SDR 95ZZZX876

Service difficulty report · Oil Return Line · Boeing 747122

Difficulty date: February 5, 1995
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N4710U
Make and model: Boeing 747122
Aircraft serial: 19755
System (JASC): 7920 · Engine Oil Distribution (Airframe Furnished)
Part: Oil Return Line
Condition: Loose
Location: Nr 1 Engine
Stage of operation: CR
Nature of condition: K, J
Precautionary procedure: E

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

What was found

HNL - AT 1815Z, EN ROUTE, ENGINE OIL QUANTITY DROPPED TO ZERO AND OIL PRESSURE STARTED TO FLUCTUATE. OIL TEMPERATURE AT 100 DEGREES. SIMULTANEOUSLY, NR 1 ENGINE OIL PRESSURE LIGHT STARTED BLINKING. ENGINE SHUT-DOWN AT 1816Z. LANDED IN HNL UNEVENTFUL. MAINTENANCE FOUND A LOOSE LINE CONNECTION AT BACKGEAR BOX RETURN LINE. RETORQUED LINE CONNECTION. PERFORMED ENGINE LEAK CHECK. RESULTS: SATISFACTORY. AIRCRAFT RELEASED FOR SERVICE.