Section 3 – Emergency procedures
OTHER EMERGENCIES
5.5. CARBURETTOR ICING
DURING TAKEOFF
The carburettor icing in “full throttle” mode is unlikely.
Take off in known or suspected icing condition is forbidden.
Therefore, and in order to dispose of full engine take off power, the take-off must
be performed with carburettor heating OFF.
IN FLIGHT
Carburettor icing is considered probable when external air temperature is below
15° C and visible air moisture (clouds, mist, haze or fog) or atmospheric precipi-
tation are present.
Generally, an OAT-to-dew point temperature spread lower than 10°C and OAT
less than 15°C with visibility lower than 5 km is a positive indication of likely ic-
ing formation condition.
Should an inadvertent flight into known or forecast icing condition happen carbu-
rettor heating should be selected “ON” as soon as possible: the earlier carburettors
are warmed the better the chances not to form ice and avoid engine loss or reduc-
tion of power.
Keep Carb Heating “ON” until engine power is restored and area of possible icing
condition is exited.
Carburettor Heating to “ON” will cause engine RPM reduction of
about 100 RPM, causing a sensible available engine power de-
crease.
To Next Page
Loading...
