What was found
CUSTOMER REPORTED DUAL TACHOMETER ROTOR NEEDLE DROPS INTERMITTENTLY AND READS INCORRECT ROTOR RPM.
- Difficulty date
- August 2, 2019
- Submitted
- August 15, 2019
- Operation
- General aviation
- Aircraft
- N211TB
- Make and model
- Robsin R44
- Aircraft serial
- 2106
- Aircraft time
- 2,218 hours
- Engine
- Lyc O540F1B5
- System (JASC)
- 6240 · Main Rotor Indicating System
- Part
- Tachometer
- Part number
- C7924
- Part serial
- 2233
- Condition
- Malfunctioned
- Location
- Dual
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.