Leerjet 35/36 Developed for Training Purposes 6-19
February 1998
Servicing
Deicing Supplemental Information
This section provides supplementary information on aircraft
deicing, anti-icing/deicing fluids, deicing procedures, and air-
craft operating procedures. Consult the AFM, Maintenance
Manual Chapter 12 – Servicing, and FAA Advisory Circulars for
deicing procedures, fluid specifications, recommendations, and
hazards.
Federal Aviation Regulations (FARs) prohibit takeoff with snow,
ice, or frost adhering to the wings and control surfaces of the
aircraft. It is the responsibility of the pilot-in-command to ensure
the aircraft is free of snow, ice, or frost before takeoff.
Failure to adequately deice the aircraft can result in seriously
degraded aircraft performance, loss of lift, and erratic engine
and flight instrument indications.
Following extended high-altitude flight, frost can form at ambi-
ent temperatures above freezing on the wing’s underside in the
fuel tank areas. Refueling the aircraft with warmer fuel usually
melts the frost.
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