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ModeSMessageAltitudeIsMetric Property
Gets or sets a value indicating that the AC field had the M bit set, which indicates that Altitude is in metric units.

Namespace: VirtualRadar.Interface.ModeS
Assembly: VirtualRadar.Interface (in VirtualRadar.Interface.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax
public Nullable<bool> AltitudeIsMetric { get; set; }

Property Value

Type: NullableBoolean
Remarks
This is reserved for the formatting of altitude in metric units. However it appears that such an encoding has not yet (Jul 2012) been specified - if you see this set in a message then the message was likely corrupt and should be discarded.
See Also