Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов

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Page 8-13
Pilot’s Operating Manual
Revision A2: Nov, 2004
Sub-section 8
LANDING GEAR
Hawker 800XP Pro Line 21
Section III - SYSTEMS DESCRIPTION
AUXILIARY HYDRAULIC SYSTEM (Figure 6)
The auxiliary hydraulic system is selected by pulling the AUX HYD SYSTEM handle. This action dumps
any pressure in the normal landing gear system lines to the reservoir and isolates the auxiliary system
from the main system return line.
It is not necessary to select the gear down in order to lower it. Operating the auxiliary system hand pump
directs hydraulic fluid to the gear actuators via lines independent of the normal extension circuit.
LOWERING SEQUENCE
• The nose gear uplock is released, the nose bay doors open and the gear extends.
• The main gear uplocks are released, the wheel well doors are unlocked and the main gear extends
pushing the doors open.
• As the nose gear locks down, the mechanical linkage closes the nose bay doors.
• When the main gear has locked down, the wheel well doors are left open.
Although it is not necessary to select the gear down when using the auxiliary system, it is recommended
to do so after the gear has locked down, to avoid the possibility of a subsequent retraction of the gear
when the airplane is on the ground. Selecting the gear down will also cancel the gear red annunciations.
The annunciations presented below are illuminated when the gear has been lowered via the auxiliary
system, but the selector lever has not been moved to the down position.
M6951_0
HA00C
017046AA.AI
N GEAR
N GEAR
R GEAR L GEAR
CENTER INSTRUMENT PANEL
INDICATION OF NOSE GEAR DOORS
OPEN OR UNLATCHED