What was found
AIRCRAFT WAS GROUND: MOLD SMELL COMING FROM PACKS DURING CLIMB AND DESCENT. FOUND APU OIL COOLING FAN LEAKING, REPLACED COOLING FAN AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 49-52-51. NO ODORS NOTED.
- Difficulty date
- October 26, 2021
- Submitted
- October 29, 2021
- Operation
- Air carrier
- Aircraft
- N552UW
- Make and model
- Airbus A321231
- Aircraft serial
- 4957
- Aircraft time
- 32,283 hours, 12,115 cycles
- System (JASC)
- 4900 · Airborne Auxiliary Power Unit (APU) System
- Part
- Cooling Fan
- Part number
- 361614011
- Part serial
- P1669C
- Condition
- Leaking
- Location
- Apu
- Stage of operation
- CL
- How discovered
- 9
- Nature of condition
- B
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.