What was found
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.
- Difficulty date
- May 24, 2010
- Submitted
- May 27, 2010
- Operation
- Air carrier
- Aircraft
- N861NC
- Make and model
- Urocop EC135T2
- Aircraft serial
- 0564
- Aircraft time
- 1,127 hours
- Engine
- Pwa PW206B
- System (JASC)
- 6320 · Main Rotor Gearbox
- 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
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.