Apparatus

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sensors Mode-S transponder

A4DF59

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N413AV · operated by WESTWIND SCHOOL OF AERONAUTICS PHOENIX LLC DBA, UNITED AVIATE ACADEMY

Hex
A4DF59
Octal
51157531
Decimal
10,805,081
Country
US
Tail
N413AV
Type
SR20
No current signal · last broadcast 1d ago
Flights observed
117
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A4DF59.

Country allocation

The ICAO 24-bit address A4DF59 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
VAR413 - 117 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 VAR413 - May 29, 03:30 UTCMay 29, 05:15 UTC1h 45m
2026-05-29 VAR413 - May 29, 00:30 UTCMay 29, 02:05 UTC1h 35m
2026-05-28 VAR413 GYR → GYR May 28, 21:20 UTCMay 28, 23:35 UTC2h 15m
2026-05-28 VAR413 GYR → GYR May 28, 17:55 UTCMay 28, 19:05 UTC1h 10m
2026-05-28 VAR413 BXK → GYR May 28, 15:45 UTCMay 28, 16:55 UTC1h 10m
2026-05-28 VAR413 GYR → BXK May 28, 13:45 UTCMay 28, 14:55 UTC1h 10m
2026-05-28 VAR413 - May 28, 01:30 UTCMay 28, 02:05 UTC35m
2026-05-28 VAR413 - May 28, 00:00 UTCMay 28, 00:45 UTC45m
2026-05-27 VAR413 GYR → VGT May 27, 20:25 UTCMay 27, 22:35 UTC2h 10m
2026-05-27 VAR413 GYR → GYR May 27, 16:50 UTCMay 27, 18:55 UTC2h 5m
2026-05-27 VAR413 - May 27, 01:39 UTCMay 27, 03:24 UTC1h 45m
2026-05-26 VAR413 GYR → GYR May 26, 22:50 UTCMay 27, 00:44 UTC1h 55m
2026-05-26 VAR413 HII → GYR May 26, 20:00 UTCMay 26, 21:29 UTC1h 30m
2026-05-26 VAR413 GYR → HII May 26, 18:50 UTCMay 26, 19:55 UTC1h 5m
2026-05-25 VAR413 - May 25, 20:59 UTCMay 25, 23:19 UTC2h 20m
2026-05-25 VAR413 - May 25, 19:15 UTCMay 25, 19:44 UTC30m
2026-05-25 VAR413 - May 25, 17:40 UTCMay 25, 18:25 UTC45m
2026-05-24 VAR413 GYR → GYR May 24, 17:55 UTCMay 24, 19:20 UTC1h 25m
2026-05-21 VAR413 GYR → GYR May 21, 23:35 UTCMay 22, 00:55 UTC1h 20m
2026-05-21 VAR413 GYR → GYR May 21, 23:10 UTCMay 21, 23:15 UTC5m
2026-05-21 VAR413 GYR → GYR May 21, 18:40 UTCMay 21, 19:55 UTC1h 15m
2026-05-21 VAR413 - May 21, 17:00 UTCMay 21, 17:15 UTC15m
2026-05-21 VAR413 - May 21, 15:45 UTCMay 21, 16:45 UTC1h 0m
2026-05-21 VAR413 - May 21, 05:10 UTCMay 21, 05:15 UTC5m
2026-05-21 VAR413 GYR → GYR May 21, 04:50 UTCMay 21, 05:00 UTC10m
2026-05-21 VAR413 GYR → GYR May 21, 04:30 UTCMay 21, 04:40 UTC10m
2026-05-21 VAR413 GYR → GYR May 21, 04:05 UTCMay 21, 04:15 UTC10m
2026-05-21 VAR413 GYR → GYR May 21, 03:45 UTCMay 21, 03:50 UTC5m
2026-05-21 VAR413 GYR → GYR May 21, 01:00 UTCMay 21, 02:20 UTC1h 20m
2026-05-20 VAR413 GYR → GYR May 20, 22:45 UTCMay 21, 00:10 UTC1h 25m
2026-05-20 VAR413 GYR → GYR May 20, 18:55 UTCMay 20, 21:40 UTC2h 45m
2026-05-20 VAR413 - May 20, 17:10 UTCMay 20, 17:45 UTC35m
2026-05-20 VAR413 - May 20, 16:25 UTCMay 20, 17:00 UTC35m
2026-05-18 VAR413 GYR → GYR May 18, 21:45 UTCMay 18, 22:55 UTC1h 10m
2026-05-17 VAR413 GYR → GYR May 17, 21:50 UTCMay 17, 23:30 UTC1h 40m
2026-05-17 VAR413 GYR → GYR May 17, 18:01 UTCMay 17, 20:15 UTC2h 15m
2026-05-17 VAR413 GYR → GYR May 17, 14:25 UTCMay 17, 16:40 UTC2h 15m
2026-05-17 VAR413 - May 17, 05:15 UTCMay 17, 05:20 UTC5m
2026-05-17 VAR413 - May 17, 04:40 UTCMay 17, 04:45 UTC5m
2026-05-17 VAR413 GYR → GYR May 17, 04:15 UTCMay 17, 04:25 UTC10m
2026-05-17 VAR413 GYR → GYR May 17, 03:50 UTCMay 17, 04:00 UTC10m
2026-05-17 VAR413 VGT → GYR May 17, 00:55 UTCMay 17, 02:50 UTC1h 55m
2026-05-16 VAR413 - May 16, 21:55 UTCMay 16, 23:40 UTC1h 45m
2026-05-16 VAR413 - May 16, 20:45 UTCMay 16, 21:05 UTC20m
2026-05-16 VAR413 - May 16, 18:40 UTCMay 16, 20:35 UTC1h 55m
2026-05-16 VAR413 GYR → GYR May 16, 15:31 UTCMay 16, 17:35 UTC2h 5m
2026-05-16 VAR413 BXK → GYR May 16, 04:30 UTCMay 16, 04:45 UTC15m
2026-05-16 VAR413 GYR → BXK May 16, 04:00 UTCMay 16, 04:15 UTC15m
2026-05-15 VAR413 GYR → GYR May 15, 20:40 UTCMay 15, 21:10 UTC30m
2026-05-15 VAR413 - May 15, 00:15 UTCMay 15, 00:55 UTC40m

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 N413AV page for operator, model, and routing details .

Mode-S A4DF59 frequently asked

What is Mode-S code A4DF59?
A4DF59 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N413AV.
Where is Mode-S A4DF59 registered?
Mode-S code A4DF59 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 A4DF59 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4DF59, octal 51157531, decimal 10,805,081.
What flights does A4DF59 operate?
Mode-S A4DF59 has broadcast 1 distinct callsign, including VAR413.