Squawk codes

GPTKB entity

Statements (25)
Predicate Object
gptkbp:instanceOf Aviation transponder code
gptkbp:alsoKnownAs Discrete codes
Transponder codes
gptkbp:assignee Air traffic controller
gptkbp:code7500Meaning Hijacking
gptkbp:code7600Meaning Radio communication failure
gptkbp:code7700Meaning General emergency
gptkbp:displayedAt Radar screen
gptkbp:enteredInto gptkb:Pilot
gptkbp:format Four-digit octal code
https://www.w3.org/2000/01/rdf-schema#label Squawk codes
gptkbp:monitors Air traffic control radar
gptkbp:notUsed Codes ending in all sevens except 7777
Codes ending in all zeros except 0000
gptkbp:purpose Identification of aircraft
gptkbp:range 0000 to 7777
gptkbp:regulates gptkb:ICAO
gptkbp:specialCode 7600
7500
7700
gptkbp:transmittedBy Aircraft transponder
gptkbp:usedBy gptkb:aircraft
gptkbp:usedIn gptkb:Air_traffic_control
gptkbp:bfsParent gptkb:Aviation_Communication
gptkbp:bfsLayer 7