# SDR AALA202402163728

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2024
- Submitted: February 16, 2024
- Operation: Air carrier
- Aircraft: [N906AA](https://openairdocs.org/aircraft/N906AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7651
- Aircraft time: 19,866 hours, 7,854 cycles
- System (JASC): [2560 · Emergency Equipment](https://openairdocs.org/jasc/2560)
- Part: Cylinder
- Part number: UNKNOWN
- Condition: Low Pressure
- Location: L4 Door Assist
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202402163728

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: DURING PS CHECK, FOUND L4 DOOR, EMERGENCY ASSIST NITROGEN CYLINDER PRESSURE BELOW LIMITS AND NEEDS SERVICE. SERVICED DOOR L4 EMERGENCY ASSIST NITROGEN CYLINDER TO PROPER LEVEL.

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