SDR DALA2025102307761

Service difficulty report · Bleed Air Sys · Boeing 737932ER

Difficulty date: October 19, 2025
Submitted: October 23, 2025
Operation: Air carrier
Aircraft: N818DA
Make and model: Boeing 737932ER
Aircraft serial: 31928
Aircraft time: 37,850 hours, 14,614 cycles
System (JASC): 4950 · APU Bleed Air System
Part: Bleed Air Sys
Condition: Contaminated
Location: Apu
Stage of operation: IN
How discovered: O
Nature of condition: C, B
Precautionary procedure: K

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

What was found

(LOG 8004328) ODOR ON T/O DISSIPATED WHILE CLIMBING ODOR RETURNED WHILE ON APPROACH THROUGH FL180. ISOLATED ODOR FROM APU BLEED AIR. PERFORMED OIL DECONTAMINATION. COMPLETED BLACK LIGHT USE AT APU DUCT, LIGHT OIL RESIDUE NOTED. DUCT REASSEMBLED. BLACK LIGHT USED IN PACK COMPARTMENT APU BLEED DUCT, ACM, CONDENSOR, + HEAT EXCHANGER, NO OIL NOTED.