N557SM

ROBINSON HELICOPTER COMPANY R44 II · 2007 · Valid Registration

Registered owner: ACMEFLIGHT LLC, CA (owner ≠ operator)

Operators of this aircraft

Who operated this tail, and how firmly we know it.

Operator	Role	Period	Basis
HELICO SONOMA INC. (1N7A)	Certificate holder	—	Matched by certificate designator

No NTSB accidents or incidents on file for this aircraft.

O · 2019-08-22 Matched by certificate designator

ATA 6240

CUSTOMER REPORTED DUAL TACHOMETER FAILED DURING FIRST TRACK AND BALANCE FLIGHT.