What was found
AIRCRAFT WAS GNDED. DURING BOARDING THE CABIN BEGAN TO FILL WITH SMOKE. APU AIR WAS TURNED OFF. FOUND THE APU LOW OIL PRESS SWITCH LEAKING. R & R SWITCH & ACCOMPLISHED LEAK CHECK IAW AMM 49-90-03. SYS CHECKED NORMAL.
- Difficulty date
- April 26, 2016
- Submitted
- May 5, 2016
- Operation
- Air carrier
- Aircraft
- N439AA
- Make and model
- Doug DC983
- Aircraft serial
- 49457
- Aircraft time
- 874,375 hours, 417,678 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Pressure Switch
- Part number
- 38761864
- Part serial
- 010922702013
- Condition
- Leaking
- Location
- Apu
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- K, B
- Precautionary procedure
- H
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.