What was found
THE APU WHEN "COLD" WITH AIR SELECTED ON EMITS "SMOKE" INTO CABIN. IT SMELLS LIKE "OILY" EXHAUST. MAINTENANCE SAW SLIGHT SMOKE, APU WAS WARM, AND PRODUCED AND ODOR. INSTALLED DIFFERENT APU. OPS AND LEAK CHECKED GOOD.
- Difficulty date
- November 15, 2013
- Submitted
- November 21, 2013
- Operation
- Air carrier
- Aircraft
- N421QS
- Make and model
- Gulstm GIVXG450
- Aircraft serial
- 4114
- Aircraft time
- 4,233 hours, 2,005 cycles
- System (JASC)
- 4900 · Airborne Auxiliary Power Unit (APU) System
- Part
- Apu
- Part number
- 38007941
- Part serial
- P231
- Condition
- Smoke
- Part time
- 3,496 hours
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- B
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.