Installation of the Captain (First Officer) Seat-Headrest Assy

TASK 25-11-64-400-001-A
Installation of the Captain (First Officer) Seat-Headrest Assy

ZONE: 211
ZONE: 212

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 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
Captain (First Officer) Seat-Headrest Assy

3. Job Set-up
Subtask 25-11-64-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).

4. Procedure
Subtask 25-11-64-420-050-A

A. Installation of the Captain (First Officer) Seat-Headrest Assy
(1) Clean the component interfaces and the adjacent area.
(2) Put the lower strap guide (10) in position on the harness support (11).
(3) Put the two inserts (9) in position on the lower strap guide (10).
(4) Put the upper strap guide (8) in position and install the three screws (12), the washers (13) and the reinforcement fitting (14).
(5) Tighten the three screws (12).
(6) Install the headrest clips (7) on the upper strap guide (8).
(7) Push the lumbar rest control-knobs (3) to install them.
(8) Install the retainer rings (2).
(9) Put the upper back shroud (4) of the backrest in position on the seat (1) and install the fourteen screws (5).
(10) Tighten the fourteen screws (5).
(11) Put the headrest (6) in position in the guides of the seat (1) and push it in.
(12) Make sure it is only necessary to push or pull the headrest (6) to adjust it to the correct position (up, down or reclined).

5. Close-up
Subtask 25-11-64-862-050-A

A. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:28:16 UTC