DOC AIRBUS | TSM A320FFlap Vibration
TASK 27-54-00-810-801-A
Flap Vibration
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 27-54-00-210-050-A
Subtask 27-54-00-810-050-A
[Rev.8 from Aug 2018]
2026.04.04 04:27:41 UTC
Flap Vibration
1. Possible Causes
- upper kink seal
- lower kink seal
- cushion seal
- free movement at the trailing edge of the flaps
- Spherical Bearing
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 05-50-00-810-801-A | Identification of the Cause of In-Flight Airframe Vibrations and/or Noises |
| AMM 27-54-00-200-003 | Detailed Dimensional Check - Free Movement at the Trailing Edge of the Flaps |
| CMM 275443 | |
| AMM 27-54-46-000-002 | Removal of the No.1 Flap Carriage |
| AMM 27-54-46-400-002 | Installation of the No.1 Flap Carriage |
| AMM 27-54-61-000-002 | Removal of the Flap Kink-Seals and Cushion-Seals |
| AMM 27-54-61-400-006 | Installation of the Flap Kink-Seals and Cushion-Seals |
| AMM 53-35-11-000-001 | Removal of the Wing-to-Fuselage Fairings |
| AMM 53-35-11-400-001 | Installation of the Wing-to-Fuselage Fairings |
Subtask 27-54-00-210-050-A
A. Inspection
(1) Make sure that the identification of the cause of the vibration is correct, (Ref. TSM TASK 05-50-00-810-801).
(2) Make sure that the upper kink seal , lower kink seal and the cushion seal are not damaged and are correctly installed AMM 27-54-61-000-002 AMM 27-54-61-400-006.
(3) Make sure that the amount of free movement at the trailing edge of the flaps is correct AMM 27-54-00-200-003.
(4) Do a check of the inboard flap to carriage attachment, self lubricating spherical bearing as follows:
(a) Remove the applicable wing to fuselage panels from the identified defective wing, AMM 53-35-11-000-001.
(b) Examine the spherical bearing for play, and migration of the teflon liner.
(c) If no play or teflon liner migration is found, replace the applicable wing to fuselage panels AMM 53-35-11-400-001.
(d) If play or teflon liner migration is found, do the fault isolation procedure.
4. Fault Isolation(1) Make sure that the identification of the cause of the vibration is correct, (Ref. TSM TASK 05-50-00-810-801).
(2) Make sure that the upper kink seal , lower kink seal and the cushion seal are not damaged and are correctly installed AMM 27-54-61-000-002 AMM 27-54-61-400-006.
(3) Make sure that the amount of free movement at the trailing edge of the flaps is correct AMM 27-54-00-200-003.
(4) Do a check of the inboard flap to carriage attachment, self lubricating spherical bearing as follows:
(a) Remove the applicable wing to fuselage panels from the identified defective wing, AMM 53-35-11-000-001.
(b) Examine the spherical bearing for play, and migration of the teflon liner.
(c) If no play or teflon liner migration is found, replace the applicable wing to fuselage panels AMM 53-35-11-400-001.
(d) If play or teflon liner migration is found, do the fault isolation procedure.
Subtask 27-54-00-810-050-A
A. Procedure
(1) Remove the No. 1 flap carriage AMM 27-54-46-000-002.
(a) Replace the Spherical Bearing CMM 275443.
(2) Install the No. 1 flap carriage AMM 27-54-46-400-002.
(3) After the subsequent flight, make sure that the fault does not continue.
(1) Remove the No. 1 flap carriage AMM 27-54-46-000-002.
(a) Replace the Spherical Bearing CMM 275443.
(2) Install the No. 1 flap carriage AMM 27-54-46-400-002.
(3) After the subsequent flight, make sure that the fault does not continue.