# SDR 2025FA0000583

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2025
- Submitted: August 27, 2025
- Operation: General aviation
- Aircraft: [N327ER](https://openairdocs.org/aircraft/N327ER), registered now
- Make and model: Diamon DA 42
- Registry model: [Diamon DA 42](https://openairdocs.org/model/diamond-aircraft-ind-da-42) (OpenAirDocs)
- Aircraft serial: 42N553
- Aircraft time: 451 hours
- System (JASC): [2822 · Fuel Boost Pump](https://openairdocs.org/jasc/2822)
- Part: Pump
- Part number: D6490281101MOD
- Condition: Out Of Tolerance
- Location: Zone 500
- Part time: 451 hours
- Stage of operation: TX
- How discovered: C
- Nature of condition: Y
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2025FA0000583

## Discrepancy

PULLED DATA AND AT SOME POINT DURING ENGINE OPERATION THE LT ENG ECU A FUEL PUMP DROPPED 600HPA AND NEVER RETURNED TO NORMAL. PERFORMED RUN UP TO TEST THE SYSTEM AND WHEN THE LT ENG ECU SWITCH WAS SET TO A THE ENGINE SHUT OFF. THE LOW-PRESSURE FUEL PUMP ASSEMBLY WAS FAULTY AND REPLACED.

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