# SDR CA020227007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 24, 2002
- Submitted: April 15, 2002
- Operation: General aviation
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft time: 8,378 hours
- Engine: Pwa PT6A67D
- Propeller: Hartzl HCE4A3I
- System (JASC): [6197 · Propeller/Propulsor System Wiring](https://openairdocs.org/jasc/6197)
- Part: Wire
- Part number: 1293640919
- Condition: Shorted
- Location: Autofeather Sys
- Stage of operation: AP
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA020227007

## Discrepancy

(CAN) DURING CRUISE FLT,  CREW NOTICED FAINT SMOKE SMELL, & NOTICED THAT PROP AUTOFEATHER CIRCUIT BREAKER HAD POPPED. THEY DECIDED TO RETURN TO YYC. DURING APPROACH / LDG PHASE OF FLT, SMELL OF SMOKE BECAME MORE NOTICEABLE. THE LDG & TAXIING TO GATE WENT UNEVENTFULLY. DURING MAINT INVEST. SEVERAL WIRES ON BACK OF AUTOFEATHER OFF/ON/ TEST SWITCH WERE SHORTED / MELTED.  FURTHER INVEST. REVEALED SHORTED / MELTED WIRES ON POWER LEVER MICROSWITCHES FOR AUTOFEATHER,  TRACING SYS FURTHER IT NOTICED THAT A123 PRINTED CCT BOARD P/N 129-364091-9 HAD BURNT TRACKS & DAMAGED COMPONENTS ON IT. ALL COMPONENTS&WIRING WILL BE TESTED/REPL, FOLL OWED BY EXTENSIVE GROUND CHECK OF ENTIRE AU

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