Table 3C-4. Flight Director Annunciations (Continued)
FD ANNUNCIATOR INPUT
NAV Capture (while LOC is the NAV source)
Vertical Arm 1
Vertical Arm 2
f. Rate of Turn Indicator. The indicator
displays turn rate information. It is located below the
lateral deviation scale and consists of a three-bar
scale with an indicator shown as a white bar outlined
in black. The pointer will deflect either left or right
indicating the turn rate in that direction. The pointer
moves a maximum of 2 bars, twice the standard rate
turn. Refer to Table 3C-5.
Heading data is used to calculate the rate of
turn. If this source is flagged, the rate of turn goes
invalid. The pointer and scale are removed when the
rate of turn is invalid.
Table 3C-5. Rate of Turn Scale
Widths (1 bar)
Standard Rate Turn
g. Rising Runway. The rising runway is shown
in green, white, and magenta, outlined in black when
the course source is a localizer, back course, or FMS
approach mode. During localizer or FMS approach
deviation, the pointer is a trapezoidal runway symbol.
When the radio altitude reaches 200 feet while in LOC,
BC, or FMS approach mode, the runway symbol starts
to rise. The symbol achieves maximum height when
the radio altitude is at a value of zero feet. The rising
runway correlates to approximately the bottom of the
aircraft symbol. If the localizer or FMS deviation is
invalid or unavailable, the rising runway will be
removed. If the radio altitude fails, the rising runway
does not rise.
h. Radio Altitude Display. Radio altitude is
displayed in white above the decision height readout
area. The display appears automatically when within
the radio altitude range (2500 feet) and changes to
50-foot increments between 2500 and 1000 feet,
10-foot increments between 999 and 100 feet, and
5-foot increments below 99 feet.
Loss of radio altitude data will cause loss
of the TCAS II due to the absence of
required input data.
Radio altitude data is rate-limited to prevent
nuisance radio altimeter changes as the result of fast
changing data (uneven terrain). The digital readout
will blank for valid radio altitude data less than 0 feet or
over 2500 feet.
When a failure is detected, the radio altitude
display is dashed red and the black letters RA in a
solid red box are annunciated. DH set and the DH
annunciator are also removed.
i. Decision Height Set Readout. Decision
height set is displayed in the lower right corner and is