Presentation on theme: "Meridian – PA46-500TP Landing Gear"— Presentation transcript:
1 Meridian – PA46-500TP Landing Gear Wright Aviation Services LLCPresentsPiper MeridianSystems Training ProgramLanding Gear
2 Meridian – PA46-500TP Landing Gear & Brakes BrakingTricycle gearRetractableElectrically activatedHydraulically actuatedWarning systemsThrottle positionFlap positionSquat switchAnnunciator panelGear Position LightsBrake SystemDisc TypeManually activatedHydraulically actuatedReverse ThrustPilot operatedGround use onlyMLG squat switch
3 Meridian – PA46-500TP Landing Gear Tricycle gearRetractableElectrically activatedHydraulically actuatedWarning systemsThrottle positionFlap positionSquat switchAnnunciator panelGear Position Lights
4 Meridian – PA46-500TP Landing Gear Main Landing Gear(MLG)ActuatorRod EndTrunnionPistonTorque LinkYokeBrake AssemblyBrake LineWheel Well DoorDoor RodSquat Switch – Left MLG
5 Meridian – PA46-500TP Landing Gear Nose Landing Gear(NLG)Extends forwardRetracts aftNLG Steering via Rudder PedalsTurn limits for towingNLG Pressure 70 psiNLG Rake 90 degreesLanding Light
6 Meridian – PA46-500TP Landing Gear Nose Landing Gear(NLG)ActuatorTrunnionTorque LinkPistonYokeSteering AssemblySteering ArmSteering Bungee AssemblySteering BellcrankSteering rodsSteering Assy BellowsTurn limits for towing
7 Meridian – PA46-500TP Landing Gear Gear Indications3 GreenEach gear down and lockedAnnunciator LightGear in transitNot down, lockedNot up, stowedGoes out when:All 3 gearUp and stowedDown and lockedWarning SystemPower selectionFlap configurationGear position
8 Meridian – PA46-500TP Landing Gear Warning SystemHorn – cockpit, not headsetCaution Light on PanelMaster Caution on PanelThe 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 torqueFlap selection greater than 10 degrees (first notch)
9 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 over-center 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.
14 Meridian – PA46-500TP Landing Gear Landing Gear Operation:Retraction: 129 KIASExtension: 168 KIASEmergency Extension:Slow to 100 KIASPull Hydraulic Pump CBSelect Gear DownPull Emergency Extension Knob OUT
15 Meridian – PA46-500TP Landing Gear Summary & Review Tricycle Landing gearElectrically Activated, Hydraulically Actuated up and downWarning system consist of:Three independent down & locked lightsIn transit annunciator light on unless all 3 gear either up stowed or down & lockedPositive nose gear steering through rudder pedalsLand on mains, hold NLG off and center pedals before NLG touch down.Loss of hydraulic pressure, gear will “free fall” into positionSlow to 100 KIAS to reduce airflow over gear during emergency extensionNLG extends forward while mains extend outward from center lineTire pressure and NLG “rake” critical to ground handlingMains 50 psiNose 70 psi
16 Meridian – PA46-500TP Landing Gear Presented byWright Aviation Services LLCScottsdale/Phoenix AZCopyright 2010/2011 – Wright Aviation ServicesAll rights reservedWebsite:Phone:Meridian Landing Gear PresentationBy Wright AviationTHE END
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