Removal of the PPU Adaptor Plate

TASK 27-81-42-000-001-A
Removal of the PPU Adaptor Plate

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.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

FIN: 6048CM
FIN: 6098CM

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

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 4M (13 FT)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [6048CM] (SLAT APPU ADAPTER)
522UB
FOR [6098CM] (SLAT APPU ADAPTER)
622UB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 27-80-00-866-005-A	Retracting the Slats on the Ground
TASK 27-81-18-000-001-A	Removal of the Asymmetry-Position Pick-Off Unit
Position Pick-Off Unit Adaptor-Plate 6048CM(6098CM) ** ON A/C NOT FOR ALL
Position Pick-Off Unit Adaptor-Plate 6048CM(6098CM) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 27-81-42-941-050-A

A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.
(2) Put the WARNING NOTICE(S) in position to tell persons not to operate the flap/slat controls.

Subtask 27-81-42-860-050-A

B. Aircraft Maintenance Configuration
(1) Make sure that the slats are fully retracted (Ref. AMM TASK 27-80-00-866-005).
(2) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is installed on the flap/slat control lever on the panel 114VU.
(3) Remove the safety collar from the circuit breakers 9CV and 11CV.

Subtask 27-81-42-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	FLIGHT CONTROLS/WTB/SLT/SYS2	11CV	P19
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21
122VU	FLIGHT CONTROLS/WTB/SLT/SYS1	9CV	S06

Subtask 27-81-42-010-050-A

D. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT) in position:
(a) FOR [6048CM] (SLAT APPU ADAPTER)
below zone 510
(b) FOR [6098CM] (SLAT APPU ADAPTER)
below zone 610.
(2) Remove the access panels:
(a) FOR [6048CM] (SLAT APPU ADAPTER)
remove 522UB
(b) FOR [6098CM] (SLAT APPU ADAPTER)
remove 622UB.

4. Procedure
Subtask 27-81-42-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the PPU Adaptor Plate
(1) Remove the Asymmetry-Position Pick-off Unit (APPU) (Ref. AMM TASK 27-81-18-000-001).
(2) Remove the retaining ring (7) and the pin (5).
(3) Loosen the screws (2) and turn the cover plate (3) counterclockwise to get access to the nuts (4).
(4) Remove the nuts (4) from the bolts (8).
(5) Hold the slat torque-shaft and remove the PPU adaptor plate (1) together with the cover plate (3).
(6) Remove the bolts (8) and the locking ring (6).

Subtask 27-81-42-020-051-B ** ON A/C NOT FOR ALL

A. Removal of the PPU Adaptor Plate
(1) Remove the Asymmetry-Position Pick-off Unit (APPU) (Ref. AMM TASK 27-81-18-000-001).
(2) Remove the retaining ring (5) and the pin (3).
(3) Remove the nuts (2) from the bolts (6).
(4) Hold the slat torque-shaft and remove the PPU adaptor plate (1).
(5) Remove the bolts (6) and the locking ring (4).

[Rev.10 from 2021] 2026.03.31 23:56:27 UTC