# SDR FKEA202602230001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2026
- Submitted: February 23, 2026
- Operation: Air carrier
- Aircraft: [N3410](https://openairdocs.org/aircraft/N3410), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605649
- Aircraft time: 11,819 hours, 6,485 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Turbine Case
- Part number: 38467331
- Condition: Cracked
- Location: Apu
- Part time: 6,820 hours, 9,457 cycles
- Component: Apu, Hnywl, RE100XL
- Component part number: 38007221
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FKEA202602230001

## Discrepancy

CREW AND PASSENGERS NOTICED THE SMELL OF EXHAUST AFTER THE APU WAS STARTED ON THE DECENT FOR LANDING. MAINTENANCE WAS CALLED TO TROUBLESHOOT THE CAUSE AFTER LANDING. ON INSPECTION, THEY FOUND THE APU TURBINE HOUSING HAD A CRACK IN IT AT ABOUT THE 5 O'CLOCK POSITION, ADJACENT TO THE FUEL NOZZLE. THE APU WAS PLACED ON MEL AND IS BEING REMOVED AND A LOANER INSTALLED.

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