Torque Indications - Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual

SECTION 7 CESSNA
AIRPLANE AND SYSTEMS DESCRIPTION MODEL 208B 867 SHP
GARMIN G1000
ENGINE INDICATING SYSTEM (EIS)
(Continued)

TORQUE INDICATIONS

Torque (TRQ) indication is displayed at the top of both the ENGINE and
SYSTEM pages. The indicator is a round gage with a white pointer. The
transmitter senses the difference between the engine torque pressure
and the pressure in the engine case and transmits this data to the
G1000. Normal operating range is indicated by a green arc that
extends from 0 to redline. The Torque (TRQ) indicator incorporates a
dynamic redline varies with OAT and altitude.
DYNAMIC REDLINE
The dynamic redline is a graphical representation of takeoff power
below 16,000 feet MSL and Maximum Rated Power above 16,000 feet
MSL as depicted in Section 5, Performance, Figure 5-8, Maximum
Engine Torque For Takeoff chart and Figure 5-9 Maximum Engine
Torque For Climb. The dynamic redline automatically compensates for
altitude and temperature changes and adjusts displayed takeoff torque
for inertial separator deployment and bleed air heat switch position.
Failure to comply with the dynamic redline indication can result in
accelerated engine wear, unscheduled engine maintenance and
increased operating costs even though no other published engine
limitation has been exceeded.
STATIC REDLINE
The dynamic redline reverts to a static redline whenever the white
TORQUE GAGE annunciation is shown on the PFD. The white
TORQUE GAGE annunciation indicates when there is an ALT
MISCOMP message, red "X" through the OAT, Altitude, Airspeed and
Vertical Speed Indicators on PFD1 or a 5°C temperature difference
between OAT's on PFD1 and PFD2. With a white TORQUE GAGE
annunciation, the dynamic redline will become fixed at 2397 FT-LB
regardless of temperature or altitude changes. The cruise torque bug
will become inoperative and will not be shown on the EIS torque
indicator. Refer to Section 5, Performance, for the appropriate power
settings.
7-54 208BPHCUS-01
U.S.