# SDR 99ZZZX856

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N52PD](https://openairdocs.org/aircraft/N52PD), registered now
- Make and model: Enstrm F28F
- Aircraft serial: 807
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Gearbox
- Part number: 28131709R
- Condition: Making Metal
- Location: Main Rotor
- Part time: 1,901 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX856

## Discrepancy

2.5 HOURS AFTER OIL CHANGE, M/R GEARBOX HAD CHIP LIGHT.  LARGE FLAKES, BLACK OIL, SMELLED BURNT.  OIL LEVEL CORRECT.  OIL SAMPLE TAKEN.

---
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.