What was found
ODOR AND SMOKE IN THE CABIN. EMERGENCY DECLARED. RETURNED TO DEPARTURE. AIRCRAFT WAS GROUNDED. LANDING UNEVENTFUL. REMOVED AND REPLACED AUXILIARY POWER UNIT OIL CAP GASKET IAW AMM 12-12-01. LEAK AND OPERATIONAL CHECK GOOD.
- Difficulty date
- February 8, 2017
- Submitted
- February 10, 2017
- Operation
- Air carrier
- Aircraft
- N501AA
- Make and model
- Doug DC982
- Aircraft serial
- 49738
- Aircraft time
- 77,865 hours, 41,415 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Gasket
- Condition
- Leaking
- Location
- Apu Oil Cap
- 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.