# SDR 2011FA0000420

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 26, 2011
- Submitted: June 26, 2011
- Operation: General aviation
- Aircraft: [N907SE](https://openairdocs.org/aircraft/N907SE), registered now
- Make and model: Cirrus SR22
- Registry model: [Cirrus SR22](https://openairdocs.org/model/cirrus-design-sr22) (OpenAirDocs)
- Aircraft serial: 2121
- Aircraft time: 544 hours
- System (JASC): [2430 · DC Generating System](https://openairdocs.org/jasc/2430)
- Part: Wire
- Condition: Arced
- Location: Electrical
- Stage of operation: CR
- How discovered: O
- Nature of condition: B, H, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2011FA0000420

## Discrepancy

ALT1 FIELD WIRE T120 NOT SECURED PROPERLY RESULTING IN CHAFING THEN ARCING TO CYLINDER NR 5 INTAKE STUD CAUSING ALT1 AND ALT1 FIELD CONTROL MODULE FAILURE AND ALT1 FAILURE INDICATION. THE AIRCRAFT HAS APPROX 40 HRS SINCE ANNUAL INSP. THE FAILURE RESULTED IN AN UNSCHEDULED/UNEVENTFUL LANDING. REPAIRS INCLUDED WIRING REPAIR, ALT1 REPLACEMENT, AND ALT1 FIELD CONTROL MODULE REPLACEMENT. THE CIRRUS AIRPLANE MAINT MANUAL CHAPT 24-30 PG 13 DOES NOT ADDRESS SECURING THE WIRING WHICH RUNS IN CLOSE PROXIMITY TO THE #5 CYLINDER STUD AND CAN CHAFFE CAUSING ARCING AND FAILURE..

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