SDR IPXA2026022305924

Service difficulty report · Unknown · Boeing 75724APF

Difficulty date: February 20, 2026
Submitted: February 23, 2026
Operation: Air carrier
Aircraft: N426UP
Make and model: Boeing 75724APF
Aircraft serial: 25457
Aircraft time: 32,924 hours, 22,170 cycles
System (JASC): 2120 · Air Distribution System
Part: Unknown
Condition: Odor
Location: Cabin
Stage of operation: CL
How discovered: O
Nature of condition: B
Precautionary procedure: O

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

What was found

REPEAT, STRONG WET SOCK OIL ODOR FROM TAKEOFF TO 20,000 AGAIN ON DESCENT & WHILE PARKED. AIRCREW WILL DOCUMENT MEDICAL HAZARD. REPLACED LT LUBE - SCAVENGE PUMP AMM 70-21-04/401. IDLE ENGINE RUNS WERE COMPLETED, RAN FOR 15 MINUTES. ISOLATED EACH PACK INDIVIDUALLY AND COULDN`T DUPLICATE WET SOCK OIL ODOR.

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