Service difficulty report · Stator

Difficulty date
April 2, 2019
Submitted
August 17, 2020
Operation
General aviation
Engine
Pwa PW120A
Part
Stator
Part number
3055642CL
Condition
Damaged
Location
Engine
Part time
10,286 hours
Stage of operation
IN
How discovered
9
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) ENGINE WAS RECEIVED FOR CONVERSION TO A PW121. DURING RECEIVING INSPECTION A METALLIC NOISE WAS HEARD WITHIN THE TURBOMACHINE AND THE ENGINE WAS PARTIALLY DISASSEMBLED IN ORDER TO INVESTIGATE.THE LP STATOR INNER BAFFLE WAS FOUND TO BE LIBERATED AND ABLE TO MOVE FREELY FORWARD AND AFT. THIS MOVEMENT ALLOWED THE BAFFLE TO CONTACT THE REST OF THE STATOR ASSEMBLY RESULTING IN THE AUDIO. HEAVY RUBBING WITH MISSING MATERIAL WAS NOTED ON THE STATOR BAFFLE AND LP DISK ASSEMBLY. FRACTURED RETENTION RIVETS WERE FOUND WITHIN THE STATOR ASSEMBLY HOWEVER THE EXACT CAUSE OF THE FRACTURED RIVETS COULD NOT BE DETERMINED. (TC# 20190403013)