SDR SRAA970415

Service difficulty report · Scavenge Line · Boeing 747212B

Difficulty date: April 23, 1997
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N745SJ
Make and model: Boeing 747212B
Aircraft serial: 20888
Engine: Pwa JT9D7J
System (JASC): 7261 · Turbine Engine Oil System
Part: Scavenge Line
Condition: Loose
Location: Nr 4 Engine
Stage of operation: CR
Nature of condition: K, J
Precautionary procedure: A

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

What was found

DURING FLIGHT, NR 4 ENGINE OIL QUANTITY DROPPED TO 1.2 GAL, OIL PRESSURE AT 60 PSI WITH OIL PRESSURE LIGHT FLASHING. SHUT DOWN NR 4 ENGINE AND ACCOMPLISHED AIR TURNBACK TO VCP. INSPECTED NR 4 ENGINE AND FOUND MISSING AND LOOSE BOLTS ON OIL SCAVENGE LINE TO ANGLE GEARBOX, ITEM IS BEING REPAIRED.

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