
GENERAL VISUAL INSPECTION OF FAN COMPARTMENT (EWIS)

NOTE: This is an EWIS (Electrical Wiring Interconnection System) procedure. EWIS is defined in ESPM 20-33-11.

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
435	FAN AND ACCESSORY GEARBOX
436	FAN AND ACCESSORY GEARBOX
445	FAN AND ACCESSORY GEARBOX
446	FAN AND ACCESSORY GEARBOX
437AL, 438AR, 447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
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
Access Door of the Left Nacelle (Left Side)
Access Panel and Door of the Left Nacelle (Right Side)
Access Panel and Door of the Right Nacelle (Right Side)
Access Door of the Right Nacelle (Left Side)

3. Job Set-up
Subtask 05-24-30-010-054-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) in position at zone 435 (445).
(2) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):

Access Door of the Left Nacelle (Left Side) ** ON A/C NOT FOR ALL

Access Panel and Door of the Left Nacelle (Right Side) ** ON A/C NOT FOR ALL

Access Panel and Door of the Right Nacelle (Right Side) ** ON A/C NOT FOR ALL

Access Door of the Right Nacelle (Left Side) ** ON A/C NOT FOR ALL

437AL 438AR 447AL and 448AR.

4. Procedure
Subtask 05-24-30-210-054-A ** ON A/C NOT FOR ALL

A. Do a general visual inspection of the fan compartment.
Make sure that:

There is no damage (corrosion, leaks or cracks) on all the parts of the components and the structure that you can see
All the installations (wiring, piping, ducting) are correctly attached.

5. Close-up
Subtask 05-24-30-410-054-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 fan cowl doors (Ref. AMM TASK 71-13-00-410-802):

Access Door of the Left Nacelle (Left Side) ** ON A/C NOT FOR ALL

Access Panel and Door of the Left Nacelle (Right Side) ** ON A/C NOT FOR ALL

Access Panel and Door of the Right Nacelle (Right Side) ** ON A/C NOT FOR ALL

Access Door of the Right Nacelle (Left Side) ** ON A/C NOT FOR ALL

437AL 438AR 447AL and 448AR.
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 22:49:56 UTC