SDR UPS04542421

Service difficulty report · Filter · Boeing 75724APF

Difficulty date: May 25, 2004
Submitted: May 26, 2004
Operation: Air carrier
Aircraft: N420UP
Make and model: Boeing 75724APF
Aircraft serial: 23907
System (JASC): 2420 · AC Generation System
Part: Filter
Part number: 729825H
Part serial: C0918
Condition: Contaminated
Location: Idg
Stage of operation: DE
How discovered: O
Nature of condition: H
Precautionary procedure: B

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

What was found

DESCENDING THROUGH 250, LT GEN OFF LIGHT CAME ON. THEN LT & RT BUSS OFF LIGHTS ILLUMINATED WITH SUBSEQUENT LOSS OF ALL INSTRUMENTS. FOUND CONTAMINATION IN BOTH IDG FILTERS. REPLACED BOTH LEFT AND RIGHT IDG AND OPS CHECKED NORMAL. P/N OFF 729825E, S/N OFF C0607, P/N OFF 729825H, S/N OFF C0918.

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