Transcript Meridian – PA46-500TP Landing Gear Wright Aviation Services LLC Presents Piper Meridian Systems Training Program Landing Gear.

Meridian – PA46-500TP
Landing Gear
Wright Aviation Services LLC
Presents
Piper Meridian
Systems Training Program
Landing Gear
Meridian – PA46-500TP
Landing Gear & Brakes





Landing Gear
Tricycle gear
Retractable
Electrically activated
Hydraulically actuated
Warning systems





Throttle position
Flap position
Squat switch
Annunciator panel
Gear Position Lights
Braking
 Brake System
 Disc Type
 Manually activated
 Hydraulically actuated
 Reverse Thrust
 Pilot operated
 Ground use only
 MLG squat switch
Meridian – PA46-500TP
Landing Gear
•
•
•
•
Tricycle gear
Retractable
Electrically activated
Hydraulically
actuated
• Warning systems
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–
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–
–
Throttle position
Flap position
Squat switch
Annunciator panel
Gear Position Lights
Meridian – PA46-500TP
Landing Gear
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•
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•
Main Landing Gear
(MLG)
Actuator
Rod End
Trunnion
Piston
Torque Link
Yoke
Brake Assembly
Brake Line
Wheel Well Door
Door Rod
Squat Switch – Left MLG
Meridian – PA46-500TP
Landing Gear
•
•
•
•
•
•
•
Nose Landing Gear
(NLG)
Extends forward
Retracts aft
NLG Steering via
Rudder Pedals
Turn limits for towing
NLG Pressure 70 psi
NLG Rake 90 degrees
Landing Light
Meridian – PA46-500TP
Landing Gear
•
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Nose Landing Gear
(NLG)
Actuator
Trunnion
Torque Link
Piston
Yoke
Steering Assembly
Steering Arm
Steering Bungee
Assembly
Steering Bellcrank
Steering rods
Steering Assy
Bellows
Turn limits for
towing
Meridian – PA46-500TP
Landing Gear
Gear Indications
• 3 Green
– Each gear down and locked
• Annunciator Light
– Gear in transit
• Not down, locked
• Not up, stowed
– Goes out when:
• All 3 gear
– Up and stowed
– Down and locked
• Warning System
– Power selection
– Flap configuration
– Gear position
Meridian – PA46-500TP
Landing Gear
Warning System
• Horn – cockpit, not headset
• Caution Light on Panel
• Master Caution on Panel
The warning system will
activate whenever power
and/or flap are set to a
“landing” configuration but
the gear is not down and
locked.
– Power reduction below approx
250 lbs torque
– Flap selection greater than 10
degrees (first notch)
Meridian – PA46-500TP
Landing Gear
 The landing gear system is electrically activated, hydraulically actuated.
 Gear is held up by hydraulic pressure and down by spring loaded overcenter locks within the actuators.
 Hydraulic actuators move the gear up and down.
 Once down and locked, hydraulic pressure is required to move the
down-locks within the actuators, enabling the gear to be retracted.
 When retracted, hydraulic pressure keeps the gear in the retracted
position. The absent hydraulic pressure, gear will extend through
gravity.
Meridian
Landing
Gear
Extend
Meridian – PA46-500TP
Landing Gear Extend
Meridian
Landing
Gear
Retract
Meridian – PA46-500TP
Landing Gear Retract
Meridian – PA46-500TP
Landing Gear
Landing Gear Operation:
Retraction: 129 KIAS
Extension: 168 KIAS
Emergency Extension:
Slow to 100 KIAS
Pull Hydraulic Pump CB
Select Gear Down
Pull Emergency Extension Knob OUT
Meridian – PA46-500TP
Landing Gear
Summary & Review
 Tricycle Landing gear
 Electrically Activated, Hydraulically Actuated up and down
 Warning system consist of:
 Three independent down & locked lights
 In transit annunciator light on unless all 3 gear either up stowed or down & locked
 Positive nose gear steering through rudder pedals
 Land on mains, hold NLG off and center pedals before NLG touch down.
 Loss of hydraulic pressure, gear will “free fall” into position
 Slow to 100 KIAS to reduce airflow over gear during emergency extension
 NLG extends forward while mains extend outward from center line
 Tire pressure and NLG “rake” critical to ground handling
 Mains 50 psi
 Nose 70 psi
Meridian – PA46-500TP
Landing Gear
Presented
by Gear
Meridian
Landing
Wright
Aviation Services LLC
Presentation
Scottsdale/Phoenix
AZ
By
Wright Aviation
Copyright 2010/2011 – Wright Aviation Services
All rights reserved
Website: www.wrightaviation.net
Email: [email protected]
www.WrightAviation.net
Phone: 480-203-0599
THE END
480-203-0599