Landing Gear Warning Horn; Nose Wheel Steering; Brakes - Eclipse 500 System Manual

Section 4. Landing Gear and Brakes
emergency gear release handle that mechanically releases the actuator brakes,
allowing the gear to freefall.
The actuator brakes are capable of supporting the gear in the retracted position
without sagging with g-loads up to 2.0 g. The gear may sag at loads above 2.0 g, but
automatically retract when the g-load is reduced. When the actuator sag tolerance is
exceeded, the ACS applies power to the actuator motors, unlocking the brakes. The
motors drive in the retract direction until the gear is re-stowed, at which point the
actuator brakes are re-engaged.
NOTE:
When this occurs, the pilot can expect to see a gear unsafe indication for the
gear or gears that are being re-stowed.

4.5.5 Landing Gear Warning Horn

The landing gear warning horn sounds under 12,500 feet MSL, if any gear is not
Down and Locked under three conditions:
1. Flaps extended beyond T/O setting
2. Airspeed less than 120 knots with one or both throttles below mid-range (30
degrees TLA)
3. Airspeed less than 140 knots with one or both throttles below mid-range (30
degrees TLA
NOTE:
The warning horn is NOT silenceable for conditions 1 and 2.
The warning can be silenced for condition 3 with the GEAR MUTE button on
either sidestick.

4.5.6 Nose Wheel Steering

Nose wheel steering operates through mechanical linkage. With weight on the nose
gear, a steering lever at the top of the nose gear engages a mating lever attached to
the rudder pedals. When the gear is retracted and weight is off the nose wheel, the
steering lever disengages, and the gear self-centers with a pair of internal cams. The
cams will not reengage until weight is back on the nose wheel; this prevents landing
with the nose wheel turned.
The rudder pedals provide +/- 15 degrees of steering angle. Turns beyond 15
degrees are accomplished with differential braking. When the steering angle
exceeds 15 degrees, the steering cams disengage and allow free castering up to 360
degrees. The cams also disengage to allow 360 degrees of turning when the
airplane is towed. When the nose wheel returns within the +/- 15 degree angle, the
cams reengage, returning steering control to the rudder pedals.
NOTE:
Should the nosewheel caster beyond 60 degrees left or right, it may be
necessary to have ground crew reduce the angle of the nosewheel to allow it to
reengage to the 15 degree steering band

4.5.7 Brakes

The braking system is mechanically actuated and hydraulically operated. Braking is
provided by hydraulically operated single disc brakes on each main gear. When
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Copyright © — Eclipse Aviation Corporation
Eclipse 5OO Systems Manual
Version 2.0 April 2007