Cazatou
Your #5639
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..."
This isn't quite correct. There were important changes to the FADEC code after the Mull crash, and a different CPU used. From NAO report Feb 2000:
"As a result of the concerns raised about the software, the FADEC manufacturer has addressed some of the anomalies within the software, and produced an improved version which was then subjected to a Sneak and Traceability analysis to gain further confidence in its integrity. In September 1998 the Department, with the Royal Air Force’s consent, issued full Controller Aircraft Release for the Chinook Mk2, removed the internal carriage all-up mass restriction for internal loads and allowed the Mk2 fleet to operate to the maximum payloads specified by Boeing which are 21 per cent higher than those specified in the Staff Requirement."