Service difficulty report · Dual Tachometer · Robsin R44

Difficulty date
June 29, 2021
Submitted
July 7, 2021
Operation
General aviation
Aircraft
N46SG
Make and model
Robsin R44
Aircraft serial
1413
Aircraft time
4,442 hours
Engine
Lyc O540F1B5
Part
Dual Tachometer
Part number
C7924
Part serial
5584
Condition
Defective
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
K

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

What was found

CUSTOMER REPORTED DUAL TACHOMETER P/N: C792-4 ROTOR NEEDLE WAS INTERMITTENT, AND THEN FAIL COMPLETELY.