DOC AIRBUS | AMM A320FVisual Inspection of the Centerbody [CFMI]
TASK 78-11-12-210-040-A
Visual Inspection of the Centerbody
1. Reason for the Job
This inspection criteria is only for those portions of the centerbody that can be observed on-wing. Therefore, the limits and remarks do not apply to the engine attach ring and forward non-accessible areas of the centerbody. Inspection of these areas should be done at the next component removal from the engine.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 78-11-12-941-055-A ** ON A/C NOT FOR ALL
Subtask 78-11-12-210-052-A ** ON A/C NOT FOR ALL
Subtask 78-11-12-869-058-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:56:05 UTC
Visual Inspection of the Centerbody
1. Reason for the Job
This inspection criteria is only for those portions of the centerbody that can be observed on-wing. Therefore, the limits and remarks do not apply to the engine attach ring and forward non-accessible areas of the centerbody. Inspection of these areas should be done at the next component removal from the engine.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
CenterbodySubtask 78-11-12-941-055-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
4. Procedure(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 78-11-12-210-052-A ** ON A/C NOT FOR ALL
A. Visual Inspection of the Centerbody
(1) Use proper lighting to illuminate the centerbody. Be especially sure that there are no cracks beyond the limits at the circumferential weld joints.
5. Close-up(1) Use proper lighting to illuminate the centerbody. Be especially sure that there are no cracks beyond the limits at the circumferential weld joints.
NOTE: It is permitted to have polish marks on the inner skin surface.
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | REMARKS |
|---|---|---|
| 1.Outer surface and weld joints for: | | |
| A.Cracks | 1.00 in. (25.4 mm) max per crack. 6.00 in. (152.4 mm) max total, all cracks. 4.00 in. (101.6 mm) minimum separation between any two cracks. | Stop-drill both ends of cracks with 0.125 in. (3.2 mm) drill. Inspect for growth at every 750 Flight Hours / 750 Flight Cycles / 4 calendar months (whichever the earliest) check until centerbody can be removed and welded per |
| 2.Outer surface for: | | |
| A.Dents | Maximum depth 0.25 in. (6.3 mm). Minimum radius 0.25 in. (6.3 mm). Maximum diameter 2.50 in. (63.5 mm). | OK for flight. Reform to smooth contour at next shop visit. |
| B.Missing or damaged rivets at stiffeners | Maximum of 5 percent missing or damaged. There must be at least one good rivet between any two that are missing or damaged. | Replace rivets at next shop visit. |
| C.Small nicks, gouges, punctures, and cracks | Maximum size 0.12 in. (3.05 mm) . | Clean out damage using a 0.190 in. (4.8 mm) drill. |
Subtask 78-11-12-869-058-A ** ON A/C NOT FOR ALL
A. Make sure that the work area is clean and clear of tools and other items.
Subtask 78-11-12-942-053-A ** ON A/C NOT FOR ALL B. Remove the WARNING NOTICE(S).