(a)
Visible moisture (clouds, fog with the visibility of one mile or less, rain, snow, sleet, ice crystals, etc.) is seen, or
(b)
Standing water, ice or snow is on the ground.
B.
Equipment
(1)
Herman Nelson Heater - BT-400
(2)
Hot Air Source Heater - Diesel Fueled, Portable, Duct Type
400,000 BTUH, Model 4600-46
Engineered Air Systems, Inc., St. Louis, MO 63132, USA
(Alternate to Herman Nelson Heater)
(3)
Low Pressure Air Cart -Boeing Model 502
(primarily for engine starting,
but extremely effective for
snow and ice removal)
(4)
Service Interphone Equipment
(5)
Engine Inlet and Exhaust Covers -C10001-1 and C10001-2 are superseded by
commercial equipment as follows:
-Langdon Manufacturing Co.,
222 N. Hydraulic, P.O. Box 11026,
Wichita, KS 67202
Inlet cover part No. LMC11G84-1
Exhaust cover part No. LMC11G84-2,
or
-Texstar Plastics,
802 Ave J East, P.O. Box 534036,
Grand Prairie, TX 75051
Inlet cover part No. 5101505
Exhaust cover part No. 5101504
(6)
Inlet Guard, Engine Run-Up - C12001
C.
Consumable Materials
(1)
Deicer - CP2499 (AMM 70-10-01/201)
D.
Prepare for Engine Operation
S 842-134-C00
(1)
Prepare for engine operation with the normal engine operation procedure and add these steps:
(a)
Make sure the inlet cowl is free of ice and snow.
(b)
Make sure the N1 rotor turns freely in the counter-clockwise direction as seen from the front. 1) Manually turn the N1 rotor with a wooden stick or rod that
is made from another material that will not damage the fan blades.
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2) If you cannot turn the rotor, do these steps: a) Install the inlet cover. b) Attach a suitable hot air duct from the heater. c) Apply heat until rotor turns freely.
(c) If it is necessary, deice or anti-ice the fan blades with the deicer CP2499.
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) Prepare the deicing/anti-icing solution with the table that follows.
NOTE: Hot water above 60°C (140°F) is more efficient.
____
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
~................................................................ | CONCENTRATION OF HEATED WATER/DEICER FLUID (VOL %) | .................................................................. | OAT | | | | °C (°F) | DEICING | ANTI-ICING | ..................................................................
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