AUTOFLIGHT, CAT I
Description
Aircraft Operations Manual
3.1
S
PAGE
11
Jun 01/19
A13591
A
DISTANCE
1
2
4
6
.5
0
.5
1
2
4
VS
1000 FPM
VSR
DN
BEFORE
ANG ARM
SETUP
NM
FT
FT
DEG
NM
NM
OFFSET
STA.EL.
ALT
ANG
TO TRK
TO ALT
SETUP display and annunciators.
Used together with the function switch and SET/PUSH SEL
knob to set up aimpoint
parameters.
Offset annunciator.
Indicates that the aimpoint is BEFORE or AFTER the DME/
VORTAC station.
Arm annunciator.
Annunciates VS ARM when the PUSH TEST knob is used to
set up the Vertical Speed Required (VRSO) to the aimpoint.
Annunciates ANG ARM when the function switch and the SET/
PUSH SEL knob is used to set the path angle to the aimpoint.
SET/PUSH SEL knob.
Selects different SETUP parameters.
Function switch.
USE
Momentary selection activates second aimpoint
parameters.
PRE
Used to pre
−
set a second aimpoint.
ACT
Used to set up the first aimpoint.
DIR
Momentary selection initiates a direct
−
to
−
aimpoint
(from present position).
Vertical Speed (VS) bug.
Indicates selected VS when the AP FD is in
the VS mode, and initial VS selected with the
PUSH TST knob when not in the VS hold.
A
VERTICAL NAVIGATION INDICATOR
(VNI) (IF INSTALLED)
DISTANCE display and annunciators.
Indicates distance from aircraft to path capture
when TO TRK annunciates NM and to aimpoint
when TO ALT annunciates NM.
Vertical Speed Required (VSR) display.
Shows the computed VSR to reach the aim-
point. The display goes blank if the computed
VSR is greater than 30 000 FPM or if the VNI
does not receive distance information.
PUSH TST knob.
Slews the VS bug when rotated and initiates
VNI self test when pushed.
TEST
−
VS pointer goes to 6000 FPM up.
−
VS flag (red) appears.
−
VS bug goes 6000 FPM down.
−
OFFSET annunciator sequences from black
to BEFORE to black to AFTER to black.
−
ARM annunciator sequences from black to
ANG ARM to black to VS ARM to black.
−
SETUP and DISTANCE annunciators
sequentially show:
−
SETUP display indicates 888.8.8.
−
DISTANCE display indicates 18.8.
−
VSR display indicates.8.8.
ANNUNCIATOR
OFFSET
STA. EL
ALT
ANG
TO TRK
TO ALT
UNITS
NM
FT
FT
DEG
NM
NM
Fig. 4 VNI
−
controls and indicators
−
if installed
