# SDR JIKA2015061001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2015
- Submitted: June 12, 2015
- Operation: Air carrier
- Aircraft: [N1924T](https://openairdocs.org/aircraft/N1924T), registered now
- Make and model: Beech 99A
- Registry model: [Beech 99A](https://openairdocs.org/model/beech-99a) (OpenAirDocs)
- Aircraft serial: U115
- Aircraft time: 37,078 hours, 54,317 cycles
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Diode
- Part number: 1N0007
- Condition: Defective
- Location: Cockpit
- Part time: 37,078 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: J, B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/JIKA2015061001

## Discrepancy

AFTER TAKEOFF, PILOT NOTICED THE LT GEN ANNUNCIATOR ILLUMINATED, PILOT TRIED TO RESET GEN TWO TIMES WITH NO EFFECT.   DECIDED TO RETURN AFTER VECTORING BACK PILOT NOTICED A BURNING SMELL.  TURNED OFF THE LT GEN SWITCH & LANDED WITHOUT FURTHER INCIDENT.  TROUBLESHOOTING REVEAL DEFECTIVE DIODE PN 1N0007 ON LT OVER VOLTAGE RELAY & LT GEN CONTROL FUSE PN AGC15.  REPLACED DEFECTIVE PARTS & PERFORMED LT GEN OPERATIONAL CHECK.  ALL CHECKS WERE NORMAL.

---
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.