What was found
AIRCRAFT WAS GROUNDED. SMOKE IN CABIN AFTER AIR CONDITIONING PACKS WERE RUNNING FOR APPROXIMATELY 20 MINUTES. REMOVED AND REPLACED AUXILIARY POWER UNIT LOW OIL PRESSURE SWITCH IAW AMM 49-90-03. OPERATIONAL AND LEAK CHECK GOOD.
- Difficulty date
- January 1, 2017
- Submitted
- January 5, 2017
- Operation
- Air carrier
- Aircraft
- N967TW
- Make and model
- Doug DC983
- Aircraft serial
- 53617
- Aircraft time
- 49,164 hours, 24,330 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Pressure Switch
- Part number
- 3732052
- Condition
- Leaking
- Location
- Apu
- Stage of operation
- UK
- How discovered
- O
- Nature of condition
- K, B
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.