This is a typical H300 CBi instrument panel.
Move the mouse over the panel for a description of the instruments.
Click on an item on the panel for a more detailed explanation.
Air Speed IndicatorDisplays Airspeed in knots (this one is also calibrated in MPH). Measures difference between pitot pressure and static pressure and displays the difference as airspeed.
Attitude Indicator or Artificial HorizonGyroscopic instrument which indicates rates of pitch and roll. When correctly aligned by the pilot indicates steady state pitch and roll with respect to the horizon.
AltimeterIndicates height above a pilot set datum, if this datum is set to Sea Level then altitude is displayed. Works by sensing static air pressure and displaying the difference between that and the datum as an altitude in feet (some are calibrated in meters).
Low Volts Warning LightIlluminates when the bus voltage is less than a predetermined value.
Usually indicates charging system failure, although may not illuminate immediately if the battery is very strong.
Fuel Low Caution LightIndicates 1 Gallon remaining.
Tail Rotor Chip LightIlluminates is metal particles are found in the tail rotor gearbox.
Low Rotor RPM Warning LightIlluminates if the rotor RPM falls below a manufacturer determined Limit.
In the case of the 269CBi it flashes below 440RRPM and illuminates continuously below 390 RRPM.
Starter Warning LightIlluminates while a voltage is applied to the starter motor. Should be on while the starter button is depressed, off at all other times.
Low Rotor RPM Horn Test / Mute ButtonOn the ground can be used to test the low rotor RPM horn.
In flight can be used to silence the horn when it sounds.
GPS Nav CommThree things in one box for this one.
Clutch Engage / Disengage SwitchThis switch controls the clutch, which is used to disengage the rotor system in order to facilitate engine startup and shutdown without a load on the engine.
Engine Oil Temperature GaugeInidcates the temperature of the oil in °C.
An excessively high or low temperature may be an indication of impending failure.
Fuel Pressure GaugeThis aircraft has a fuel injection system and as such requires the fuel to be fed to the servo injector unit under pressure.
The gauge is calibrated in Pounds per Square Inch (PSI).
Turn And Slip IndicatorReally two instruments in one.
The Slip indicator is the little black ball. It indicates whether the aircraft is in balance (at cruise airspeeds).
The Turn indicator is the aeroplane, when the wings of the aeroplane are aligned with the diagonal white lines this indicates the the helicopter is performing a rate one turn (3° per second).
Manifold Air PressureThis gauge indicates air pressure in the inlet manifold. It is used as an approximate indication for engine power. Calibrated in inches of mercury, which is one of many ways to describe a pressure.
Engine Oil PressureDisplays the oil pressure inside the engine in PSI.
Direction IndicatorGyroscopic instrument which when sychronised with the Compass indicates heading.
Fuel Quantity GaugeDisplays the fuel quantity remaining in the fuel tank(s). This one is calibrated in US Gallons.
Combined Engine And Rotor RPM GaugeReally two gauges in one.
The long needle measures Engine RPM (ERPM) along the outer scale.
The short needle marked with an R measures Rotor RPM (RRPM)on the inner scale.
Both scales are calibrated in Revolutions Per Minute.
VOR/ILS IndicatorThis instrument indicates radial postion from a ground based beacon.
It also has a glidelope indicator which is be used when flying an ILS.
AmmeterMeasure current flow into or out of the battery. It is calibrated in AMPs.
Cylinder Head TemperatureInidcates the temperature of the cylinder head in °C.
An excessive temperature may be an indication of impending failure.
Circuit BreakersCircuit Breakers can be thought of as resettable fuses.
They can be reset once only, if popped in flight.
Mixture ControlControls fuel:air mixture. Fully in is rich, fully out is lean (cut off).
Trim SelectorControls which pilot has control of the electric cyclic trimmer. Whichever side the trim switch points to has control.
Carbon Monoxide DetectorNot a mandatory item, but a sensible one. CO2 is colourless, odourless and can kill. Indicator will turn black if CO2 is present.
Vertical Speed IndicatorIndicates rate of climb or descent in hundreds of feet per minute. Works by sensing static pressure and displays rate of change of pressure as a rate of change in altitude.
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