Service difficulty report · Center Tube · Doug DC932

Difficulty date
June 26, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N17533
Make and model
Doug DC932
Aircraft serial
47281
Engine
Pwa JT8D9
Part
Center Tube
Condition
Fractured
Location
Nr 2 Engine
Stage of operation
CR
Nature of condition
B, E, K
Precautionary procedure
A

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

What was found

THE NR 2 ENGINE LOST POWER AT FL 330 WHILE EN ROUTE. THE POWER LOSS WAS ACCOMPANIED BY A DROP IN OIL QUANTITY, VIBRATION, AND ODOR IN THE CABIN. THE AIRCRAFT WAS DIVERTED TO DFW WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE PRESSURE RATIO BLEED CONTROL VALVE LINE CRACKED, THE ENGINE OIL TANK EMPTY, AND METAL IN THE OIL FILTER. THE NR 2 ENGINE WAS REMOVED AND REPLACED. *S/D* SHOP FINDINGS REVEALED HPC CENTER TUBE FRACTURED AND BLEW OPEN. C9 DISC HAD SEVERE DAMAGE AND DEFORMATION DUE TO VERY HIGH TEMP. LPT SHAFT HAD SEVERE SCORING AT THE CENTER TUBE LOCATION.

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