AIRCRAFT MAINTENANCE MANUAL
DFE-AMM-AR1
Rev. 1 – 07/24/2014
1-14
1.6.6. Winter operation
1.6.6.2. Definition
It is considered a winter operation, if the outside temperature falls below 41°F (+5 °C).
1.6.6.2. Preparing the aircraft for winter operation
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Tools needed: Screwdriver to remove upper cowling, wheel pants and access windows,
grease gun, oiler.
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Parts needed: recommended Grease, Oil and anti-freezing
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Type of maintenance: Line
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Level of Certification needed: Refer to Section 0 – Paragraph 0.12.
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Instructions:
Aircraft airframe
1. Lubricate the aircraft per Lubricating Chart (100 hr. Inspection) if the last inspection was
not within 6 months
2. Check and adjust rudder and elevator control cable “pre-stress”
3. Check cockpit canopy rubber packing – replace if damaged
4. Check fuel tank venting
5. Check attachment of wing, ailerons, flaps and tail units; lubricate per Lubricating Chart
Engine
Refer to the Engine Manual for more details.
The following should be done:
1. Add Anti-freeze to the cooling system as required (usually a 50/50 mix.)
2. Change the oil (see Engine Manual or Service instructions)
3. Check the spark plug gaps
If low cylinder head or oil temperatures occur during operation under low outside temperature, then
do the following:
1. Cover a portion of the radiator face using an aluminum sheet, insert it between the
radiator and the lower engine cowling.
2. Cover the oil cooler face (or a part of face) using an aluminum sheet attached with a
suitable adhesive tape.
3. Cover the Reduction gear unit by means of a car engine cover
4. Cover the oil filter (see instructions for Reduction gear unit)
5. Cover the oil tank (see instructions for Reduction gear unit)
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Task proper accomplishment check: Check proper attachment of upper cowling, wheel pants
and access windows.
