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Introduction
General Description
The KFC 225 Three Axis system provides lateral, vertical and optional yaw
modes with altitude preselect.
DH
20
10
10
20
ı
NAV
GS
ı
YD
G
P
R
AP
FD
HDG
NAV
System Integration
The system diagram on the next page shows the components and their rela-
tionship in a typical KFC 225 system. The actual components on individual
systems may vary slightly depending on certification and installation require-
ments.
The system diagram reflects that the KFC 225 system controls pitch, roll and
yaw (optional) axes of the aircraft.
2
KFC 225 AUTOMATIC FLIGHT CONTROL SYSTEM
AIR
20
10
10
20
AIR
HDG
GS
ARM
VS
UP
APR
REV
ALT
DN
KFC 225
Apr/99
A/P Master Switch
AP
HDG
YD
Remote Mode
Annunciator
ALT
B
KLN 90B TSO
NAV
FPL
MODE
TRIP
Rev. 0
Rev. 0
Apr/99
AP
NAV
REV
ALT
VS
OR
TRIM
APR
GS
CAP
GA
FAIL
TRIM
ARM
ARM
ALT
KA 285
Trim Fail
Annunciaor
AIR
DH
YD
G
20
20
10
10
10
10
P
R
20
20
AP
FD
HDG
NAV
APR
REV
AIR
ı
KI 256 Attitude Gyro
0
0
9
600
1
9
1
0,
500
8
2
8
400
2
ALT
ALT
OR
7
MB
IN HG
3
6
3
7
101
29.99
5
6
4
ENCODING
6
4
5
5
B
KEA 346
KEA 130A
Servoed
Encoding
Altimeter
Altimeter
TST
4.
CRS
350
NM
5
120 KT
REF
12
N
11.
NAV
N
HDG
1
5
2
GS
GS
OR
L
O
N
A
C
G
S
V
1
H
A
S
R
I
C
330°
ADF 2
CRS
ı
HDG
BRT
KCS 55A
EHI 40
Compass
EFIS
System
OFF
50
GPS
DH
1
BRT
2
RADAR
ALTITUDE
CRSR
CRSR
3
NAV
APT
4
CALC
D/T
VOR
STAT
PULL
25
SETUP
ACTV
SCAN
NDB
X 100 FEET
OTHER
ALT
D
REF
INT
20
5
MSG
CLR
ENT
CTR
SUPL
15
10
ı
ı
Optional
Optional KRA 10A
ARINC 429
Radar Altimeter
GPS Interface
System
Optional Dual
Control Wheel Switches
KFC 225 System Diagram
KFC 225 AUTOMATIC FLIGHT CONTROL SYSTEM
Introduction
Audio Alert
Remote Terminal
I/F Connector
(AFCS Maint. Plug)
KCM 100
Configuration
Module
KC 225
Flight Computer
ARM
VS
Aircraft
UP
Static
ALT
DN
Port
KFC 225
KS 271C
Roll Servo
KS 270C
Pitch Servo
KS 272C
Trim Servo
Optional Yaw Axis
KS 271C
Yaw Servo
KRG 331
or
KRG 332
Rate Gyro
Control Wheel Switches
3
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