What was found
CUSTOMER REPORTED DUAL TACHOMETER FAILED DURING FIRST TRACK AND BALANCE FLIGHT.
- Difficulty date
- August 22, 2019
- Submitted
- August 29, 2019
- Operation
- General aviation
- Aircraft
- N557SM
- Make and model
- Robsin R44RAVENII
- Aircraft serial
- 11700
- Engine
- Lyc IO540AE1A5
- System (JASC)
- 6240 · Main Rotor Indicating System
- Part
- Tachometer
- Part number
- C7924
- Part serial
- 3273
- Condition
- Failed
- Location
- Dual
- Stage of operation
- CR
- 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.