BendixKing KI 525A System KFC 225 - Manual (Page 10)

Introduction
4 KFC 225 AUTOMATIC FLIGHT CONTROL SYSTEM
Rev. 0
Apr/99
AP
VS ARM
G
KFC 225
HDG NAV APR REV ALT FD DN
UP
YD
P R
ALT SEL
KFC 225 Preflight Test Complete
AP
VS ARM
G
KFC 225
HDG NAV APR REV ALT FD DN
UP
YD
P R
ALT SEL
KFC 225 Preflight Test
Power Application and Preflight Tests
A preflight test is performed
upon power application to the com-
puter. This test is a sequence of
internal checks that validate proper
system operation prior to allowing
autopilot engagement. The preflight
test (PFT) sequence is indicated by
“PFT” with an increasing number for
the sequence steps. Successful
completion of self test is identified by
all display segments being illumi-
nated (Display Test), the Flight
Director command bars brought into
view and the disconnect tone sound-
ing.
NOTE: Following the preflight test,
the red P warning on the face of the
autopilot may illuminate indicating
that the pitch axis cannot be
engaged. This condition should be
temporary, lasting no more than 30
seconds. The P will extinguish and
normal operation will be available.