# SDR AALA202607091442

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 2026
- Submitted: July 9, 2026
- Operation: Air carrier
- Aircraft: [N405AN](https://openairdocs.org/aircraft/N405AN), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 8800
- Aircraft time: 24,108 hours, 6,611 cycles
- System (JASC): [2824 · Fuel Transfer Valve](https://openairdocs.org/jasc/2824)
- Part: Transfer Valve
- Condition: Fault Message
- 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/AALA202607091442

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO PHL DUE TO THE FLIGHT CREW REPORTING THAT DURING INITIAL CLIMB FUEL ACT TRANSFER FAULT ON ECAM. THE FLIGHT CREW ACCOMPLISHED THE ECAM PROCEDURES AND LANDED SAFELY AT PHL WITHOUT FURTHER INCIDENT. MAINTENANCE PERFORMED TSM TASK 28-28-00-810-874-A, ACT TANK 1 WAS AT 1100 LBS WHILE ACT TANK 2 WAS AT 0, TRANSFERED FUEL AND CORRECTED FUEL-QUANTITY MEASUREMENTS, MESSAGE CLEARED, NO OTHER FAULTS NOTED AT THIS TIME.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.