# SDR AALA202412165614

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2024
- Submitted: December 16, 2024
- Operation: Air carrier
- Aircraft: [N997AA](https://openairdocs.org/aircraft/N997AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7349
- Aircraft time: 23,077 hours, 9,130 cycles
- System (JASC): [2930 · Hydraulic Indicating System](https://openairdocs.org/jasc/2930)
- Part: Sensor
- Condition: Faulted
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202412165614

## Discrepancy

AIRCRAFT WAS GROUNDED: HYD B RSVR LO LVL AND ASSOCIATED LO PRESS IN FLT AFTER TAKEOFF. DECESION MADE TOP RETURN TO DFW EMERGENCY DECLARED LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED LOW LEVEL SENSOR PER AMM 29-12-41.

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