# SDR AALA2020042079004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2020
- Submitted: April 20, 2020
- Operation: Air carrier
- Aircraft: [N540UW](https://openairdocs.org/aircraft/N540UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4107
- Aircraft time: 34,406 hours, 13,475 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Bottle
- Condition: Low Pressure
- Location: L4 Door
- Stage of operation: NR
- 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/AALA2020042079004

## Discrepancy

AIRCRAFT NOT GROUNDED - L4 DOOR, PRESSURE WARNING  YELLOW, DOES NOT AGREE WITH AIRCRAFT STATUS. SERVICED L4 DOOR ASSIST BOTTLE, PER AMM 52-22-00-614-002-A, ALL INDICATIONS NORMAL AT THIS TIME.

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