# SDR DALA2022111407331

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2022
- Submitted: November 14, 2022
- Operation: Air carrier
- Aircraft: [N383DZ](https://openairdocs.org/aircraft/N383DZ), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 8916
- Aircraft time: 10,452 hours, 4,588 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Apu
- Condition: Odor
- Location: Apu Bay
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2022111407331

## Discrepancy

F/A'S REPORTED (AFTER LANDING) A PLASTIC BURNING SMELL IN THE AFT OF THE AIRCRAFT WHEN PASSING 10,000 FT IN THE DESCENT. SMOKE AND FUMES QUESTIONNAIRE IS FILLED OUT. OPENED #1 & #2 ENG COWLING AND REMOVED PNEUMATIC BLEED DUCT ELBOWS TO INSPECT FOR CONTAMINATION. REINSTALLED ELBOWS AT PRESSURE REGULATING VALVES #1 & #2 ENGS. NO OIL CONTAMINATION FOUND. (REF. A321 AMM 36-11 FOR DUCT INST (398826). FOUND APU COOLING FAN LEAKING INTERNALLY. REMOVED APU COOLING FAN PER A321 AMM 49-52. (812430) RE-INSTALLED ORIG VALVE NIS ATL C/W ECS DECONTAMINATION PER W/C 2100-2005. PER MCC WILL REQ. APU CHANGE. (290536). R/R APU IAW AMDS CARD 4900-9002 (416220). (REF LOG PG 2489109, 9813706)

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