Service difficulty report · Bearing Housing

Difficulty date
July 4, 1997
Submitted
March 26, 2000
Operation
General aviation
Engine
Pwa PW118
Part
Bearing Housing
Part number
310641201
Condition
Burning Damage
Location
6&7 Bearing Area
Part time
17,820 hours
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

(CAN) THE ENGINE WAS SENT TO R&O FOR REPLACEMENT OF A TIME EXPIRED HP IMPELLER AND FOR AN HSI. DISASSEMBLY FOUND THERE WAS UNUSUAL DAMAGE TO THE PT1 STATOR PT1 DISK. THERE HAD BEEN A FIRE IN THE FORWARD CAVITY CAUSED BY OIL LEAKAGE FROM THE #6 AND #7 BEARING AREA. RESULTING DAMAGE WAS SUSTAINED BY THE PT1 DISK AND BLADES, FRONT DISK SEAL, PT1 STATOR AND BAFFLES, #6 AND #7 BEARING HOUSING BAFFLE AND INSULATION BLANKET. THE SPECIFIC CAUSE OF THE OIL LEAKAGE WAS NOT DETERMINED WITH ANY DEGREE OF CERTAINTY.