# SDR QMLA2010052410019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2010
- Submitted: May 27, 2010
- Operation: Air carrier
- Aircraft: [N861NC](https://openairdocs.org/aircraft/N861NC), registered now
- Make and model: Urocop EC135T2
- Registry model: [Urocop EC135T2](https://openairdocs.org/model/eurocopter-deutschland-ec135t2) (OpenAirDocs)
- Aircraft serial: 0564
- Aircraft time: 1,127 hours
- Engine: Pwa PW206B
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Nut
- Part number: 4649205004
- Condition: Undertorqued
- Location: M/R Mast
- Part time: 1,127 hours
- Component: Mast Assy
- Component part number: L623M1006103
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2010052410019

## Discrepancy

MAIN ROTOR MAST NUT TORQUE FAILED TORQUE CHECK ON 400HR INSP. MAST NUT BACKED OFF BY HAND. IT TOOK 8 CYCLES FOR MAST NUT TO PASS TORQUE CHECK.

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