Honda HondaJet HA-420 Pilots Operating Manual page 225

Honda Aircraft Company
HA-420 SYSTEMS
POM DESCRIPTION
Communication Systems
VHF Communication
Dual digital-tuning VHF Com radios are provided. Tuning, selection of
active radio and volume/squelch control is made using the CDU touch-
screen or control knobs. If availability of both CDUs should be lost,
both radios are automatically tuned to 121.500 MHz.
Two push-to-talk (PTT) switches are provided for each crew member,
one on the yoke and one on the glareshield.
In addition to the headset and oxygen mask microphones, an always
active, hand-held microphone is mounted on each control column. The
hand-held microphone input is separate from the headset/oxygen mask
input.
If a microphone is activated for more than 35 seconds, that input will be
disabled and a "stuck mic" alert posted.
Intercom
A Pilot/Copilot intercom enables the crew to communicate with each
other. The intercom function can be selected off through the CDU
Intercom page where individual volume and squelch adjustments are also
available.
Cockpit Speakers
The cockpit speakers can be selected on/off and volume adjusted using
the on-side CDU Audio & Radios page.
HJ1-29000-005-001
October 30, 2016 1-209
FOR TRAINING PURPOSES ONLY