Abnormal Circumstances - Honeywell KFC 150 Pilot's Manual

11.
12.
The glideslope deviation pointers should
become visible on both sides of the dis-
play when a usable glideslope signal is
received. If they do not come into view, a
usable glideslope signal is not being
received.
The glideslope pointers indicate the rela-
tive position of the glideslope path with
respect to the aircraft. (In other words, if
the pointers are above the center marker,
the aircraft is below the glideslope.)
Abnormal Circumstances
If the Warning Flag (HDG) appears
during operation, the compass card indica-
tions will be in error. Power may be
removed from the KG 102A Directional Gyro
by pulling the appropriate circuit breaker.
The Selected Course, VORLOC Deviation
Bar, the NAV flag, and the ToFrom Indicator
will remain in operation.
If the Navigation Warning Flag (NAV)
appears during operation, there are several
possibilities: (1) the NAV receiver is not
turned on, (2) the NAV receiver is improper-
ly tuned, (3) the ground VOR or
LOC
station
is malfunctioning, (4) the aircraft is out of
range of the selected ground station, (5) the
aircraft NAV receiver has malfunctioned, (6)
if in RNAV mode the DME has malfunc-
tioned. (The compass card will continue to
display the aircraft heading even if a usable
NAV signal is not being received.)
If the glideslope pointers remain out of
view during a front course
ILS
approach,
either the aircraft glideslope receiver or the
ground station glideslope transmitter is mal-
functioning. Glideslope is usually not avail-
able during a back course approach. (The
VOR and
LOC
course display will continue
to function normally even if a usable glides-
lope signal is not being received.)
A continuous large deflection of the
slaving meter or large discrepancies
between the magnetic compass and the KI
525A compass card may indicate a failure
in the slaving system. If a slaving failure
should occur, the Slave/Free Switch should
be moved to select the free gyro mode.
Then, by using manual clockwise or coun-
terclockwise corrections, the compass card
can be rotated to the correct heading as
indicated on the standby compass. The
KCS 55A system should continue to func-
tion normally except the heading informa-
tion will be solely derived from the KG 102A
Directional Gyro. There will be no automat-
ic heading correction and periodic adjust-
ments must be made manually to correct for
precession by reference to the standby
magnetic compass, as with any directional
gyro.
NOTE: It is desirable to disconnect the
autopilot under the following conditions:
1. HDG flag comes into view.
2. System is in fast slave.
3. During manual slaving.
The system has the capability to sup-
ply the autopilot with an automatic discon-
nect signal under these conditions.
NOTE:
For system limitations in your partic-
ular aircraft type, refer to your Flight Manual
Supplement.
102