What was found
ROTOR RPM ANNUNCIATOR LIGHT CAME ON AND STAYED ON IN FLIGHT. ROTOR RPM WAS IN THE NORMAL RANGE. INSTALLED A NEW ROTOR RPM SENSOR SWITCH AND SYSTEM OPERATED NORMALLY. CAUSE OF FAILURE UNKNOWN.
- Difficulty date
- August 22, 2002
- Submitted
- September 10, 2002
- Operation
- Air carrier
- Aircraft
- N407LG
- Make and model
- Bell 407
- Aircraft serial
- 53143
- System (JASC)
- 6340 · Rotor Drive Indicating System
- Part
- Sensor
- Part number
- 407375021103
- Part serial
- 970028
- Condition
- Faulty
- Location
- Rotor Rpm
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.