The Ice Detection System is only an advisory system. The pilot must activate
manually the ice protection systems as a preventive prior to entering icing
conditions or when icing conditions are identified.
In any case of icing conditions, first refer to procedure
, and in case of unforeseen icing conditions, refer in
addition to procedure
Flight into Severe Icing Conditions in Subsection 3.13.
Severe Icing Conditions
WARNING
Severe icing may result from environmental conditions outside of those
for which the airplane is certificated.
Flight in freezing rain, freezing drizzle, or mixed icing conditions
(supercooled liquid water and ice crystals) may result in ice build-up on
protected surfaces exceeding the capability of the ice protection system,
or may result in ice forming aft of the protected surfaces. This ice may
not be shed using the ice protection systems, and may seriously degrade
the performance and controllability of the airplane.
During flight, severe icing conditions that exceed those for which the airplane is
certificated shall be determined by the following visual cues. If one or more of
these visual cues exists, immediately request priority handling from air traffic
control to facilitate a route or an altitude change to exit the icing conditions.
-
Unusually extensive ice accumulation on the airframe and windshield in
areas not normally observed to collect ice,
-
Accumulation of ice on the upper surface of the wing aft of the protected
area.
Since the autopilot, when operating, may mask tactile cues that indicate adverse
changes in handling characteristics, use of the autopilot is prohibited when any of
the visual cues specified above exist, or when unusual lateral trim requirements or
autopilot trim warnings are encountered while the airplane is in icing conditions.
All wing icing inspection lights must be operative prior to flight into icing conditions
at night.
NOTE
This supersedes any relief provided by the Master Minimum Equipment List
(MMEL).
Refer to
Paragraph Equipment Required Depending on Type of Operation
.
Pilot's Information Manual
Section 2
Limitations
PIM TBM 960 - Edition 0
Rev. 00
Page 2.6.9
PIM - DO NOT USE FOR FLIGHT OPERATIONS
