Shy Torque
Your # 5631
Please try to get it right. Boscombe Down did not "Ground" the Mk2 Chinook; it ceased Trials Flying until such time as clarification was provided in respect of engine control malfunctions that had occurred on the ground during start up checks. Such clarification was completed and accepted by Boscombe Down on 24 October 1994 and Test flying recommenced without any changes to the FADEC system.
Still, it makes a nice story the way you tell it - doesn't it?