INTRODUCTION
The Learjet 20 series avionics consists of, but is not limited to, the air data system, the
automatic flight control system, the navigation system, and the communication system.
This chapter includes information on the air data, automatic flight control, and flight
director systems used in the Learjet 20. The user should consult applicable supplements
in the approved AFM and vendor manuals for additional information and information
on specific systems not included in this chapter.
GENERAL
The air data system consists of the pitot-static
system, the air data sensor (if installed) or au-
topilot altitude controller, and the RAM AIR
TEMP gage.
The automatic flight control system includes
the autopilot and yaw damper. The standard
automatic flight control system installed on
the Learjet 20 series is the Jet Electronics
and Technology, Inc., (JET) FC 110. The yaw
damper system operates independently of the
autopilot and may be engaged with or with-
out the autopilot engaged. The yaw damper
system is described in Chapter 15, “Flight
Controls.”
CHAPTER 16
AVIONICS
16-1
FOR TRAINING PURPOSES ONLY
LEARJET 20 SERIES PILOT TRAINING MANUAL
FlightSafety
international