What was found
AT GATE IN SFO, APU WAS HASTILY SHUT DOWN WHEN MECH NOTICED HEAVY BLUE SMOKE COMING FROM THE EXHAUST. ACCOMPLISHED APU PERFORMANCE CHECK, OPERATION NORMAL. NO FAULTS.
- Difficulty date
- August 18, 2011
- Submitted
- September 12, 2011
- Operation
- Air carrier
- Aircraft
- N502UA
- Make and model
- Boeing 757222
- Aircraft serial
- 24623
- Aircraft time
- 74,532 hours, 23,410 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 4920 · APU Core Engine
- Part
- Apu
- Condition
- Smoke
- Location
- Apu Bay
- Stage of operation
- IN
- 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.