They also found that prior to takeoff the aircraft had not been de-iced.
The accident most probably happened because of the aircraft having been overloaded and improperly de-iced.
Airlines and airports ensure that aircraft are properly de-iced before takeoff whenever the weather involves icing conditions.
The aircraft was de-iced with of de-icing fluid, but not checked afterwards for remaining ice by the de-icing personnel.
The fish is headed, gutted, de-iced and de-scaled.
The fish is be-headed, gutted, de-iced and de-scaled.
In this case, when the jet bridge retracts, it could damage the aircraft if that area has not been properly de-iced.
The aircraft was de-iced and the altimeters set and cross-checked.