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Posted for Don Skeele <dpske@teleport.com:

Commentws about vibrations/resonance etc.  My 235/320 at 600 hrs has had a
low pitch buzz which went away when a replaced the left outboard elevator
hinge, ( it had some play in it). WIth the noise cancelling headsets, I
might not have heard this problem.  By the way this vibration may have
caused the elevator control horn to waller out necessitating drilling out
the horn and using a 5/16" rod end bearing. Alls tight now and no buzz.
                                                        In my comments the other day about fuel lines, the polyurathane
tubing size is not 1/8" but 1/4'... Sorry bout that !!! Don Skeele (503)
769-2563 dpske@teleport.COM

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