# SDR AALA202605283511

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2026
- Submitted: May 28, 2026
- Operation: Air carrier
- Aircraft: [N116AN](https://openairdocs.org/aircraft/N116AN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6070
- Aircraft time: 42,795 hours, 8,614 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Pressure Switch
- Part number: 38762552
- Condition: Faulted
- Location: Apu
- Component: Apu, Honeywell
- Component part number: 38007081
- 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/AALA202605283511

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO PHL DUE TO THE FLIGHT CREW REPORTING WITH THE LEFT ENGINE IDG INOPERATIVE AND ON MEL, THAT DURING CLIMB THROUGH FL 240 THE APU AUTO SHUTDOWN. THE AIRCRAFT LANDED SAFELY AT PHL AND TAXIED TO THE GATE UNDER ITS OWN POWER, MAINTENANCE REPLACED THE APU LOW OIL PRESSURE SWITCH PER AMM 49-94-14 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK WITH NO FAULTS NOTED.

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