Removal of the Captain (First Officer) Seat Lumbar-Rest

TASK 25-11-67-000-001-A
Removal of the Captain (First Officer) Seat Lumbar-Rest

ZONE: 211
ZONE: 212
FIN: 3MS
FIN: 4MS

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
211	COCKPIT
212	COCKPIT

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-11-61-000-001-A	Removal of the Captain (First Officer) Seat Cushion
Captain (First Officer) Seat Lumbar-Rest

3. Job Set-up
Subtask 25-11-67-861-050-A

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 25-11-67-010-050-A

B. Remove the Captain (First Officer) seat cushion (Ref. AMM TASK 25-11-61-000-001).

4. Procedure
Subtask 25-11-67-020-050-A

A. Removal of the Captain (First Officer) Seat Lumbar-Rest

NOTE: Make marks on all the parts before disassembly to help you and prevent errors during assembly.

(1) Remove the two retainer rings (4).
(2) Pull with force to remove the two lumbar rest control-knobs (5).
(3) Disengage the connectors (3) from the seat back structure (1).
(4) Disengage the lumbar rest (2) from the seat back structure (1).

[Rev.10 from 2021] 2026.03.31 23:28:23 UTC