DOC AIRBUS | AMM A320FCold Weather Maintenance - Flight Controls
TASK 12-31-27-660-001-A
Cold Weather Maintenance - Flight Controls
This procedure gives the cold weather maintenance practices for the flight controls.
2. Job Set-up Information
A. Consumable Materials
B. Referenced Information
3. Job Set-up
Subtask 12-31-27-941-050-A
Subtask 12-31-27-660-050-A
[Rev.10 from 2021]
2026.03.31 22:57:36 UTC
Cold Weather Maintenance - Flight Controls
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
CAUTION:
BEFORE YOU START THE ENGINE OR YOU PRESSURIZE THE HYDRAULIC SYSTEMS, MAKE SURE THAT THERE IS NO ICE OR SNOW ON THE FLIGHT CONTROLS AREA (ELEVATOR, RUDDER AND AILERON). IF YOU DO NOT OBEY THIS PRECAUTION, DAMAGE TO THE FLIGHT CONTROL SYSTEM CAN OCCUR .
1. Reason for the JobThis procedure gives the cold weather maintenance practices for the flight controls.
2. Job Set-up Information
A. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03GBC1) | Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - |
| (Material No.07AAA1) | Deicing Fluid-- Type I Glycol Based |
| (Material No.07BAB1) | Deicing/Anti-icing Fluid-- Type II Glycol Based |
| (Material No.07BAC1) | Deicing/Anti-icing Fluid-- Type III Glycol Based |
| (Material No.07BAD1) | Deicing/Anti-icing Fluid-- Type IV Glycol Based |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-22-27-640-004-A | Lubricate all Carriage Rollers on all Flap Tracks |
| TASK 12-22-27-640-006-A | Lubricate all Track Rollers and Pinions |
| TASK 12-31-11-660-001-A | Cold Weather Maintenance - Anti-Icing Protection |
Subtask 12-31-27-941-050-A
A. Not applicable
4. ProcedureSubtask 12-31-27-660-050-A
A. Check of the Flight Controls
(1) Remove any ice from :
(3) If an aircraft arrives with the slats and flaps in a position other than fully retracted during a period of ice or snow conditions, those slats and flaps which are extended must be inspected for ice and snow accumulation before retracting.
(4) All control surfaces must have no ice, snow or frost. After the deicing operation, do a check of the associated hinges, tracks, actuators and servo controls for trapped moisture that can freeze. Apply anti-icing fluid for protection Deicing Fluid-- Type I Glycol Based (Material No.07AAA1) ,07BAB1 Deicing/Anti-icing Fluid-- Type II Glycol Based 07BAC1 Deicing/Anti-icing Fluid-- Type III Glycol Based 07BAD1 Deicing/Anti-icing Fluid-- Type IV Glycol Based
(5) Do a check of the leading edge area of the spoilers, the flaps for ice, snow and frost.
(6) Final checks after aircraft deicing on flap/slat areas : the applicable areas must have no snow and ice as well as water accumulation. During snowfall, freezing rain and drifting snow it is possible that snow and melting ice go into slots, drainage openings, hinges and operating linkage and freeze again. You must do the check of these areas with special attention when an aircraft has been parked outside for a long period above mentioned conditions.
Subtask 12-31-27-660-051-A (1) Remove any ice from :
- the wing leading edge
- the slats
- the flaps
- the spoilers
- the ailerons
(3) If an aircraft arrives with the slats and flaps in a position other than fully retracted during a period of ice or snow conditions, those slats and flaps which are extended must be inspected for ice and snow accumulation before retracting.
(4) All control surfaces must have no ice, snow or frost. After the deicing operation, do a check of the associated hinges, tracks, actuators and servo controls for trapped moisture that can freeze. Apply anti-icing fluid for protection Deicing Fluid-- Type I Glycol Based (Material No.07AAA1) ,
(5) Do a check of the leading edge area of the spoilers, the flaps for ice, snow and frost.
(6) Final checks after aircraft deicing on flap/slat areas : the applicable areas must have no snow and ice as well as water accumulation. During snowfall, freezing rain and drifting snow it is possible that snow and melting ice go into slots, drainage openings, hinges and operating linkage and freeze again. You must do the check of these areas with special attention when an aircraft has been parked outside for a long period above mentioned conditions.
B. Lubrication of the Flaps and Slats
(2) The winter preparation program should include the flap and slat lubrication.
NOTE: To do the lubrication of the flaps and slats in cold weather condition, we recommend to use Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) .
(1) Do the applicable flap/slat lubrication tasks (Ref. AMM TASK 12-22-27-640-004) (Ref. AMM TASK 12-22-27-640-006)(2) The winter preparation program should include the flap and slat lubrication.
NOTE: In climates where the atmosphere is both particularly cold and humid (mist/fog) use your experience to reduce the lubrication task intervals during winter operations.
NOTE: In extreme climates and low ambient temperatures it may be difficult to lubricate the flap and slat systems correctly. If hangar space is not available then it is recommended to do the lubrication tasks at a station where the appropriate facilities are available or where the ambient temperature is above 0 deg.C (32.00 deg.F).
NOTE: Increases in grease stiffness may occur if water present within a lubricant forms discrete lumps of ice, the associated increases in system friction may then result in torque limiter operation.
(3) When you do the lubrication tasks take care to ensure that all the old grease is removed in order to reduce the risk of an increase in grease stiffness.