Table of Contents
Advertisement
SECTION 9
SUPPLEMENT 8
SECTION 7 - DESCRIPTION AND OPERATION (Continued)
EHSI DISPLAYS
Standard EHI 40 displays, which may be referred to as key points of the
display, are discussed in the following paragraphs (refer to figure 7-5):
1.
Normal Compass Card Display - A 360 degree rotating white
compass scale indicates the aircraft heading referenced to the white
triangular heading index (lubber line). The compass scale is divided
in 5 degree increments with the 10 degree divisions approximately
twice as long as the 5 degree marks. Fixed 45 degree index marks are
adjacent to the compass scale.
2. Symbolic Aircraft - The symbolic aircraft provides a visual reference
of the aircraft position in relationship to the deviation bar.
3. Navigation Source Annunciation - A vertical three letter
alphanumeric readout, located on the left side of the display,
indicates the navigation selecting system selected as the primary
navigation sensor.
The cross side navigation system may be selected for display by
pressing the 1-2 push button. Example: pilot selecting number 2
navigation system (LOC 2).
Green annunciation indicates an on side approach approved NAV
system and yellow indicates any cross side system has been selected,
whether approach approved or not. Cyan (light blue) annunciations
apply to on side non-approach approved NAV systems. These color
codes apply to the NAV source annunciator, CRS pointer and CDI,
CRS line in MAP mode, CRS readout, distance, ground speed
readout, and time to station.
A power failure to NAV 2 when LOC 2 is the
primary nav sensor is indicated by the removal
of the nav display and flagged with a red X.
The primary nav sensor annunciator will revert
to VOR 2.
REPORT: VB-1710
9-58 16 of 26
NOTE
ISSUED: FEBRUARY 23, 1999
PA-46-350P, MALIBU
Advertisement
Table of Contents
