DOC AIRBUS | AMM A320FCold Weather Maintenance - Power Plant
TASK 12-31-71-660-001-A
Cold Weather Maintenance - Power Plant
1. Reason for the Job
This procedure gives the cold weather maintenance practices for the Power Plant.
2. Job Set-up Information
A. Consumable Materials
B. Referenced Information
3. Job Set-up
Subtask 12-31-71-941-050-A ** ON A/C NOT FOR ALL
Subtask 12-31-71-660-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 04:22:23 UTC
Cold Weather Maintenance - Power Plant
1. Reason for the Job
This procedure gives the cold weather maintenance practices for the Power Plant.
2. Job Set-up Information
A. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2499) | Kilfrost ABC3 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-790-002-B | Fuel or Hydraulic or Oil Leakage Limits |
| TASK 71-00-00-860-003-A | Engine Start in Cold Weather Conditions (OAT Less Than -40 Degrees) |
Subtask 12-31-71-941-050-A ** ON A/C NOT FOR ALL
A. Not applicable
4. ProcedureSubtask 12-31-71-660-050-A ** ON A/C NOT FOR ALL
A. Ice can form in the engine intakes and freeze the fan, therefore you must do a careful examination of the engine intake and fan before engine start up.
Attention should be paid to the forward and rear sides of the fan blades in order to determine whether clear ice is present.
Use hot air blower to remove all traces of ice and residual water before engine start up.
Subtask 12-31-71-660-051-A ** ON A/C NOT FOR ALL Attention should be paid to the forward and rear sides of the fan blades in order to determine whether clear ice is present.
Use hot air blower to remove all traces of ice and residual water before engine start up.
B. Freezing Points
(1) The oil temperature is also a limitation. For the approved oils and the oil limitation temperatures, you must refer to the engine manufacturer's data.
Subtask 12-31-71-660-052-B ** ON A/C NOT FOR ALL (1) The oil temperature is also a limitation. For the approved oils and the oil limitation temperatures, you must refer to the engine manufacturer's data.
C. Preparation for engine start
(a) Prepare the deicing/anti-icing fluid with the table given below :
CONCENTRATION OF HEATED WATER/DEICER FLUID (VOL %)
(2) Look at the general condition of the fan spinner and fan blades, core exhaust nozzle, LPT and external surfaces of the cowls.
(3) Make a check of the drain ports for fuel, oil and hydraulic leaks (Ref. AMM TASK 71-00-00-790-002). Also make sure that fuel drained from the engine does not cause a fire.
WARNING:
DEICING/ANTI-ICING FLUID IS DANGEROUS. USE RUBBER GLOVES AND EYE PROTECTION. KEEP THE FLUID AWAY FROM HEAT AND AN OPEN FLAME. PROVIDE ADEQUATE VENTILATION.
CAUTION:
USE ONLY GLYCOL ALCOHOL AS A DEICING/ANTI-ICING MIXTURE. METHANOL CAN CAUSE CORROSION TO ENGINE PARTS MADE OF TITANIUM.
(1) If it is necessary, de-ice or anti-ice the fan blades with Kilfrost ABC3 (Material No.CP2499) . (a) Prepare the deicing/anti-icing fluid with the table given below :
CONCENTRATION OF HEATED WATER/DEICER FLUID (VOL %)
| ------------------------------------------------------------------------------ |
| ! OAT deg C (Deg F) ! DEICING ! ANTI-ICING ! |
| ------------------------------------------------------------------------------ |
| ! ! WATER HEATED TO 60 DEG C ! ! |
| ! -3 (27) and above ! (140 deg F) MINIMUM OR HEATED ! 50/50 WATER/DEICER ! |
| ! ! MIX OF DEICER WITH WATER ! ! |
| !----------------------!--------------------------------!--------------------! |
| ! ! ! ! |
| ! -4 to -7 (19 to 26) ! 50/50 HEATED WATER/DEICER ! 50/50 WATER/DEICER ! |
| ! ! ! ! |
| !----------------------!--------------------------------!--------------------! |
| ! ! ! ! |
| ! -8 to -14 (7 to 18) ! 50/50 HEATED WATER/DEICER ! 25/75 WATER/DEICER ! |
| ! ! ! ! |
| !----------------------!--------------------------------!--------------------! |
| ! ! ! ! |
| ! -15 to -17 (1 to 6) ! 50/50 HEATED WATER/DEICER ! 100% DEICER ! |
| ! ! ! ! |
| !----------------------!--------------------------------!--------------------! |
| ! ! ! ! |
| ! -18 to -25 (-13 to 0)! 25/75 HEATED WATER/DEICER ! 100% DEICER ! |
| ! ! ! ! |
| !----------------------!-----------------------------------------------------! |
| ! ! SAE TYPE II FLUIDS CAN BE USED AS ! |
| ! ! DEICING/ANTI-ICING AGENTS, IF A 7 DEG C (13 DEG F) ! |
| ! ! BUFFER IS MAINTAINED BETWEEN THE FREEZING POINT OF ! |
| ! -26 (-14) and below ! THE CONCENTRATED FLUID AND OAT. ! |
| ! ! IN ALL CONDITIONS THIS TEMPERATURE MUST NOT BE ! |
| ! ! LOWER THAN THE LOWEST OPERATIONAL TEMPERATURE AS ! |
| ! ! DEFINED BY THE AERODYNAMIC ACCEPTANCE TEST OF THE ! |
| ! ! MANUFACTURER. ! |
| ------------------------------------------------------------------------------ |
NOTE: Hot water above 60 deg.C (140.00 deg.F) is more efficient. The upper limit should not exceed 93 deg.C (199.40 deg.F).
NOTE: Hot air blower max operating temperature is 55 deg.C (131.00 deg.F).
(b) Apply the deicing/anti-icing mixture using a soaked clean cloth on the frozen fan blades. (2) Look at the general condition of the fan spinner and fan blades, core exhaust nozzle, LPT and external surfaces of the cowls.
(3) Make a check of the drain ports for fuel, oil and hydraulic leaks (Ref. AMM TASK 71-00-00-790-002). Also make sure that fuel drained from the engine does not cause a fire.
NOTE: In case of extreme cold weather condition (OAT < -20 deg.C), fuel leaks from the drain may occur and should not be considered as abnormal. Therefore, check for fuel leaks at the drain mast shall be performed with the engine fully stabilized at idle.
(4) For the engine start in cold weather conditions (Ref. AMM TASK 71-00-00-860-003).