TM 1-1510-218-10
3-80
(19) NO SUP WAPTS - Appears when the
SUP type pages have been selected if the KLN 90B
doesn't contain a database cartridge and there are no
user-defined supplemental waypoints.
(20) NO VOR WPTS - Appears when the VOR
type pages have been selected if the KLN 90B doesn't
contain a database cartridge and there are no user-
defined VOR waypoints.
(21) OUTDATED DB - Appears whenever the
pilot attempts to select an approach from an outdated
database.
(22) RMKS FULL - Appears when an attempt
is made to create a user-entered airport remark on the
APT 5 page if 100 user-entered airport remarks
already exist.
(23) RWY MISSING - Appears when the APT
3 page runway diagram shows some, but not all, of the
runways at the selected airport.
(24) USED IN FPL - Appears when an attempt
is made to delete a user-defined waypoint on the OTH
3 page if the waypoint is used in a flight plan.
(25) USR DB FULL - Appears with an attempt
to create a user-defined waypoint if the user database
already contains 250 waypoints.
bk. Abbreviations. For a complete list of
abbreviations, see Allied Signals Pilot's Guide for the
KLN 90B Navigation System.
Section IV. RADAR AND TRANSPONDER
3-8. GENERAL.
The radar and transponder group provides
identification, position, emergency tracking system,
and a radar system to locate weather areas. The
common radar and transponder equipment consists of
the stormscope (WX-1000E) and the transponder set
(AN/APX-100).
3-9. STORMSCOPE (WX-1000E).
a. Description. The Stormscope system
consists of three components that detect, locate, and
map areas of vertical electrical discharge activity
contained within thunderstorms. The antenna mounts
externally to the aircraft and detects electrical
discharges associated with thunderstorms over a
125,000 square mile area around the aircraft. The
processor
analyzes
this
information
to
aid
in
identification
of
valid
electrical
discharges
from
lightning and to determine range and azimuth for
display in the cockpit. The analysis is completed in
milliseconds. The location of a vertical electrical
discharge associated with thunderstorms is plotted on
the CRT display on the instrument panel as an
individual discharge point (+).
b. Controls and Functions.
(1) Power/Brightness Control. Rotate to turn
on the system and adjust the brightness of the display.
(2) Selector Buttons. The specific function of
each button is displayed adjacent to the button in each
operating mode.
c. Normal Operation.
(1) Self-Test. Each time the system is turned
on, it will automatically cycle through a series of self–
tests which ensure that all major functions are
operating
properly.
These
tests,
which
take
approximately 15 seconds to complete, check antenna
reception, processor circuitry calibration, memory and
microprocessor function, and proper operation of the
options. After proper operation has been verified by
the self–test program, a confirmation message, ALL
TESTS ARE OK, will display in reverse video. This
message will remain on the display for approximately
3 seconds and then will be replaced automatically with
MAIN MENU.
If the system fails any of the internal tests, an
error message will appear indicating which test failed
and which functions may be inoperative. In most
cases, all other systems will continue to operate. If
continued operation is possible, the message, PRESS
ANY KEY TO CONTINUE, displays.
When initially turned on, the system may
complete its self-test program before the CRT comes
on. In that case it is possible that the first message
that will be seen is the main menu. This is normal
operation.
If the weather screen is selected immediately, it
is possible the advisory message FLAG will display
where heading information is normally displayed. This
usually means the gyro system has not yet come up to
speed. FLAG should be replaced with heading
information momentarily.
