Seems likely it was a significant link in the chain - the other links probably being that the aircraft should never have received certification against FAR29 in the first place, and the flawed information circulating about crew actions in the event of gearbox oil pressure loss
Back in. HC, do you, or others, think perhaps the the requirements of 927, while admirable in intent, may just be a little ambitious given the task being asked of a MGB and the state of the art.