# SDR AALA202607100988

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2026
- Submitted: July 10, 2026
- Operation: Air carrier
- Aircraft: [N115NN](https://openairdocs.org/aircraft/N115NN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6063
- Aircraft time: 40,467 hours, 9,627 cycles
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Control Unit
- Part number: 300420601
- Part serial: 3509
- Condition: No Test
- Location: Zone 100 - Fuse
- Part time: 40,467 hours, 9,627 cycles
- Stage of operation: CR
- 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/AALA202607100988

## Discrepancy

AIRCRAFT WAS GROUNDED: THE AIRCRAFT DIVERTED TO DEN DUE TO THE FLIGHT CREW REPORTING THAT FUEL WAS TRAPPED IN BOTH ACT TANKS AFTER PERFORMING THE MEL PROCEDUR E. THE AIRCRAFT LANDED SAFELY AT DEN WITHOUT FURTHER INCIDENT. MAINTENANCE REPORTED THAT THE FUEL LEVEL SENSING CONTROL UNIT FAILED THE FUNCTIONAL TEST AND WAS REPLACED PER AMM 28-46-34. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLUISHED WITH NO ISSUES NOTED.

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