Daher-Socata TBM 900 Pilot's Information Manual page 234

SECTION 4
NORMAL PROCEDURES
EASA Approved
FLIGHT INTO KNOWN ICING CONDITIONS (2/3)
Ice protection procedures
1 - Prior to entering IMC, as a preventive :
If OAT <= 5°C :
- "INERT SEP" SWITCH
- "IGNITION" SWITCH
- "PROP DE ICE" SWITCH
- "AIRFRAME DE ICE" SWITCH
- "WINDSHIELD DE ICE" SWITCH
2 - When operating under IMC:
- "INERT SEP" SWITCH
- "IGNITION" SWITCH
- "PROP DE ICE" SWITCH
- "AIRFRAME DE ICE" SWITCH
- "WINDSHIELD DE ICE" SWITCH
NOTE : When OAT is below - 35° C, avoid operations of the "AIRFRAME DEICE SYSTEM" for a too long
period because the boots could be damaged. The "INERT SEP" switch must be left ON while
the airplane remains in icing conditions.
SHOULD CONDITIONS REQUIRE IT, APPLY THESE DIRECTIVES FROM BEGINNING OF
IF AIRPLANE LEAVES ICING CONDITIONS, MAINTAIN "INERT SEP" ON AS LONG AS ICE THICKNESS ON
NON-DEICED VISIBLE PARTS EXCEEDS 15 mm (OR ½ INCH).
This will avoid ice fragments coming from propeller spinner and being ingested by engine.
INERTIAL SEPARATOR POSITION AFFECTS ENGINE PARAMETERS (PARTICULARLY TRQ AND ITT).
CARE MUST BE EXERCISED WHEN OPERATING THE INERTIAL SEPARATOR OR WHEN INCREASING
POWER WITH THE INERTIAL SEPARATOR ON, TO AVOID EXCEEDING ENGINE LIMITATIONS.
Standby compass indications are altered when windshield deicing system(s) operate(s).
Page 4.5.2
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CAUTION
TAXI ONWARDS.
"IGNITION" switch may be left ON for a long period.
PILOT'S OPERATING HANDBOOK
NOTE
Edition 0 -- October 31, 2013
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Rev. 1