What was found
AIRCRAFT WAS GROUNDED: UPON START OF APU SMOKE AND FUMES FILLED THE CABIN AND COCKPIT. AIRCRAFT RETURNED TO BCN, LARGE OIL LEAK FOUND IN APU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED.** (OPEN)
- Difficulty date
- January 28, 2024
- Submitted
- January 31, 2024
- Operation
- Air carrier
- Aircraft
- N789AN
- Make and model
- Boeing 777223
- Aircraft serial
- 30252
- Aircraft time
- 89,233 hours, 11,589 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Oil System
- Part number
- UNKNOWN
- Condition
- Leaking
- Location
- Apu
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- K, B
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.