INTRODUCTION
The retractable landing gear is electrically controlled and hydraulically actuated. Each
main gear has dual wheels equipped with individual brakes and retracts inboard. The
self-centering nose gear has a single wheel, incorporates a digitally controlled electric
steering system, and retracts forward. Alternate gear extension is via a mechanically ac-
tuated free-fall system, but can also be lowered with the auxiliary hydraulic system. The
airplane brakes incorporate a digitally controlled brake-by-wire system, with anti-skid
protection. Emergency and parking braking capability is provided by an auxiliary hy-
draulic pump and a hydraulically charged brake accumulator.
T h e L e a r j e t 4 5 t r i cy c l e l a n d i n g g e a r i s
equipped with three air-hydraulic type shock
struts. The nose gear doors and the outboard
main gear doors are mechanically linked to the
gear and move with them. The inboard main
gear doors are hydraulically operated and se-
quenced closed when the gear is fully ex-
tended or retracted. The inboard gear doors are
secured in the retracted position with hy-
draulically actuated up-lock hooks. Gear ac-
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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 14
LANDING GEAR AND BRAKES
14-1
FOR TRAINING PURPOSES ONLY
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
FlightSafety
international
FlightSafety
international
GENERAL