Service difficulty report · Dual Tachometer · Robsin R22BETAII

Difficulty date
January 13, 2021
Submitted
January 20, 2021
Operation
General aviation
Aircraft
N860VA
Make and model
Robsin R22BETAII
Aircraft serial
3089
Aircraft time
8,756 hours
Engine
Lyc O360J2A
Part
Dual Tachometer
Part number
A7924
Part serial
3567
Condition
Defective
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: A792-4 SHOWS 90% ROTOR RPM INTERMITTENTLY WITH ENGINE RPM AT 100%.