Longitudinal Separation

The longitudinal spacing of aircraft at the same altitude by a minimum distance expressed in units of time or miles.

Source: Pilot Contoller Glossary (PCG)

See also:

Reference:

#
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z