# SDR DXTA200601224

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2006
- Submitted: February 8, 2006
- Operation: Air carrier
- Aircraft: [N255QS](https://openairdocs.org/aircraft/N255QS), registered now
- Make and model: Amd FALCON2000
- Aircraft serial: 155
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Starter Gen
- Part number: 8060150
- Part serial: 1563
- Condition: Seized
- Location: Apu
- Part time: 767 hours, 668 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200601224

## Discrepancy

WHILE SITTING ON THE RAMP WITH APU RUNNING.  THE CABIN LIGHTS FLICKERED AND AN ELECTRICAL BURNING SMELL WAS PRESENT.  SHUT DOWN APU.  TOOK ALL PWR OFF.  THERE WERE NO CB'S POPPED.  THE SMELL WAS ONLY PRESENT IN THE CABIN.  APU WILL NOT START.  GAINED ACCESS TO APU STARTER GENERATOR AND NOTICED A HEAVY ELECTRICAL SMELL.  REMOVED THE APU STARTER GENERATOR AND FOUND THE APU STARTER GENERATOR SEIZED AND THE APU SPLINE WAS SHEARED.  REMOVED THE APU GEN SPLINE FROM THE APU ACCESSORY CASE SPLINE FOUND ALL SPLINES KNIFE EDGED.

---
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.