PILOT’S OPERATING HANDBOOK
SECTION 7
DESCRIPTION
Edition 0 -- October 31, 2013
Rev. 1
Page 7.5.1
7.5 - LANDING GEAR
The TBM 900 is equipped with electro-hydraulically actuated, fully retractable tricycle landing gear.
Each landing gear is equipped with one wheel and an oil-air shock absorber integrated in the strut.
Main landing gears swivel on two ball joints installed on wing spars. Each landing gear retracts toward airplane
centerline. The operation is accomplished by a hydraulic actuating cylinder which also provides up and down
locking.
Nose gear swivels on two ball joints installed on a tubular steel mount frame. Its operation is accomplished by a
hydraulic actuating cylinder which also provides up and down locking. The nose wheel is steerable. It is connected
to pedals through a spring rod and is provided with a shimmy damper. In UP position, nose wheel is automatically
disconnected.
Actuating cylinders have a locking device integrated at both ends. This device maintains landing gear in up or
down position.
Landing gear doors, two on the nose gear, one on each main landing gear, are driven and kept in UP position by
the landing gear itself.
All doors are mechanically kept in down position.
HYDRAULIC PRESSURE
Hydraulic pressure required for landing gear operation is provided :
-
during normal operation, by an electro-hydraulic generator with integrated reservoir,
-
during emergency extension operation by a hand pump supplied with an auxiliary reservoir.
LANDING GEAR CONTROL
(Figure 7.5.1)
Landing gear control, located on ”LANDING GEAR” panel at the bottom of instrument panel left part, is
accomplished by an electric selector actuated through a lever ending with a knob representing a wheel. Operation
is carried out by pulling on lever and by putting it in the desired ”UP” (retracted) or ”DN” (extended) position. This
selector controls hydraulic generator.
LANDING GEAR POSITION INDICATOR
(Figure 7.5.1)
Landing gear position indication is accomplished by 5 lights :
-
On landing gear control panel
.
3 green indicator lights (one per landing gear),
.
1 red warning light ”GEAR UNSAFE”
.
1 amber light on the lever knob.
-
On MFD CAS window :
.
1 warning CAS message :
”GEAR UNSAFE”
NOTE
The amber light flashes while the hydraulic pump is operating to extend or retract the
landing gear.
When landing gear is correctly retracted, all lights are OFF.
Содержание TBM 900
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