Don't know about that but I do know that two RAF Chinooks subsequently thrashed themselves to bits on 24 & 25 July 1989 after newly replaced aft drive transmission input thrust bearings failed, these having been fitted the wrong way round during manufacture. Very expensive (both never flew again) but fortunately no loss of life.
My recollection of the HC1s during the 80s were of unreliable aircraft that many were reticent to fly-in.
Last edited by Cows getting bigger; 7th Aug 2013 at 18:24.