SDR P5CA0401183

Service difficulty report · Seal · Boeing 747283B

Difficulty date: August 28, 2004
Submitted: August 31, 2004
Operation: Air carrier
Aircraft: N921FT
Make and model: Boeing 747283B
Aircraft serial: 21575
Aircraft time: 63,006 hours, 14,109 cycles
Engine: Pwa JT9D70A
Engine time: 52,076 hours, 11,622 cycles
System (JASC): 7261 · Turbine Engine Oil System
Part: Seal
Part number: M832481216
Condition: Leaking
Location: Nr 1 Engine Oil
Stage of operation: CR
How discovered: O
Nature of condition: K, J
Precautionary procedure: E, A

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

What was found

DURING CRUISE, NR 1 ENG OIL QTY GRADUALLY DECREASED, OIL PRESSURE & TEMP NORMAL, CLOSELY MONITERED OIL QTY, WHEN ZERO OIL PRESSURE INDICATED, GAUGE FLUCTUATED & OIL PRESSURE LIGHT FLICKERED, SHUTDOWN ENGINE, ENGINE FAILURE / SHUTDOWN CHECKLIST ACCOMPLISHED. OIL PRESSURE STAYED 20-30 PSI AFTER SHUTDOWN. INSPECTED NR 1 ENG, FOUND NR 1 EDP DRIVE SHAFT SEAL DETERIORATED. REMOVED AND REPLACED SEAL, PERFORMED INSP PER 72-00-00 & PERFORMED EDP TEST PER AMM 29-11-05.