3.6. Aeroplane Icing Operations - Taxi
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[This section is not intended to replace any of your company requirements or the requirements specified in the CARs for Aeroplane Icing Operations. However, if in your operation the pilot has a role in dealing with icing after taxiing has begun, detail those actions here.]
Regardless of any previous actions taken to inspect for or remove frost, ice, or snow, if the pilot suspects that such contamination is present, the following inspections shall be made immediately prior to take-off:
- The pilot shall each visually inspect the representative surface that is visible.
- If the pilot deems it appropriate, the pilot shall carry out an external inspection of the critical surfaces.
Should any frost, ice, or snow be found to be adhering to critical surfaces, the Aeroplane shall not take-off. Rather arrangements shall be made to de-ice the Aeroplane.
[It may be useful for your operation to discuss techniques for dealing with snow and/or slush on manoeuvring areas. Consider such things as taxi speed, use of brakes, use of zero thrust and reverse thrust. The following is an example for a fictitious turboprop Aeroplane. Insert the procedures for your type of Aeroplane and your operation. In particular, the procedures must be in concert with the AFM.]
To the extent practical avoid taxiing through slush or loose snow. Under no circumstances should the Aeroplane be taxied through packed snow drifts that are deeper than the distance from the bottom of the wheel hub to ground. For dealing with slush or loose snow during taxi the following practises are recommended:
- Speed must be managed to minimize slush or snow impinging on flaps, landing gear doors, propellers, intakes, and brakes. Too high a taxi speed may result in contaminants spraying on the flaps. Too slow a taxi speed may cause snow to be pulled into the propeller.
- Speed must be sufficient to prevent the Aeroplane from bogging down in snow.
- Avoid use of reverse thrust as it may cause contaminants to become airborne and impinge on the Aeroplane. To reduce speed use zero thrust and judicious braking.
- When the Aeroplane is stopped set the engines and propellers to minimize blowing of snow and slush on to the Aeroplane.
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