Flight Into Severe Icing Conditions - Daher-Socata TBM 900 Pilot's Information Manual

SECTION 3
EMERGENCY PROCEDURES
EASA Approved
Severe icing conditions, particularly freezing rain and freezing drizzle, can be identified by :
- 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.
Procedures for exiting freezing rain or freezing drizzle conditions :
1 - Inform Air Traffic Control to exit severe icing conditions by changing the route or the altitude.
2 - Avoid any sudden maneuver on flight controls.
3 - Do not engage the autopilot.
4 - If the autopilot is engaged, hold the control wheel firmly and disengage the autopilot.
5 - If an unusual roll response or uncommanded roll control movement is observed, reduce the angle-of-attack.
6 - Do not extend flaps when holding in icing conditions. Operation with flaps extended can result in a reduced
wing angle-of-attack, with the possibility of ice forming on the upper surface further aft on the wing than
normal, possibly aft of the protected area.
7 - If the flaps are extended, do not retract them until the airframe is clear of ice.
Page 3.9.8

FLIGHT INTO SEVERE ICING CONDITIONS

PILOT'S OPERATING HANDBOOK
Edition 0 -- October 31, 2013
Rev. 1