# SDR 97ZZZX1469

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 27, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N83154](https://openairdocs.org/aircraft/N83154), registered now
- Make and model: Robsin R22BETA
- Aircraft serial: 2470
- System (JASC): [2430 · DC Generating System](https://openairdocs.org/jasc/2430)
- Part: Diode
- Part number: A1SA
- Condition: Shorted
- Location: Battery Solenoid
- Stage of operation: CL
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX1469

## Discrepancy

TEN MINUTES AFTER DEPARTURE FROM PHOG CFI, NOTICED SMOKE COMING FROM CONSOLE.  MASTER WAS SWITCHED OFF BUT AFTER A PRECAUTIONARY LANDING IN FIELD, MECHANIC FOUND OVER 20 WIRES WITH MELTED INSULATION FROM VARIOUS LOCATIONS FROM THE UPPER CONSOLE THROUGH-WIRE LOOM TO ELECT COMPONENTS.  SEVERAL COMPONENTS WERE SHORTED AND DAMAGED.  APPARENTLY A DIODE ON BATTERY SOLENOID SHORTED CAUSING HIGH CURRENT FLOW THROUGH MASTER SWITCH WIRE WHICH HEATED HARNESS BUNDLE AND OTHER COMPONENTS.  SUBMITTER RECOMMENDED INSTALLING CIRCUIT PROTECTION TO MASTER SWITCH.

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