Service difficulty report · Bolts

Difficulty date
October 23, 1997
Submitted
March 26, 2000
Operation
General aviation
Engine
Pwa PW121
Part
Bolts
Part number
MS969611
Condition
Fractured
Location
1st Stg Stator
Part time
16,178 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) TURBOMACHINE SENT FOR INVESTIGATION AND REPAIR AFTER OPERATOR REPORTED POWER TURBINE DAMAGE. THE CAUSE OF THE PT DAMAGE WAS A FAILURE OF SEVEN, 1ST STAGE STATOR RETAINING BOLTS. FAILURE OF THE 1ST STAGE STATOR RETAINING BOLTS APPEARS TO BE THE RESULT OF CORROSION AT THE REAR FLANGE OF THE TURBINE INTERSTAGE CASE WITH ALL OTHER DAMAGE OBSERVED BEING SECONDARY.