SDR DLL10992759

Service difficulty report · Pump · Lkheed 10113851

Difficulty date: December 15, 1999
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N1731D
Make and model: Lkheed 10113851
Aircraft serial: 193C1200
System (JASC): 7261 · Turbine Engine Oil System
Part: Pump
Condition: Weak
Location: Nr 1 Engine
Part time: 22,249 hours
Stage of operation: CL
Nature of condition: B, J
Precautionary procedure: A

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

What was found

A/C RETURNED FROM FLIGHT WITH A NR 1 ENGINE VIBRATION. FOUND THAT ENGINE WAS HIDING OIL IN GEAR CASE RESULTING IN A VIBRATION AT HIGHER POWER SETTINGS. GROUND RAN ENGINE AT HIGHER POWER SETTINGS UNTIL OIL SCAVENGED FROM GEAR CASE AND DRAINED OFF EXCESS AS ENGINE WAS OVER SERVICED DUE TO HIDDEN OIL. ALSO, REPORTS OF SMOKE IN CABIN DUE TO OIL VAPOR IN CABIN FROM OVER SERVICED ENGINE. REPLACED ENGINE.