SDR 97ZZZX3544

Service difficulty report · Bearing · Hiller UH12E

Difficulty date
July 19, 1997
Submitted
March 26, 2000
Operation
General aviation
Make and model
Hiller UH12E
Engine
Lyc VO540C2A
Part
Bearing
Part number
HPPBR49
Condition
Mismanufactured
Location
T/R Gearbox
Stage of operation
IN
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

NEW REPLACEMENT BEARING RECEIVED WITH INSTRUCTIONS FROM MRC (BEARING MFG), AND HILLER SL UH12-25-1 DESCRIBING INSTALLATION INSTRUCTIONS WITH REGARDS TO THE FILING NOTCHES AND BEARING MARKINGS ON THE OUTER RACE. THESE INSTRUCTIONS ORIENT THE BEARING SO THE MAJOR THRUST LOAD IS ON THE RACES THAT DO NOT HAVE FILING NOTCHES. THIS BEARING WAS RECEIVED WITH MARKINGS OPPOSITE THE WRITTEN INSTRUCTIONS. BEARING RETURNED TO HILLER.

More about the Hiller UH-12E