Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов, Страница: 196 / 923

Page 8-9
Pilot’s Operating Manual
Revision A2: Nov, 2004
Sub-section 8
LANDING GEAR
Hawker 800XP Pro Line 21
Section III - SYSTEMS DESCRIPTION
MAIN GEAR (Figure 3)
Each main oleo-pneumatic leg retracts inwards into a wheel well in the wing. The well is covered with
the gear up by a fairing hinged to the wing, and linked to the gear. Additional fairing is provided by a
wheel well door, hydraulically-actuated to shut when the gear locks up.
When the gear is selected down, the door opens until the gear locks down, then closes to cover the well.
Each main gear is stabilized in the down position by a side stay located between the leg and the main
wing structure. The side stay also forms the main locking component in both the extended and retracted
positions.
WEIGHT-ON-WHEELS SWITCHES
Weight-On-Wheels (WOW) microswitch clusters are installed on the left and right gear. These switches
provide control function to various circuits when the airplane is airborne or on the ground.
NOSE GEAR (Figure 4)
The self-centering nose landing gear retracts forward, and is faired in the up and down positions by two
doors hinged to the nose structure and attached to the retracting mechanism. A small fairing attached
to the rear of the landing gear completes the closure of the bay when the gear is retracted.
The oleo-pneumatic leg is attached to a fitting on each side of the nose gear bay, and is stabilized in
the down position by a drag stay which also forms the main locking component in both the extended
and retracted positions. A spring strut maintains the drag strut in the locked position.
The nose gear leg incorporates an attachment for towing purposes. When this attachment is used, the
steering must be disconnected. A steering disconnect pin is located immediately under the towing pin
hole.
NOSE GEAR BAY DOORS (Figure 5)
The door operating mechanism incorporates a release strut which allows the doors to be opened on
the ground for access.
Access to the release strut when the doors are closed is via an aperture between the rear of the doors
and the gear leg. The strut assembly consists of a lower and upper strut. To latch the doors closed, the
upper strut telescopes into the lower and is retained by a hook engaging a pin. The hook is pivoted on
and off the pin by a lever which is retained in the closed position by a spring-loaded latch.
When the lever is open, or not latched closed, a microswitch illuminates the N GEAR red annunciator
to indicate the doors are either open or not correctly latched.
M6951_0
HA00C
017046AA.AI
N GEAR
N GEAR
R GEAR L GEAR
CENTER INSTRUMENT PANEL
INDICATION OF NOSE GEAR DOORS
OPEN OR UNLATCHED