Avidyne IFD540, Руководство пилота

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NEGATIVE CLIMB RATE / ALTITUDE LOST AFTER TAKEOFF
The final function of the TAWS system is the alert for a negative
climb rate (NCR) or excessive altitude lost after takeoff/go-
around. Takeoff/Go-around state is defined as a 100’ climb
inside the FLTA Exclusion area (i.e. “airport environment”) when
between 100’ AGL and 700’ AGL.
This function has two algorithms that run whenever the aircraft is
in that takeoff/go-around state. The first one is a Negative Climb
Rate calculation that alerts if the vertical speed as derived by the
FMS/GPS becomes a negative value between -100 fpm and -500
fpm after takeoff/go-around, depending on aircraft altitude. The
second algorithm is an Accumulated Altitude Loss calculation that
alerts if GPS-derived AGL altitude decreases by 10% after
takeoff/go-around (e.g. if the aircraft is at 600’ AGL, it can lose 60’
down to 540’ AGL before an alert is triggered).
The alerts will clear if the CAS message is acknowledged or the
aircraft AGL altitude increases past the previous highest value.
This function will generate a “Don’t Sink” aural alert and
associated yellow caution CAS message. NCR is disabled for
helicopters.
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Sink Rate (FPM)
Negative Climb Rate - Sink Rate Alert Criteria
"Don't Sink"