# SDR QMLA2015050715036

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2015
- Submitted: May 8, 2015
- Operation: Air carrier
- Aircraft: [N912EF](https://openairdocs.org/aircraft/N912EF), registered now
- Make and model: Urocop EC135T2
- Registry model: [Urocop EC135T2](https://openairdocs.org/model/eurocopter-deutschland-ec135t2) (OpenAirDocs)
- Aircraft serial: 421
- Aircraft time: 3,943 hours, 14,137 cycles
- Engine: Tmeca ARRIUS2B2
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Chip Detector
- Condition: Contaminated
- Location: Main Gearbox
- Stage of operation: AA
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2015050715036

## Discrepancy

DURING CRUISE FLIGHT, THE PILOT WAS ALERTED TO A MAIN TRANSMISSION CHIP LIGHT.  HE IMMEDIATELY DIVERTED BACK TO THE BASE OF OPERATIONS APPROX 3NM AWAY WITH NO ISSUES.  INSPECTED THE CHIP DETECTORS.  A CLASS C CHIP WAS FOUND.  THE DETECTOR WAS CLEANED, SYS OIL WAS DRAINED, FILTER CHANGED & SYS OIL SERVICED.  A FIFTEEN MINUTE PENALTY RUN COMPLETED THE MAINTENANCE ACTION FOR THIS EVENT WITH NO DEFECTS NOTED.

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