INTRODUCTION
This chapter describes the Honeywell Primus 1000 avionics system installed in the
Learjet 45. Dual independent flight directors are integrated with a fail passive autopi-
lot and yaw damper. The flight instruments, engine instruments, systems status, navi-
gation, TCAS, RADAR, and electronic checklist (when available) are all displayed on
four display units. A digital audio control system and dual radio management units
(RMU) support the communication and navigation functions. A dual sensor package is
installed which includes attitude heading reference systems (AHRS), air data systems
(ADS), VHF Nav/Comm radios and DMEs. A single ADF is provided and a second may
be installed as an option. The standard weather radar installation is the Honeywell
Primus 660 with the Primus 880 weather radar available as an option. Single or dual flight
management systems (FMS), a traffic collision avoidance system (TCAS) and ground
proximity warning system (GPWS) are offered as options. A number of other options
such as flight phones, flight data recorder, SELCAL, HF radio, GPWS, AFIS, EGPWS/WS,
TAWS, etc. are also available, but are not covered in this manual.
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
CHAPTER 16
AVIONICS
16-1
FOR TRAINING PURPOSES ONLY
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