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Page Title:
Standard Legend and Definitions for AFCS Control Panel |
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|  MIL-C-18244A(WEP)
DEFINITION
ABBREVIATION
NOMENCLATURE
Aircraft is automatically
GLIDE
GLIDE
positioned to the center of the
glide slope beam.
Aircraft gound speed automati-
GND SPD
GROUND
SPEED
cally Controlled to a computed
value.
A control feature permitting
HDG SEL
HEADING SELECT
accurate selection or preselec-
tion of a desired heading or
headings.
Automatic control of aircraft to
HDG
HEADING HOLD
maintain heading existing at the
instant of engagement.
Indicated airspeed existing at
IAS
INDICATED AIRSPEED
time of engagement maintained
automatically.
Aircraft is automatically posi-
LOC
LOCALIZER
tioned to and held at the center
of the localizer beam.
A system control feature which
LEVEL
AUTOMATIC
LEVELING
automatically returns the air-
craft to level flight attitude in
roll and pitch.
Control of the aircraft to reds-
MACH
MACH
HOLD
tab the Mach number existing
at the instant of engagement.
Control mode in which the air-
NAVIGATION
NAV
craft heading is determined by
signals from navigation equip-
ment.
Pertains to control of the air-
PITCH
PITCH
craft about its lateral area.
Control of the aircraft to an
RAD ALT
RADAR
ALTITUDE
altitude determined by signals
from a radar/radio altimeter.
Automatic rotor speed control
RPM
REVOLUTIONS PER MINUTE
referenced to a helicopter rotor
tachometer.
Pertains to control of the air-
ROLL
ROLL
craft about its longitudinal axis,
A state of system control in
STAB AUG
STABILITY
AUGMENTATION
which an automatic device
operates to augment the stability
characteristics of an aircraft.
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