They thought that, in the Pete Barnes accident, the passenger hit the overhead switches with his headset that knocked out the buzz bars lol.
Now we know the real reason. You fly in the cruise at 85% torque and flat pitch in a millisecond and try and not hit the top of your headset on the overhead console.
Follow that with a snap turn in cloud at night and you have lost all your instruments and light.
Well done Pete!
And in both incidents, well done the 109 Power - everybody walked away.