erence since the King Air C90GTi/C90GTx is
certified only to CAT I minimums.
Figure 16-34. Radio Altitude Minimum
Setting BARO MIN is the desired minimum
reference altitude. This will create a cyan bar
across the altitude tape at the altitude selected
(Figure 16-35).
Figure 16-35. Barometric Minimum
An additional benefit of setting BARO MIN
is that the altitude preselector can be set to the
exact BARO MIN value. For example, if
BARO MIN is set to 1830, the preselected al-
titude can now be set to 1830 to allow for au-
topilot capture at the desired MDA. The
BARO MIN can be set to the nearest ten feet
of altitude.
Both RA MIN and BARO MIN will generate
a “MINIMUMS” aural callout and flashing
MIN annunciator on the PFDs (Figure 16-36).
If the aircraft continues below the values, the
RA MIN hollow bar will turn yellow or the
BARO MIN altitude bar will turn yellow. The
minimum reference displayed is the last one
adjusted (e.g., if RA was set first and then
BARO, the BARO minimums are the only
ones displayed). Baro min’s and RA min’s can
both be set, but only the one that is cyan will
be the active minimum reference.
Figure 16-36. Minimums Annunciator
The last option on the right side of the menu is
VREF. This acts just like the V-speeds dis-
cussed earlier. Once one pilot adjusts the value
it will turn cyan for both pilots and will place
a bug on both airspeed tapes.
REFS Page 2
There is a second page to the REFS menu
(Figure 16-37). This is accessed by pressing the
REFS key a second time.
14
000
6
60
540
20
400
600
700
30.16IN
Radio Altitude
Zero
MIN 200 RA
RAD
Minimum
Altitude
Radio Altitude
Minimum Setting
6720
6
60
540
20
400
600
700
30.16IN
MIN 6720 BARO
BARO
Minimum
Altitude
barometric
minimum
setting
10
10
20
GS
14
000
6
60
540
20
400
600
700
1
2
4
4
2
1
30.16
IN
<
6935
E
350
4
w
251
MIN
MIN 6600 BARO
1
FOR TRAINING PURPOSES ONLY
16-18
KING AIR C90GTi/C90GTx
PILOT TRAINING MANUAL
16
A
VIONICS
Summary of Contents for C90GTi
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