Originally Posted by
Twist & Shout
A lot of posters are talking about the helicopter being “signed out” or “ok’d” by the engineering staff.
No mention of this in the report.
Just saying...
Also from the report:
The difficulties in fault finding should not be underestimated, certain vibration and control faults can be difficult to isolate..
We had a 365 which was reported as having a slight kick in yaw on the ground and in the air. Much fault finding of the yaw system ensued with no answer.
Two of us after discussing it decided to take a new tack.
Kick on the ground, nosewheel castoring bearing had a hard spot.
Kick in the air, roll actuator problem.
My favourite
Aircraft shaking on the ground.
Main rotor balancing and structural inspections followed by undercarriage parts replaced. No improvement.
Watching the aircraft ground running from a slightly raised location the engineer with me said, " It looks as if it is in negative pitch"
We checked the rigging and the blades were about 2 degrees below allowable min pitch.
Airtested and pilot returned saying that was much better.
Vibration gone?
Yes and now you dont have to fly it with the collective under you arm pit.
Speechless.