The statement ‘post- de-icing/anti-icing check completed’ (if check completed).Upon completion of the anti-icing treatment, qualified staff provides the anti-icing code to the flight crew as follows: What does EASA require – Ref GM1 CAT.OP.MPA.250 Ice and other Contaminants - Ground Procedures (ED Decision 2021/005/R) The aircraft commander must receive accurate information on the fluid treatment carried out. This terrible accident with a tragic loss of life shows us clearly the importance of controlled and positive communication throughout and during the conclusion of the De-icing / Anti Icing operations.Įffective communication is of critical importance to the effectiveness of aircraft ground de/anti-icing. A lack of operational supervision and a lack of adherence to radio protocol.Ĭonclusion & Steps to Prevent Re-occurrence.A regulatory framework less demanding of foreign air carriers than of Canadian carriers.Incomplete training of Snowman 1 (the chief de-icing attendant).Inadequate or inappropriate communications equipment.Non-compliance with procedures on the part of the Canadian Airlines International Ltd.A lack of de-icing procedures within Royal Air Maroc.The following factors contributed to the accident: The Board determined that the flight crew started to taxi the aircraft before its perimeter was clear, following confusion in the radio communications. The two-vehicle drivers sustained minor injuries the three occupants of the cherry-pickers received fatal injuries.

The aircraft started to move forward and overturned the two de-icing vehicles that were still in front of the aircraft’s horizontal stabilizers.

The crew heard “dégivrage terminé” (de-icing completed), and the captain asked the co-pilot to inform the apron controller that the aircraft was ready to taxi.

The four engines were running during the de-icing operation.

The aircraft was being prepared for a scheduled flight from Mirabel to Casablanca, Morocco, with a stop at New York, New York.The Royal Air Maroc Boeing 747-400 was parked in the de-icing centre of Montreal (Mirabel) International Airport, Quebec. Introduction – What can happen when it all goes wrong!Ĭase Study – Collision with vehicle Royal Air Marocīoeing 747-400 CN-RGA Montreal (Mirabel) International Airport, Quebec 21 January 1995 Sofema Aviation Services (SAS) Presents considerations related to best practice communication procedures during Ground De-icing / Anti-icing Operations.

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