Contraction

Definition

Usage

JAL

jet approach landing charts

GEN

JATO

jet assisted take­off

ATC

JAWYS

join airways

ATC

J­BAR

jet runway barrier

ATC

JCTN

junction

GEN

JOUR

journeyman

GEN

JP

jet penetration

ATC

JPAP

jet penetration approach

ATC

JTST

jet stream

ICAO

JTSTR

jet stream

NWS