(2)
Look for ice in the lower fuselage.
(3)
If you find ice below the aft cargo compartment, look for ice below the forward cargo compartment.
(4)
Install the floor panel (Ref. TASK 53-42-14-400-001).
(5)
Frequency of check You must adapt the frequency of the check to the climatic conditions in whichthe aircraft operates. In the worst condition one check per week should be sufficient initially.
Subtask 12-31-51-660-052
C. Removal of Ice
(1)
Warm hangar The recommended procedure is to put the aircraft in a warm hangar with cargo bay doors open. This will cause all the ice in the aircraft to melt and the water will flow out through the drain valves.
(2)
Hot air blower
CAUTION : MAKE SURE THAT THE TEMPERATURE OF THE AIR FROM THE HOT AIR
_______ BLOWER IS NOT MORE THAN 50 DEG.C (122 DEG.F). IF THE TEMPERATURE IS MORE THAN 50 DEG.C (122 DEG.F) YOU CAN CAUSE DAMAGE TO THE AIRCRAFT.
You can use a hot air blower if the aircraft is parked in an open area.
(3)
Frequency of ice removal You must adapt the frequency of ice removal to the climatic conditions in which the aircraft operates. In the worst conditions, one overnight stop a week is usually sufficient for ice removal.
(4)
The procedure used to remove ice from the lower fuselage must be monitored to make sure that all water drains are working and that the all the ice is removed.
COLD WEATHER MAINTENANCE - DOORS - MAINTENANCE PRACTICES
________________________________________________________
TASK 12-31-52-660-001
Cold Weather Maintenance - Doors
1. Reason for the Job
__________________
This procedure gives the cold weather maintenance practices for the doors.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific clean cloth
No specific 1 HOT AIR BLOWER OPERATING 40 DEG C (100 DEG F)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 04-011 USA MIL-G-4343
SILICONE GREASE PNEUMATIC SYST AND SEALS
(Ref. 20-31-00)
Material No. 04-012 USA VV-P-236 PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00) R Material No. 04-017 USA A-A-59173 SILICONE GREASE (Ref. 20-31-00)
Material No. 05-001 USA SAE-AS8660
INSULATING AND SEALING GREASE SILICONE
(Ref. 20-31-00)
Material No. 11-004 USA MIL-T-81533
1.1.1TRICHLOROETHANE (METHYL CHLOROFORM)
(Ref. 20-31-00)
Material No. 15-005A AIB TN 10138 TYPE I GRADE 2 CORROSION PREVENTIVE TEMPORARY PROTECTIVE COMPOUND (Ref. 20-31-00)
Material No. 19-003 USA AMS 3819
LINT-FREE COTTON CLOTH (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
12-22-52-640-002 Lubrication of the FWD and AFT Cargo-Compartment Doors 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the
Yellow Electric Pump
52-30-00-860-006 Open the Bulk Cargo-Compartment Door
52-30-00-860-008 Close the Bulk Cargo-Compartment Door
3. Job Set-up
__________
Subtask 12-31-52-010-050
A. There is no special job set-up for this task.
4. Procedure
_________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Subtask 12-31-52-640-050
A. Winter Preparation on the Passenger Crew Doors and Emergency Exit Hatches
(1)
Make sure that the passenger crew doors and emergency exit hatches pressure seal drains are clear and free from obstruction.
(2)
Remove the old lubricant and dirt from the upper and lower door guide fittings and guide rollers, use a clean cloth.
(3)
Apply COMMON GREASE (Material No. 04-017) to the upper and lower door guide fittings and guide rollers.
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