SDR M9QR564N

Service difficulty report · Airseal

Difficulty date
May 21, 1998
Submitted
March 26, 2000
Operation
General aviation
Filed by
M9QR564N
GE Engine Services, LLC
Engine
Pwa JT8*
Part
Airseal
Part number
762425
Condition
Cracked
Location
Lp Turbine
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

WHILE RE-EVALUATING THE DATA FOR TI-JT8D-117 ON WELDING OF THE KNIFE EDGE AIRSEALS ON 2ND, 3RD, AND 4TH STAGE ROTATING AIRSEALS, CRACKING WAS DETECTED IN THE PEDESTAL RADIUS. THE PART WAS DAMAGED AS THE RESULT OF THE LASER WELDING PROCESS. THE INVESTIGATION IS CONTINUING. REF: OPERATOR CONTROL NR 98ZZZX2242 AND 98ZZZX2243. (X)