What was found
AIRCRAFT RETURNED TO BLOCKS DUE TO SMOKE IN THE CABIN. UNABLE TO CLEAR CABIN WITH ANY PACK BLEED COMBINATION. *S/D* REMOVED AND REPLACED WATER SOCKS, REPLACED O-RINGS ON BOTH SPEED SENSORS AND APU CHECKS OK.
- Difficulty date
- October 29, 1996
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N922UA
- Make and model
- Boeing 737522
- Aircraft serial
- 26642
- Engine
- Ge CFM56*
- System (JASC)
- 4900 · Airborne Auxiliary Power Unit (APU) System
- Part
- O-Ring
- Part number
- AS3209014
- Condition
- Saturated
- Location
- Apu
- Stage of operation
- TX
- Nature of condition
- B
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.