SDR SWAA041587

Service difficulty report · Bypass Switch · Boeing 7372H4

Difficulty date: June 6, 2004
Submitted: June 9, 2004
Operation: Air carrier
Make and model: Boeing 7372H4
Aircraft serial: 22673
Aircraft time: 70,371 hours, 77,916 cycles
Engine: Pwa JT8D9A
Engine time: 72,175 hours, 82,717 cycles
System (JASC): 7930 · Engine Oil Indicating System
Part: Bypass Switch
Part number: 42D107A1
Part serial: 305
Condition: Faulty
Location: Nr 1 Engine
Stage of operation: NR
How discovered: O
Nature of condition: N
Precautionary procedure: E

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

What was found

INFLIGHT SHUTDOWN, NR 1 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATED IN FLIGHT. OIL TEMPERATURE IN RED PRIOR TO SHUTDOWN. REMOVED AND REPLACED NR 1 ENGINE OIL TEMP BULB, BYPASS SWITCH AND OIL FILTER. REMOVED AND REPLACED NR 1 ENGINE OIL FILTER, CLEANED GROUNDING FLANGE CONNECTOR, PER MM.

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