DOC AIRBUS | AMM A320FDetailed Inspection of Igniter Plugs (APS 3200)
TASK 49-41-41-220-802-A
Detailed Inspection of Igniter Plugs (APS 3200)
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 49-41-41-020-058-A ** ON A/C NOT FOR ALL 4. Procedure
Subtask 49-41-41-210-054-A ** ON A/C NOT FOR ALL
Subtask 49-41-41-420-058-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:30:15 UTC
Detailed Inspection of Igniter Plugs (APS 3200)
WARNING:
DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING:
DISCONNECT THE LOW-TENSION ELECTRICAL SUPPLY 6 MINUTES BEFORE YOU START WORK ON THE IGNITION SYSTEM.
THE HIGH CURRENT AND VOLTAGE WHICH ARE USED IN THE IGNITION SYSTEM CAN KILL YOU.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 315 | TAIL CONE APU AND ACCESSORY COMPARTMENT |
| 316 | TAIL CONE APU AND ACCESSORY COMPARTMENT |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 49-41-41-000-003-A | Removal of the Igniter Plug(s) (APS 3200) |
| TASK 49-41-41-400-002-A | Installation of the Igniter Plug(s) (APS 3200) |
Igniter Plugs Wear and Erosion Limits (APS 3200)Subtask 49-41-41-020-058-A ** ON A/C NOT FOR ALL 4. Procedure
Subtask 49-41-41-210-054-A ** ON A/C NOT FOR ALL
A. Inspect the Igniter Plug(s).
(2) Examine the igniter plug(s) for internal wear and damage.
(3) Examine the outer casing for spark erosion. If the erosion is greater than 5.537 mm (0.218 in.), replace the igniter(s). Constant erosion on the electrode is permitted.
(4) Examine the ceramic insulator for cracks or damaged area. Replace the igniter plug(s) if the ceramic insulator is damaged.
(5) Examine the igniter plug(s) electrical connection. Replace the igniter plug(s) if the electrical connection pins are bent, burned or loose. Replace the igniter(s) if discoloration of the connector ceramic is detected.
(6) Examine the part of the igniter plug(s) that has the thread for signs of distortion or damaged threads. Replace the igniter plug(s) if the threads are damaged.
(7) Examine the tip for burned or melted metal. Replace the plug(s) if metal is burned or melted.
(8) Maximum wear on the tip is 0.8 mm (0.030 in.).
5. Close-upNOTE: There are two igniter plug(s) installed in this APU.
(1) Visually examine the igniter plug(s) for broken or missing parts. Shake the igniter plug(s) for signs of loose parts. Replace the igniter plug(s), if necessary. (2) Examine the igniter plug(s) for internal wear and damage.
(3) Examine the outer casing for spark erosion. If the erosion is greater than 5.537 mm (0.218 in.), replace the igniter(s). Constant erosion on the electrode is permitted.
(4) Examine the ceramic insulator for cracks or damaged area. Replace the igniter plug(s) if the ceramic insulator is damaged.
(5) Examine the igniter plug(s) electrical connection. Replace the igniter plug(s) if the electrical connection pins are bent, burned or loose. Replace the igniter(s) if discoloration of the connector ceramic is detected.
(6) Examine the part of the igniter plug(s) that has the thread for signs of distortion or damaged threads. Replace the igniter plug(s) if the threads are damaged.
(7) Examine the tip for burned or melted metal. Replace the plug(s) if metal is burned or melted.
(8) Maximum wear on the tip is 0.8 mm (0.030 in.).
Subtask 49-41-41-420-058-A ** ON A/C NOT FOR ALL