Cold Weather Deicing/Anti-icing Manual 寒冷天气除防冰手册 Operations Manual Training 运行手册培训(24)

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18.6.5 When using Type II or IV anti-ice fluid, the Pre-takeoff Contamination Inspection of the representative surface, when required, must be completed within 5 minutes of the beginning of the take-off roll.
18.6.6 If using only Type I fluid, and contamination is suspected or the minimum holdover time expires, the aircraft must be deiced again or the flight delayed until conditions improve. A Pre-Takeoff Contamination Inspection is not appropriate in this case since no 5 minute period between inspection of the representative surface and the beginning of the takeoff roll is allowed with Type I fluid. This is due to the fact that the holdover times for Type I fluid are very short and the fluid can fail very rapidly.
18.6.7 Take off should not be attempted in conditions of heavy snow, snow pellets, Ice pellets, moderate and heavy freezing rain, hail or any conditions that are not covered by the specific holdover time table.

18.7  General remarks
18.7.1 In special  situations, flight crews are not to allow operational or commercial pressures to influence decisions. The minimum requirements have been presented here, as well as the various precautions.
18.7.2 If there is any doubt as to whether the aircraft is contaminated -DO NOT take off.
18.7.3 As in any other business, the key factors to ensuring efficient and safe procedures are: Awareness, understanding and communication. If there is any doubt or question at all, ground and flight crews must communicate with each other.

CENTRAL DE-ICING FACILITY (CDF)
Some of the airports have established elaborate de/anti icing facilities which are either taxi through facilities or engine off de-icing facilities. The crew is to familiarize themselves with the day’s de-icing procedure, the taxi procedure, aircraft configuration, communication procedures, and HOT tables. For example the Greater Toronto Airport Authority (GTAA) has a CDF which is equipped to de/anti-ice a large number of aircraft. The detailed procedures for de-icing at the CDF are attached at Appendix – ‘H’
Issue II 02.07.2009 Rev. 0

ACCIDENT/INCIDENT DURING DE/ANTI-ICING
The crew is to report any accident /incident/irregularity that occurs during the de/anti-icing procedure either at the CDF or at the gate. This would help in accountability and in the review of procedures /operations, if required.
Issue II 02.07.2009 Rev. 0

EMERGENCY DURING ANTI/DE-ICING

Should an emergency occur during the de-icing process, or within the designated de-icing area, the crew must inform the controlling authority by the appropriate means at their disposal (by radio, visual/audio means, etc.) and communicate the nature of the emergency. While the Central De-icing Facility (CDF) has overall responsibility to coordinate with the ATC for any subsequent action, the PIC may elect any course of action that would be appropriate. The crew should plan for any of the following emergencies or any other emergency that could occur either at the gate or at any remote de-icing location and take action as appropriate.
　
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