# SDR N3XR2026090100001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2026
- Submitted: September 1, 2026
- Operation: General aviation
- Filed by: [Embry-Riddle Aeronautical University Inc, repair station N3XR816N](https://openairdocs.org/faa-repair-station/N3XR816N/embry-riddle-aeronautical-university-inc.md) (OpenAirDocs)
- Aircraft: [N813ER](https://openairdocs.org/aircraft/N813ER), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S12818
- Aircraft time: 3,417 hours
- System (JASC): [2434 · DC Generator-Alternator](https://openairdocs.org/jasc/2434)
- Part: Contactor
- Part number: X610029
- Condition: Burned
- Location: Alternator
- Part time: 3,417 hours
- Stage of operation: TX
- How discovered: O
- Nature of condition: H
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/N3XR2026090100001

## Discrepancy

BUSS E & M VOLTS AT 24.2 AFTER ENGINE START. NO CHANGE IN VOLTAGE AT ANY POWER SETTING. BATTERY AMPS DISCHARGE -7 AT ALL POWER SETTINGS.  R & R ALTERNATOR 24-VOLT CONTACTOR  R & R ACU WITH NEW.

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