# SDR QMLA2015101315096

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2015
- Submitted: October 13, 2015
- Operation: Air carrier
- Aircraft: [N163BF](https://openairdocs.org/aircraft/N163BF), registered now
- Make and model: Urocop EC 135 P2
- Registry model: [Urocop EC 135 P2](https://openairdocs.org/model/eurocopter-deutschland-ec-135-p2) (OpenAirDocs)
- Aircraft serial: 0671
- Aircraft time: 3,414 hours, 14,687 cycles
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Pinion
- Part number: 4649302041
- Part serial: 2222
- Condition: Damaged
- Location: Transmission
- Part time: 3,414 hours, 14,687 cycles
- Component: Transmission
- Component part number: 4649010010
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2015101315096

## Discrepancy

MAIN TRANSMISSION HAD STAGE 2 HIGH IRON INDICATION FROM OIL SAMPLE, REQUIRING INPUT DRIVE STAGE TOOTHING INSPECTION IAW ASB EC135-63A-012 WITHIN 25 FH.  INSPECTION REVEALED PITTING IN BOTH INPUT PINIONS & BEVEL GEAR OF MAIN TRANSMISSION REQUIRING REPLACEMENT OF TRANSMISSION.  THIS ACFT IS CURRENTLY OUT OF SERVICE AWAITING THIS REPLACEMENT TRANSMISSION.

---
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.