Originally Posted by
JimEli
Full power runs in a helicopter chained to the ground?
Not sure that's a statement about the helicopter, or the pilots...
It used to be SOP for new ac just off the production line.
Stories from a tent camp:
I was told years ago of a brass blade weight slug violently departing a Bell 47 Blade at full RPM ..outside a hangar near Toronto.
The blade weight penetrated the hangar, a couple of walls therein and came to rest in the wall of the startled maintenance dept secretary’s office mere feet from her head.
Meanwhile the newly overhauled G4-A thrashed itself to pieces out on the ramp. No one was hurt but there was considerable excitement for a while. Fortunately both pilot and engineer were strapped in and shaken but not stirred.
Another tail was of a 205 test that consisted of attaching a choker firmly secured to the ground to the cargo hook and pulling full power for some kind of check…topping perhaps.
Power was then to be reduced the ac landed, shutdown and adjustments made.
Well after 5 or 6 runups the last run is satisfactory and the pilot decides to, at full power to punch off the choker, The instantaneous rate of climb was spectacular the G forces startling.
When order was restored and the aircraft landed it was found that the airframe was severely bent. The pilot also had a sore neck because the forces had snapped his head and helmet violently forward
Don’t know if this is true but it was a good story.