What was found
NR (ROTOR RPM) MAGNETIC SENSING PICKUP LOOP BROKEN CAUSING INTERMITTENT NR INDICATION FLUCTUATIONS DURING FLIGHT. PROBABLE CAUSE IS THAT WIRE AND FRAGILE COIL WIRE IS HAIR THIN. SUGGEST A STRONGER WIRE HARNESS BE USED. (K)
- Difficulty date
- September 19, 2007
- Submitted
- August 5, 2008
- Operation
- Air carrier
- Aircraft
- N810MH
- Make and model
- Urocop EC130B4
- Aircraft serial
- 3949
- Engine
- Tmeca ARRIEL2B1
- System (JASC)
- 6297 · Main Rotor System Wiring
- Part
- Wire
- Condition
- Broken
- Location
- Tach Sensor
- Part time
- 2,837 hours
- Component
- Sensor
- Component part number
- 50071550020
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.