# SDR AALA202610269844

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 23, 2026
- Submitted: October 26, 2026
- Operation: Air carrier
- Aircraft: [N434AN](https://openairdocs.org/aircraft/N434AN), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 10513
- Aircraft time: 21,112 hours, 5,814 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Computer
- Condition: Fault Message
- Location: Zone 100
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202610269844

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO PHL DUE TO THE FLIGHT CREW REPORTING THAT THE APU BLEED WAS USED FOR TAKEOFF AND 10 MINUTES AFTER SHUTTING DOWN APU IN CLIMB THEY RECEIVED AN AIR APU BLEED LEAK ECAM MESSAGE - THE FLIGHT CREW TURNED OFF ENG 1 BLEED AND PACK 1 PER QRH - THE FLIGHT CREW REPORTED THAT THEY COULD NOT CONTINUE FLIGHT AND AVOID ICING CONDITIONS WITH FORECASTED WEATHER AHEAD - THE AIRCRAFT LANDED SAFELY AT PHL WITHOUT FURTHER INCIDENT -MAINTENANCE PERFORMED A GROUND SCAN TEST OF BOTH BMC1 AND BMC2 WITH NO FAULTS NOTED AT THIS TIME

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