Apparatus

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sensors Mode-S transponder

A584C3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N455AV · operated by WESTWIND SCHOOL OF AERONAUTICS PHOENIX LLC DBA, UNITED AVIATE ACADEMY

Hex
A584C3
Octal
51302303
Decimal
10,847,427
Country
US
Tail
N455AV
Type
SR20
Broadcasting now · callsign VAR455 · 2,725 ft
Flights observed
197
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Current position

A584C3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A584C3 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
VAR455 - 197 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-16 VAR455 GYR → GYR Jun 16, 22:25 UTCJun 17, 00:15 UTC1h 50m
2026-06-16 VAR455 GYR → GYR Jun 16, 18:55 UTCJun 16, 20:50 UTC1h 56m
2026-06-16 VAR455 GYR → GYR Jun 16, 15:15 UTCJun 16, 17:15 UTC2h 0m
2026-06-15 VAR455 GYR → GYR Jun 15, 19:39 UTCJun 15, 21:04 UTC1h 25m
2026-06-15 VAR455 - Jun 15, 16:24 UTCJun 15, 17:20 UTC55m
2026-06-15 VAR455 GYR → SCF Jun 15, 15:10 UTCJun 15, 16:15 UTC1h 5m
2026-06-14 VAR455 GYR → GYR Jun 14, 19:55 UTCJun 14, 22:15 UTC2h 20m
2026-06-14 VAR455 GYR → GYR Jun 14, 17:25 UTCJun 14, 18:25 UTC1h 0m
2026-06-14 VAR455 GYR → GYR Jun 14, 15:10 UTCJun 14, 15:20 UTC10m
2026-06-14 VAR455 GYR → GYR Jun 14, 13:20 UTCJun 14, 14:10 UTC50m
2026-06-14 VAR455 GYR → GYR Jun 14, 03:25 UTCJun 14, 05:05 UTC1h 40m
2026-06-14 VAR455 GYR → GYR Jun 14, 00:40 UTCJun 14, 02:30 UTC1h 50m
2026-06-13 VAR455 - Jun 13, 17:50 UTCJun 13, 19:25 UTC1h 35m
2026-06-13 VAR455 - Jun 13, 16:45 UTCJun 13, 16:55 UTC10m
2026-06-13 VAR455 - Jun 13, 15:05 UTCJun 13, 16:30 UTC1h 25m
2026-06-13 VAR455 GYR → GYR Jun 13, 13:05 UTCJun 13, 14:20 UTC1h 15m
2026-06-13 VAR455 - Jun 13, 03:45 UTCJun 13, 05:25 UTC1h 39m
2026-06-13 VAR455 GYR → CGZ Jun 13, 01:10 UTCJun 13, 02:55 UTC1h 45m
2026-06-12 VAR455 GYR → GYR Jun 12, 20:35 UTCJun 12, 23:00 UTC2h 25m
2026-06-11 VAR455 GYR → GYR Jun 11, 17:55 UTCJun 11, 19:10 UTC1h 15m
2026-06-11 VAR455 - Jun 11, 15:30 UTCJun 11, 16:50 UTC1h 20m
2026-06-11 VAR455 GYR → BXK Jun 11, 13:35 UTCJun 11, 15:00 UTC1h 25m
2026-06-11 VAR455 GYR → GYR Jun 11, 05:45 UTCJun 11, 06:00 UTC15m
2026-06-11 VAR455 GYR → GYR Jun 11, 05:30 UTCJun 11, 05:40 UTC10m
2026-06-11 VAR455 GYR → GYR Jun 11, 05:15 UTCJun 11, 05:20 UTC5m
2026-06-11 VAR455 - Jun 11, 04:25 UTCJun 11, 04:40 UTC15m
2026-06-11 VAR455 GYR → GYR Jun 11, 04:10 UTCJun 11, 04:20 UTC10m
2026-06-11 VAR455 - Jun 11, 00:40 UTCJun 11, 02:35 UTC1h 55m
2026-06-10 VAR455 GYR → GYR Jun 10, 21:10 UTCJun 10, 23:05 UTC1h 55m
2026-06-08 VAR455 - Jun 8, 04:35 UTCJun 8, 04:40 UTC5m
2026-06-08 VAR455 GYR → GYR Jun 8, 04:20 UTCJun 8, 04:30 UTC10m
2026-06-07 VAR455 GYR → GYR Jun 7, 22:55 UTCJun 8, 00:15 UTC1h 20m
2026-06-07 VAR455 GYR → GYR Jun 7, 05:50 UTCJun 7, 06:00 UTC10m
2026-06-07 VAR455 GYR → GYR Jun 7, 05:35 UTCJun 7, 05:45 UTC10m
2026-06-07 VAR455 GYR → GYR Jun 7, 05:10 UTCJun 7, 05:20 UTC10m
2026-06-06 VAR455 - Jun 6, 23:19 UTCJun 7, 01:09 UTC1h 50m
2026-06-06 VAR455 GYR → GYR Jun 6, 23:05 UTCJun 6, 23:09 UTC5m
2026-06-06 VAR455 - Jun 6, 21:09 UTCJun 6, 22:15 UTC1h 5m
2026-06-06 VAR455 GYR → GYR Jun 6, 18:45 UTCJun 6, 20:00 UTC1h 15m
2026-06-06 VAR455 GYR → GYR Jun 6, 04:00 UTCJun 6, 05:35 UTC1h 35m
2026-06-05 VAR455 GYR → GYR Jun 5, 22:35 UTCJun 6, 01:20 UTC2h 45m
2026-06-05 VAR455 GYR → GYR Jun 5, 00:50 UTCJun 5, 02:25 UTC1h 35m
2026-06-04 VAR455 GYR → GYR Jun 4, 19:45 UTCJun 4, 21:20 UTC1h 35m
2026-06-04 VAR455 GYR → GYR Jun 4, 17:10 UTCJun 4, 18:25 UTC1h 15m
2026-06-02 VAR455 GYR → GYR Jun 2, 22:30 UTCJun 3, 01:40 UTC3h 10m
2026-06-02 VAR455 GYR → GYR Jun 2, 03:35 UTCJun 2, 05:00 UTC1h 25m
2026-06-02 VAR455 GYR → GYR Jun 2, 00:15 UTCJun 2, 02:30 UTC2h 15m
2026-05-27 VAR455 GYR → GYR May 27, 22:05 UTCMay 28, 00:15 UTC2h 10m
2026-05-27 VAR455 GYR → GYR May 27, 19:00 UTCMay 27, 21:00 UTC2h 0m
2026-05-26 VAR455 - May 26, 18:10 UTCMay 26, 18:30 UTC20m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N455AV page for operator, model, and routing details .

Mode-S A584C3 frequently asked

What is Mode-S code A584C3?
A584C3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N455AV.
Where is Mode-S A584C3 registered?
Mode-S code A584C3 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A584C3 broadcasting right now?
Yes. Mode-S A584C3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A584C3, octal 51302303, decimal 10,847,427.
What flights does A584C3 operate?
Mode-S A584C3 has broadcast 1 distinct callsign, including VAR455.