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Old 7th Jun 2006, 12:34
  #561 (permalink)  
Flyting
 
Join Date: Apr 2006
Location: In the mountains
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Question AS 350 SHORT SHAFT FAILURE

Has anyone out there ever experienced a short shaft failure in a squirrell before (shaft between the engine and the main gearbox), or have any idea on what will happen there after and the published emergency reaction to it. As I see it, the sudden increase in RPM after the shaft breaks will be felt through the tail rotor. Will the governor react and reduce the RPM back to normal?

You'll get a heavy yaw, the RRPM horn goes off, enter an auto, then what?
  1. Do you cut the engine to take away the t/r going nuts and then end up in a side ways position at the end of the flare and a chance of rolling
  2. Cut the engine and slide it in with a bit of forward speed keeping the tail fin effective
  3. Reduce the fuel flow controlling the amount of thrust to the t/r
  4. Keep the engine on during the auto???
So far I can't find anything on this in any manuals...
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