U.S. DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION Air Traffic Organization Policy
Subject: Contractions Includes: Change 2 dated 3/5/15 and Change 1 dated 11/13/14
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Z
Contraction
Definition
Usage
Greenwich Mean Time
GEN
jet terminal area
ATC
ZI
zonal index
NWS
zone of interior
ZM
Z marker (VHF station location marker)
ZRNO
freezing rain information not available (weather reports only)
