SDR AALA202209094454

Service difficulty report · O-Ring · Airbus A300*

Difficulty date: August 26, 2022
Submitted: September 9, 2022
Operation: Air carrier
Aircraft: N723UW
Make and model: Airbus A300*
Aircraft serial: 1109
Aircraft time: 61,136 hours, 35,993 cycles
System (JASC): 4990 · APU Oil System
Part: O-Ring
Condition: Leaking
Location: Zone 100 - Fuse
Component: Apu · Honeywell · 1319A
Component part number: 38007081
Stage of operation: DE
How discovered: O
Nature of condition: B
Precautionary procedure: K

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

What was found

AIRCRAFT WAS GROUNDED: DURING DECENT ODOR OF DIRTY SOCKS/OIL FUME SMELL ON FLIGHT DECK. ODOR WAS NOT PRESENT IN PASSENGER CABIN ACCORDING TO FLIGHT ATTENDANTS. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **ORIGINAL REPORT WAS ALA202208291146** MAINTENANCE REPLACED APU OIL COOLER, REPLACED APU OIL COOLING FAN O-RINGS (AALA202209094454) AND APU OIL COOLING FAN TRANSFER TUBE (AALA202209096343). A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ODORS BEING NOTED