# SDR CA150713022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 10, 2015
- Submitted: April 22, 2016
- Operation: General aviation
- Make and model: Pilats PC1247E
- Aircraft time: 5,487 hours
- Engine: Pwa PT6A67D
- Propeller: Hartzl HCE4A3D
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Part number: 23085024
- Condition: Failed
- Location: Nr 1
- Stage of operation: CR
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA150713022

## Discrepancy

(CAN) PILOT REPORT CAS MSG APPEARED, GEN 1 OFF, WHILE IN CRUISE.  UNSUCCESSFUL RESET ATTEMPT, 25 MINUTES LATER COULD HEAR A FAINT GROWL & FEEL A SLIGHT VIBRATION.  SCHEDULED LANDING PERFORMED.  NR 1 GEN WAS REMOVED, AFT BALL BEARING HAD FAILED, COOLING FAN WAS WORN & DETACHED FROM SHAFT.  PIECES OF BEARING CAGE WERE FOUND UPON REMOVING BRUSH COVER.  APPLICABLE INSPECTIONS PERFORMED, GEN REPLACED WITH OVER HAULED UNIT.

---
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.