SDR NACA20130116001

Service difficulty report · Seal · Boeing 737232

Difficulty date: January 15, 2013
Submitted: January 17, 2013
Operation: Air carrier
Aircraft: N320DL
Make and model: Boeing 737232
Aircraft serial: 23092
Aircraft time: 71,694 hours, 54,629 cycles
Engine: Pwa JT8D15A
Engine time: 39,740 hours, 30,462 cycles
System (JASC): 7261 · Turbine Engine Oil System
Part: Seal
Condition: Failed
Location: Oil Pump
Stage of operation: AP
How discovered: O
Nature of condition: K
Precautionary procedure: E

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

What was found

MECHANICAL INTERUPTION,NR 1 ENGINE SHUTDOWN IN FLIGHT DUE TO LOSS OF OIL QUANTITY AND DECREASE IN OIL PRESSURE. WINDMILL TIME APPROX. 3-4 MINUTES WITH OIL PRESSURE AT 35 PSI AT SHUTDOWN. BORESCOPED ENGINE THROUGH LEFT IGNITOR HOLE BOSS OF LOCAL OIL LINE. NO EVIDENCE OF COMPROMISED OIL TUBES. REMOVED OIL PUMP FOR INSPECTION REVEALED BLOWN SEALS. OIL PUMP WAS REMOVED AND REPLACED WITH NEW SEALS PER P&W MM 72-61-00-430-009. PERFORMED HIGH POWER ENGINE RUN TEST A, B AND C REF: B737-200 MM 71-00-00 PG 508.