Honda Aircraft Company
HA-420
SYSTEMS
POM
DESCRIPTION
HJ1-29000-005-001
October 30, 2016
1-78
During ground starting, the FADEC has the authority to abort a start if
ITT operating limitations are exceeded.
CAUTION
For all operating conditions other than ground starting,
the FADEC will not limit thrust, fuel flow or any other
control output to prevent ITT exceedance. It is the
responsibility of the pilot to reduce commanded thrust in
response to an exceedance.
Power setting
The FADEC software calculates the power management setting based on
the thrust lever position and flight/ambient conditions.
Engine thrust is modulated by moving the thrust lever to select either a
desired engine thrust rating or an intermediate thrust level. The thrust
management settings incorporate detents which associate particular
ranges of Thrust Lever Angle (TLA) setting with a particular engine
thrust rating. The engine thrust ratings are:
•
Idle (IDLE)
•
Max Continuous Thrust (MCT)
•
Takeoff (TO)
TO and IDLE are full forward and full aft respectively while MCT is a
soft detent just aft of full forward position.
The Thrust Levers incorporate a gated stop at IDLE. Shutting down the
engine is accomplished by selecting CUTOFF. This requires the guard
on the back of the thrust lever to be lifted to move the lever past the
IDLE stop into CUTOFF.
FOR TRAINING PURPOSES ONLY
