# SDR CA040123004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 2004
- Submitted: March 1, 2004
- Operation: General aviation
- Make and model: Pilats PC1245
- Aircraft time: 2,514 hours
- Engine: Pwa PT6A67B
- Propeller: Hartzl HCE4A3D
- System (JASC): [3197 · Instrument System Wiring](https://openairdocs.org/jasc/3197)
- Part: Insulation
- Condition: Chafed
- Location: Electrical Wire
- Stage of operation: AP
- How discovered: O
- Nature of condition: H
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA040123004

## Discrepancy

(CAN) DURING APPROACH FLIGHT ON MULTIPLE OCCASIONS THE PILOTS EHSI FAILED ON APPROACH , POWERED DOWN AND RE POWERED UNCOMMANDED.  ON EACH OCCASION THE SYSTEM TESTED NORMAL AFTER LANDING AND DID NOT REOCCUR FOR DAYS. EACH COMPONENT IN THIS SYSTEM WAS REPLACED WITH A SERVICEABLE UNIT WITH NO CHANGE. DURING INSP OF THE A/C WIRING CHAFED WIRING WAS DISCOVERED UNDER THE COPILOTS SEAT IN THE OUTFLOW VALVE COMPARTMENT.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.