Service difficulty report · Fork · Hiller UH12E

Difficulty date
February 1, 2017
Submitted
February 1, 2017
Operation
General aviation
Make and model
Hiller UH12E
Aircraft serial
2269
Aircraft time
10,834 hours
Part
Fork
Part number
521103
Condition
Mismanufactured
Location
Main Rotor
Stage of operation
IN
How discovered
V
Nature of condition
W
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DISCOVERED THE OUTBOARD TENSION TORSION PIN BORES ARE MISALIGNED. DISCOVERED BORES NOT BEING CONCENTRIC BY MANUFACTURING A WORKAID THAT FIT INTO OUTBOARD TT PIN BORE AND MEASURED T.I.R. WITH A LAST-WORD INDICATOR.

More about the Hiller UH-12E