Thu, Dec 16, 2004
The National Transportation Safety Board recommends that the
Federal Aviation Administration expeditiously do the
following:
Require all pilots and operators of
Cessna 208 series airplanes equipped for flight into known icing
conditions to undergo seasonal training for ground deicing and
flight into icing conditions on an annual basis. This seasonal
training should be timed to precede the operator's cold weather
operations and should specifically address (1) the limitations of
the Cessna 208 in icing situations; (2) the Cessna 208 deice and
anti-icing systems and controls and their use; (3) pilot actions
during cold weather ground operations, with emphasis on the need
for careful visual and tactile examination of wing and horizontal
stabilizer upper surfaces during the preflight inspection to ensure
that they are free of ice before takeoff; (4) pilot actions during
cold weather flight operations, with emphasis on the timely
recognition of potentially dangerous accumulations of ice and the
importance of having an appropriate strategy for escaping the icing
conditions and acting on that strategy promptly; (5) the hazards of
performance degradation caused by ice that remains after activation
of the deice boots; and (6) Cessna 208 Pilot Operating Handbook
icing-related limitations, warnings, and notes. (A-04-64)
Require Cessna Aircraft Company, working with Cessna 208
operators, to develop effective operational strategies (for
example, cold weather preflight strategies in remote locations,
viable methods of collecting icing-related weather information
before and during flight, ice detection and monitoring cues,
optimal use of anti-ice and deice systems, minimum airspeeds for
all phases of flight, proper use of flaps and engine power in icing
conditions, and development of ice accumulation limitations and
exit strategies for pilots in icing conditions) and related
guidance materials to minimize the chance of Cessna 208 ground and
in-flight icing accidents or incidents; the FAA should then verify
that these strategies and guidance materials are incorporated into
Cessna 208 operator manuals and training programs in a timely
manner. (A-04-65)
Require all pilots and operators of Cessna 208 series airplanes
to conduct a visual and tactile examination of the wing and
horizontal stabilizer leading edges and upper surfaces to ensure
that those surfaces are free of ice and/or snow contamination
before any flight from a location at which the temperatures are
conducive to frost or ground icing. (A-04-66)
Evaluate its current procedures for surveillance of operators of
Cessna 208 series airplanes equipped for flight into known icing
conditions to determine whether the surveillance effectively
ensures that these operators are in compliance with Federal deicing
requirements and, if necessary, modify the surveillance procedures
to ensure such compliance. (A-04-67)
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