DOC AIRBUS | AMM A320FVisual Inspection of the Booster Flow Splitter [CFML]
TASK 72-21-02-210-801-A
Visual Inspection of the Booster Flow Splitter
This procedure gives the criteria for the visual inspection of the booster flow splitter.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 72-21-02-941-055-A
Subtask 72-21-02-210-050-A
Subtask 72-21-02-942-051-A
[Rev.10 from 2021]
2026.04.01 02:51:30 UTC
Visual Inspection of the Booster Flow Splitter
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
ZONE: 400
1. Reason for the JobThis procedure gives the criteria for the visual inspection of the booster flow splitter.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | MAT - PROTECTIVE |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 72-21-00-300-802-A | Blend Repair of the Flow Splitter |
| TASK 72-21-02-000-802-A | Removal of the Flow Splitter |
Booster Flow SplitterSubtask 72-21-02-941-055-A
A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
(3) Put a MAT - PROTECTIVE at the Fan Cowl Door.
4. Procedure(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:
- The ENG/MODE selector switch, and
- The ENG/MASTER 1(2) control switch.
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
(3) Put a MAT - PROTECTIVE at the Fan Cowl Door.
Subtask 72-21-02-210-050-A
A. Visual Inspection of the Booster Flow Splitter
(a) Maximum serviceable limit: Not serviceable.
(2) Erosion on the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0039 in. (0.10 mm) in depth.
(3) Nicks in Area H of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0079 in. (0.20 mm) in depth.
(4) Dents in Area H of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0079 in. (0.20 mm) in depth.
(5) Scratches in Area H of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0039 in. (0.10 mm) in depth.
(6) Nicks in Area G of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0079 in. (0.20 mm) in depth.
(b) Maximum repairable limit: Any amount if under repair limits.
(c) Repair method: blend repair of flow splitter (Ref. AMM TASK 72-21-00-300-802).
(7) Dents in Area G of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0079 in. (0.20 mm) in depth.
(b) Maximum repairable limit: Any amount if under repair limits.
(c) Repair method: blend repair of the flow splitter (Ref. AMM TASK 72-21-00-300-802).
(8) Scratches in Area G of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0039 in. (0.10 mm) in depth.
(b) Maximum repairable limit: Any amount if under repair limits.
(c) Repair method: blend repair of the flow splitter (Ref. AMM TASK 72-21-00-300-802).
(9) Pitting on the booster flow splitter (1):
(a) Maximum serviceable limit: Not serviceable.
(10) Deposit in gap (Dimension A) between the inlet guide vane and the booster flow splitter (1):
(a) Maximum serviceable limit:
1 The deposits are not more than 0.512 in. (13.00 mm) long.
2 The distance between two deposits is more than 7.48 in. (189.99 mm).
3 A Maximum of five percent of the circumference can be affected.
Subtask 72-21-02-220-051-A NOTE: This visual check is to examine the booster flow splitter (1) through the fan blades. If a full inspection is necessary, remove the flow splitter (1) (Ref. AMM TASK 72-21-02-000-802).
(1) Cracks and tears on the booster flow splitter (1): (a) Maximum serviceable limit: Not serviceable.
(2) Erosion on the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0039 in. (0.10 mm) in depth.
(3) Nicks in Area H of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0079 in. (0.20 mm) in depth.
(4) Dents in Area H of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0079 in. (0.20 mm) in depth.
(5) Scratches in Area H of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0039 in. (0.10 mm) in depth.
(6) Nicks in Area G of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0079 in. (0.20 mm) in depth.
(b) Maximum repairable limit: Any amount if under repair limits.
(c) Repair method: blend repair of flow splitter (Ref. AMM TASK 72-21-00-300-802).
(7) Dents in Area G of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0079 in. (0.20 mm) in depth.
(b) Maximum repairable limit: Any amount if under repair limits.
(c) Repair method: blend repair of the flow splitter (Ref. AMM TASK 72-21-00-300-802).
(8) Scratches in Area G of the booster flow splitter (1):
(a) Maximum serviceable limit: Any amount, if not more than 0.0039 in. (0.10 mm) in depth.
(b) Maximum repairable limit: Any amount if under repair limits.
(c) Repair method: blend repair of the flow splitter (Ref. AMM TASK 72-21-00-300-802).
(9) Pitting on the booster flow splitter (1):
(a) Maximum serviceable limit: Not serviceable.
(10) Deposit in gap (Dimension A) between the inlet guide vane and the booster flow splitter (1):
(a) Maximum serviceable limit:
1 The deposits are not more than 0.512 in. (13.00 mm) long.
2 The distance between two deposits is more than 7.48 in. (189.99 mm).
3 A Maximum of five percent of the circumference can be affected.
B. Dimensional Inspection of the Booster Flow Splitter
(1) Dimension A of the booster flow splitter (1):
(a) Minimum serviceable limit: 0.006 in. (0.15 mm).
(b) Maximum serviceable limit: 0.03 in. (0.76 mm).
5. Close-up(1) Dimension A of the booster flow splitter (1):
(a) Minimum serviceable limit: 0.006 in. (0.15 mm).
(b) Maximum serviceable limit: 0.03 in. (0.76 mm).
Subtask 72-21-02-942-051-A
A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the MAT - PROTECTIVE from the fan cowl door.
(3) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the MAT - PROTECTIVE from the fan cowl door.
(3) Remove the WARNING NOTICE(S).