I was never happy with the finding that it was the Engineer's fault that the Britannia ended up in the mud at Khormaksar. He wasn't a new boy at all, but a very experienced man. To get into reverse pitch the Engineer had to pull the reversing lever aft then move it slightly to the left and finally slightly forward, that last movement was always stressed during training to be vital because it ensured that the single micro-switch which controlled all 12 solenoids that had to be energised to go into brake dwell was activated. I don't think that a thorough technical inspection could be carried due to operational pressures at the time. Crew error was the easy diagnosis.