Originally Posted by
Q-SKI
Remember the method well, it was still more reliable than the infernal rotor tune box that followed! Any one remember BIM’s as well?
I remember getting many false "BIM" captions - and one very notable one which wasn't false...we were extremely lucky that blade didn't fracture - only the front part of the main D spar was left and "on it's way"; everything else aft of that was cracked through.