Detailed system operation 20, Detailed system operation 21, Rev. 0 apr/99 – BendixKing KI 525A System KFC 225 User Manual
Page 23: Front course ils approach
Detailed System Operation
20
KFC 225 AUTOMATIC FLIGHT CONTROL SYSTEM
Rev. 0
Apr/99
KFC 225 AUTOMATIC FLIGHT CONTROL SYSTEM
Detailed System Operation
21
Rev. 0
Apr/99
3. At the middle marker, the pilot disengages the
autopilot for landing, or may press the Go-
Around button, also disengaging the autopilot to
initiate a missed approach. This cancels APR
and GS modes and engages the Flight Director
in ROL (wings level) and GA (Pitch Attitude
Hold) at GA pitch angle. A flashing AP is dis-
played and a disconnect tone is heard.
4. The pilot may now re-engage the autopilot.
Press HDG to engage the heading mode to fly
the missed approach. Press CWS and pitch the
aircraft to obtain best climb. This will sync the
command bars and change the annunciation to
PIT from GA. Finally, pressing the ARM button
will arm the selected altitude.
GS
GS
ı
NAV
HDG
N
3
3
30
W
24
21
S
15
12
E
6
3
AIR
ı
DH
20
10
10
20
10
20
20
10
AP
VS
ARM
G
KFC 225
HDG
NAV
APR
REV
ALT
FD
DN
UP
YD
P R
ALT SEL
N
33
30
W
24
21
S
15
12
E
6
3
GS
GS
ı
NAV
HDG
AP
VS
ARM
G
KFC 225
HDG
NAV
APR
REV
ALT
FD
DN
UP
YD
P R
ALT SEL
AIR
ı
DH
20
10
10
20
10
20
20
10
AIR
N
1
2
3
4
058
°
090
°
238
°
1. Continuing the Front Course for Procedure Turn
to ILS Approach maneuver, APR coupling
occurs (HDG annunciation changes to APR),
and the glideslope mode is automatically
armed. The autopilot will capture the localizer
and the CDI course index will center.
2. The autopilot is following the localizer. At the
outer marker, the glideslope deviation needle is
at midscale. Altitude hold is automatically disen-
gaged when the glideslope is captured. The ALT
annunciation extinguishes and GS is displayed.
The autopilot will make pitch and bank changes
as necessary to maintain localizer and glides-
lope.
GS
GS
ı
NAV
HDG
N
3
3
30
W
24
21
S
1
5
12
E
6
3
AP
VS
ARM
G
KFC 225
HDG
NAV
APR
REV
ALT
FD
DN
UP
YD
P R
ALT SEL
AIR
ı
DH
20
10
10
20
10
20
20
10
AIR
N
3
3
30
W
24
21
S
15
12
E
6
3
GS
GS
ı
NAV
HDG
AP
VS
ARM
G
KFC 225
HDG
NAV
APR
REV
ALT
FD
DN
UP
YD
P R
ALT SEL
AIR
ı
DH
20
10
10
20
10
20
20
10
AIR
1
2
3
4
Front Course ILS Approach