Service difficulty report · Oil System · Boeing 737823

Difficulty date
April 27, 2026
Submitted
April 28, 2026
Operation
Air carrier
Aircraft
N969AN
Make and model
Boeing 737823
Aircraft serial
29546
Aircraft time
69,413 hours, 29,388 cycles
Part
Oil System
Condition
Leaking
Location
Apu
Part time
32,827 hours, 13,754 cycles
Component
Apu · Hnywl
Component part number
22064002
Stage of operation
CR
How discovered
O
Nature of condition
K, B
Precautionary procedure
O

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

What was found

AIRCRAFT WAS NOT GROUNDED: REPEATED WRITE UP. MUSTY ODOR IN THE FLIGHT DECK AND AFT GALLEY. ODOR OF DIRTY SOCKS AND BURNING RUBBER REPORTED FROM FLIGHT ATTENDANT IN THE AFT GALLEY. ACCOMPLISHED WORK CARD 08L00021001. FOUND LT AND RT PACK BAY TO HAVE OIL RESIDUE ON DUCTING NEAR ACM. APU HAS INTERNAL LEAK REQUIRES REPLACEMENT. REMOVED AND REPLACED APU. PER J/C 08L30049001. OPS CHECK GOOD.