SDR 99ZZZX4009

Service difficulty report · Carbon Seal · Boeing 75724APF

Difficulty date: October 7, 1999
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N426UP
Make and model: Boeing 75724APF
Aircraft serial: 25457
Engine: Pwa PW2040
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Carbon Seal
Condition: Failed
Location: Nr 2
Part time: 1,326 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

TEAR DOWN INSPECTION REVEALED NR 2 CARBON SEAL FRACTURED APPROXIMATELY .250 INCH WIDE BY 2.300 INCHES LONG AND FAILED SECTION ADHERED TO SEAL PLATE FACE. LOCKING TABS OF 6TH DISK TIE RODS LIBERATED, POSSIBLE FRACTURE CAUSE. P & W ENGINEERING E.H., IS CONDUCTING INVESTIGATION.

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