# SDR 2026F00093

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2026
- Submitted: May 4, 2026
- Operation: General aviation
- Aircraft: [N525B](https://openairdocs.org/aircraft/N525B), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0010
- Aircraft time: 6,720 hours, 4,839 cycles
- Engine: Wilint FJ443A
- Engine time: 6,591 hours, 4,745 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Fdu
- Part number: 119148
- Part serial: CL9ATW0343
- Condition: Faulted
- Location: Nr 1 Engine
- Part time: 3,824 hours, 1,280 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026F00093

## Discrepancy

LEFT ENGINE SHUT DOWN ON ITS OWN AS WE PULLED POWER BACK FOR INITIAL DESCENT FROM FL430. FIRST INDICATION WAS N1 READING ZERO. NEXT INDICATION WAS A GENERATOR FAIL, WARNING LIGHT. OIL PRESSURE WAS NOW AT 9 PSI. NO VIBRATION NOTED. SUCCESSFULLY RESTARTED ENGINE USING STARTER ASSIST PROCEDURE PER SOP. EXTERIOR INSPECTION AFTER LANDING SHOWED NORMAL OIL LEVEL AND NO OIL BYPASS INDICATION. DOWNLOADED ENGINE ECTM DATA, SENT FOR ANALYSIS. WE WERE RECOMMENDED TO REPLACE THE FDU'S. THIS COINCIDES WITH WISB73-1040R3 - FUEL DELIVERY UNIT REPLACEMENT. WE COMPLIED WITH THE RECOMMENDED CHANGES AND OPERATIONAL CHECKS WERE GOOD. NO FURTHER ISSUES NOTED.

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