The subsequent investigation by the Marine Accident Investigation Branch ( MAIB ) made several recommendations to improve safety.
22.
The British Government's Marine Accident Investigation Branch ( MAIB ) concluded its reappraisal of evidence in 1992.
23.
Recovered flight data noted by the Air Accident Investigation Branch suggests that the helicopter engines remained powered until impact.
24.
An Air Accidents Investigation Branch inquiry recommended a review of arrangements for aircraft taking off or landing towards the M11.
25.
The accident led to a complete review by the Rail Accident Investigation Branch of all pedestrian level crossings at stations.
26.
The Department of Transport said that members of the Air Accidents Investigation Branch were on their way to the crash scene.
27.
The Air Accident Investigation Branch said in a statement it had launched an inquiry to establish the cause of the accident.
28.
On 26 February, an interim report published by the Rail Accident Investigation Branch outlined the current progress of the investigation.
29.
The Belgian Civil Aeronautics Administration wrote the report and the British Air Accidents Investigation Branch had accredited personnel assisting the investigation.
30.
On 22 November the British Air Accidents Investigation Branch announced they had joined the investigation and had dispatched investigators to Kazan.
