Honda HondaJet HA-420 Pilots Operating Manual page 93

Honda Aircraft Company
HA-420 SYSTEMS
POM DESCRIPTION
control system may limit fuel flow rate to prevent the engine from
exceeding starting ITT temperature limits.
Engine Start
On the ground with the thrust levers in CUTOFF, engine start is initiated
by pushing the engine start switch and then moving the thrust lever to
IDLE. The starting sequence is automatically controlled by the FADEC
which initiates fuel flow and ignition in response to engine core speed.
After a light-off occurs, the system controls the FPMU fuel metering
valve to accelerate the engine to the power setting calculated from the
inputs.
In flight starts are performed as starter assisted or wind-milling according
to which portion of the air start envelope is appropriate.
Starter assisted airstarts are performed in a similar manner to ground
starts by pushing the engine start switch and moving the thrust lever to
IDLE.
Wind-milling airstarts are performed by moving thrust lever to IDLE
after establishing a minimum of 8% N .
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HJ1-29000-005-001
October 30, 2016 1-77
FOR TRAINING PURPOSES ONLY