Garmin GPS 400 Pilot's Manual And Reference page 157

TIME AND DISTANCE
TO PROFILE
CURRENT ALTITUDE
AND POSITION
FF(fuel flow)
—The fuel flow rate,
expressed in fuel units per time
(e.g., gallons per hour).
FOB(fuel on board)
—The total amount
of usable fuel on board the aircraft.
GS(ground speed)
—The velocity you are
travelling relative to a ground position.
HDG(heading)
—The direction an aircraft
is pointed, based upon indications from a
magnetic compass or a properly set direc-
tional gyro.
Navigation
TARGET ALTITUDE
AND POSITION
DISTANCE TO TARGET
IND(indicated)
by properly calibrated and set instrumenta-
tion in the aircraft panel (e.g., "indicated
altitude").
LFOB(left-over fuel onboard)
amount of fuel remaining on board after the
completion of a one or more legs of a flight
plan (or a direct-to).
LRES(left-over fuel reserve)
amount of fuel remaining on board after the
completion of a one or more legs of a flight
plan (or a direct-to), expressed in time and
based upon a known fuel consumption
(flow) rate.
Vertical
TKE(track angle error)
ference between the desired track and your
current track. An arrow indicates the prop-
er direction to turn to reduce TKE to zero.
AIRPORT
TRK(track)
—Information provided
relative to a ground position. Also referred
to as "ground track".
VSR(vertical speed required)
tical speed necessary to descend/climb from
—The
current position and altitude to a defined
target position and altitude, based upon
your current ground speed.
XTK(crosstrack error)
—The
you are off a desired course in either direc-
tion, left or right.
MESSAGES,
8
aBBREVIATIONS
& nav tERMS
—The angle dif-
—The direction of movement
—The ver-
—The distance