Garmin G1000 King Air C90GT - Manual (Page 105)

190-00663-01 Rev. A Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT
ENGINE INDICATION SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
91
ENGINE INDICATION SYSTEM
TACHOMETER (RPM)
The Tachometer is located beneath the Torque gauge and displays the propeller speed in revolutions per
minute (RPM) from 0 to 2500. A propeller overspeed is indicated if the propeller speed exceeds the maximum
safe operating speed (red tick mark). The Tachometer is equipped with a propeller sync indicator, which points
towards the higher-speed propeller. The indicator changes linearly with RPM difference between the left and
right propellers. A full diamond is displayed when the propellers are synchronized and transitions to a full
arrowhead when the difference is greater or equal to 50 rpm.
Figure 3-5 Tachometer with Propellers Synchronized
Figure 3-6 Tachometer with Propellers Out of Sync (less than 50 rpm)
Figure 3-7 Tachometer with Propellers Out of Sync
(greater than or equal to 50 rpm)