DOC AIRBUS | AMM A320FInstallation of the Fourth-Occupant Seat Safety-Harness
TASK 25-11-83-400-801-A
Installation of the Fourth-Occupant Seat Safety-Harness
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 25-11-83-860-050-B
Subtask 25-11-83-420-050-B
Subtask 25-11-83-410-050-A
[Rev.10 from 2021]
2026.03.31 23:28:34 UTC
Installation of the Fourth-Occupant Seat Safety-Harness
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 211 | COCKPIT |
| 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 |
| TASK 25-11-42-000-001-A | Removal of the Fourth Occupant Seat |
| TASK 25-11-42-400-001-A | Installation of the Fourth Occupant Seat |
Fourth-Occupant Seat Safety-HarnessSubtask 25-11-83-860-050-B
A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the headrest of the fourth-occupant seat is removed (Ref. AMM TASK 25-11-42-000-001).
(3) Make sure that the bottom cushion of the fourth-occupant seat is removed.
4. Procedure(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the headrest of the fourth-occupant seat is removed (Ref. AMM TASK 25-11-42-000-001).
(3) Make sure that the bottom cushion of the fourth-occupant seat is removed.
Subtask 25-11-83-420-050-B
A. Installation of the Fourth-Occupant Seat Safety-Harness
(1) If necessary, open the seat (12) and put the SHIM - WOODEN to hold it in this open position.
(2) Clean the component interfaces and the adjacent area.
(3) Put the reel assembly (1) in position.
(4) Install the screws (2) and tighten them.
(5) Connect the cable (3).
(6) Put the lap strap buckles (4) in position.
(7) Install the pins (6) and the circlips (5).
(8) Put the shim (7) in position on the seat (12).
(9) Put the crotch strap (10) in position above the shim (7).
(10) Put the clip (8) in position above the crotch strap (10).
(11) Install the screws (9) and tighten them.
(12) Put the crotch strap (10) through the slot of the bottom cushion (11).
(13) Put the bottom cushion (11) in position on the seat (12).
5. Close-up(1) If necessary, open the seat (12) and put the SHIM - WOODEN to hold it in this open position.
(2) Clean the component interfaces and the adjacent area.
(3) Put the reel assembly (1) in position.
(4) Install the screws (2) and tighten them.
(5) Connect the cable (3).
(6) Put the lap strap buckles (4) in position.
(7) Install the pins (6) and the circlips (5).
(8) Put the shim (7) in position on the seat (12).
(9) Put the crotch strap (10) in position above the shim (7).
(10) Put the clip (8) in position above the crotch strap (10).
(11) Install the screws (9) and tighten them.
(12) Put the crotch strap (10) through the slot of the bottom cushion (11).
(13) Put the bottom cushion (11) in position on the seat (12).
NOTE: To install the bottom cushion, it is necessary to find the position of the Velcro tapes.
(14) Push the bottom cushion (11) to attach it to the Velcro tapes. Subtask 25-11-83-410-050-A
A. Installation of the Seat Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the headrest on the fourth-occupant seat (Ref. AMM TASK 25-11-42-400-001).
Subtask 25-11-83-862-050-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the headrest on the fourth-occupant seat (Ref. AMM TASK 25-11-42-400-001).