# SDR DALA2024041704504

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2024
- Submitted: April 17, 2024
- Operation: Air carrier
- Aircraft: [N374NW](https://openairdocs.org/aircraft/N374NW), registered now
- Make and model: Airbus A320-212
- Registry model: [Airbus A320-212](https://openairdocs.org/model/airbus-industrie-a320-212) (OpenAirDocs)
- Aircraft serial: 1646
- Aircraft time: 64,115 hours, 30,446 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Plenum
- Part number: UNKNOWN
- Condition: Contaminated
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2024041704504

## Discrepancy

WHEN SWITCHING TO APU BLEED AFTER ENGINE SHUTDOWN WE SMELLED STRONG FUEL SMELL.  PERFORMED GVI OF APU COMP/T, FOUND FUEL INGESTED IN PLENUM AND WICKING OUT OF ACCESS DOORS. FOUND NO BAD FUEL LINES/LEAKS ON APU ASSY. SUSPECT BAD BAD DRAIN ASSY BELLOWS ON APU PLENUM DOOR ASSY.  DEBRIEFED CREW FUEL ODOR IN COCKPIT ONLY/APU BLEED ON. CROSSBLEED OFF. PACK BOTH ON AND BOTH ENG OFF.  PERFORMED PACK ECS BURNOUT PER TC 2100-2005. AFT BULKHEAD PANELS OF FWD CARGO PIT REQ INSTALLATION WIP BF545168. INSTALLED FWD CARGO AFT BULKHEAD PANELS WIP 724033. WORK CARDS 0550-2002, 4900-2001, & 2100-2005 ALL COMPLETED. (LP: 5846265)

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