Removal of the Feed Back Position Pick-Off Unit

TASK 27-51-19-000-001-A
Removal of the Feed Back Position Pick-Off Unit

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

ZONE: 148
FIN: 27CV

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	TIE WRAP
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
148	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT

C. Referenced Information

REFERENCE	DESIGNATION
TASK 27-00-00-480-002-A	Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 27-50-00-866-009-A	Retraction of the Flaps on the Ground
TASK 27-50-00-866-009-A-01	Retraction of the Flaps/Slats on the Ground
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
Feedback Position Pick-Off Unit

3. Job Set-up
Subtask 27-51-19-010-050-A

A. Open the main doors of the main gear (Ref. AMM TASK 32-12-00-010-001).

Subtask 27-51-19-860-050-A

B. Aircraft Maintenance Configuration
(1) Put the ACCESS PLATFORM 3M (10 FT) in position at the opening of the main door of the main gear.
(2) Make sure that the flaps are in the fully retracted position (Ref. AMM TASK 27-50-00-866-009).
(3) Install the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION on the slat/flap control lever (Ref. AMM TASK 27-00-00-480-002).

Subtask 27-51-19-865-050-A

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C ALL
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21

4. Procedure
Subtask 27-51-19-020-050-A

A. Removal of the Feed Back Position Pick-Off Unit

NOTE: Do not remove the Feed Back Position Pick-off Unit when the Pressure-off Brakes are removed from the Power Control Unit.

(1) Remove the electrical connectors 27CV-A and 27CV-B from the Feed Back Position Pick-off Unit (FPPU).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Remove the screws (1) and the washers (2).
(4) Remove the FPPU carefully from the gearbox.
(5) Put a TIE WRAP (3) behind the locking plate to prevent the retraction of the locking plate.

[Rev.10 from 2021] 2026.04.01 06:56:38 UTC