S 663-052
(4)
If it is necessary to apply more fluid before the subsequent flight, do a full ice removal/anti-icing procedure.
H. Operation Checks
S 713-053
(1) Before you start the engine, do the steps that follow to make sure the systems will operate correctly.
(a)
If you think that seals are frozen or there is blockages in the balance panel bays, then move the control surfaces manually before you move them with power.
(b)
Examine the openings in the pitot probe, probes installed on the strut or in the engine inlet, and the static ports. Make sure they are clear of ice or snow.
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(c)
Make sure there is no ice or snow collected on the landing gear and or in the wheel wells.
(d)
Make sure all the inlets are clear of ice or snow.
(e)
Make sure all the drains are clear and not blocked.
(f)
Make sure the engine compressor can turn freely.
NOTE: If the fan (N1) cannot turn during an engine start
____ because of ice, this can cause heavy damage. When it is possible that water collected in the engine at freezing temperatures, you msut make sure the fan (N1) can turn before you start the engine. You can see the low pressure (LP) rotor fan blades turn from the ground. If the wind does not turn the fan, you can turn it by hand. If you will motor the engine to make sure the engine compressor turns, use the procedure in AMM 71-00-00/201.
(g) Make sure all of the doors are clear of ice.
I. To Park the Airplane
S 583-054
WARNING: IF HIGH WINDS ARE POSSIBLE, USE THE PROCEDURE IN AMM 10-11-03
_______
TO SET THE STABILIZER.
(1)
The area where you will park the airplane must be clear of ice and snow. Chapter 10 gives the full procedures to park the airplane. Use the procedure in Chapter 10 if more steps are necessary because of the weather conditions and length of time the airplane will be parked.
S 863-063
(2)
Set the airplane control surfaces so that the rain and snow that melts will not flow into the balance bay area. Water in these areas can freeze and lock the controls.
(a)
Put the wing flaps to the full up position.
(b)
Put the stabilizer position to 4 units of trim (2° stabilizer position).
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S 493-055
CAUTION: EXAMINE THE ENGINE INTAKE AREAS IMMEDIATELY AFTER SHUTDOWN FOR
_______ ICE THAT IS THERE. REMOVE THE ICE WHILE THE TEMPERATURE OF THE ENGINE DECREASES AND BEFORE YOU INSTALL THE ENGINE PROTECTIVE PLUGS AND COVERS. IF YOU INSTALL THE PLUGS BEFORE THE TEMPERATURE OF THE ENGINE DECREASES, THE REMAINING HEAT IN THE ENGINE WILL MELT THE ICE TO WATER. THIS WATER WILL FLOW TO THE BOTTOM OF THE FAN SECTION. IT WILL FREEZE AGAIN WHEN THE TEMPERATURE OF THE ENGINE IS BELOW FREEZING. THIS WILL LOCK THE TIPS OF THE FAN LOWER BLADES IN ICE.
(3) Install all the plugs and covers, where available, for the intake or exhaust ducts and the different probes such as the pitot tubes. Use a brush to apply a thin layer of anti-ice fluid to the airplane surface before you install the cover. The covers will not freeze to the airplane if you do this.
J. Engine Operation
S 863-056
(1)
The full procedures to operate the engines in cold weather
conditions are in AMM 71-00-00/201.
S 663-057
(2)
Large pieces of ice and/or snow that go into the engine inlet can cause damage to the internal engine parts. Remove all the ice or snow from the engine inlet ducts before you start the engines.
S 663-058
(3)
Engine icing can occur when the conditons that follow occur:
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