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sensors Mode-S transponder

A20479

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N229WW · operated by MCGREGOR DANIEL A

Hex
A20479
Octal
50402171
Decimal
10,617,977
Country
US
Tail
N229WW
Type
T206
No current signal · last broadcast Jul 26, 05:20 UTC
Flights observed
94
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 05:20 UTC

Last known position

Most recent position reported by Mode-S A20479.

Country allocation

The ICAO 24-bit address A20479 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
N229WW - 94 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N229WW - Jul 26, 03:55 UTCJul 26, 05:20 UTC1h 25m
2026-07-26 N229WW - Jul 26, 01:45 UTCJul 26, 02:25 UTC40m
2026-07-25 N229WW - Jul 25, 22:40 UTCJul 25, 23:50 UTC1h 10m
2026-07-25 N229WW - Jul 25, 21:20 UTCJul 25, 22:20 UTC1h 0m
2026-07-24 N229WW - Jul 24, 05:05 UTCJul 24, 05:35 UTC30m
2026-07-24 N229WW - Jul 24, 03:55 UTCJul 24, 04:50 UTC55m
2026-07-22 N229WW - Jul 22, 16:40 UTCJul 22, 17:00 UTC20m
2026-07-21 N229WW - Jul 21, 20:45 UTCJul 21, 20:55 UTC10m
2026-07-21 N229WW - Jul 21, 19:10 UTCJul 21, 20:05 UTC55m
2026-07-21 N229WW - Jul 21, 17:30 UTCJul 21, 18:35 UTC1h 5m
2026-07-20 N229WW - Jul 20, 21:30 UTCJul 20, 21:50 UTC20m
2026-07-20 N229WW - Jul 20, 20:20 UTCJul 20, 20:30 UTC10m
2026-07-20 N229WW - Jul 20, 19:10 UTCJul 20, 19:25 UTC15m
2026-07-19 N229WW - Jul 19, 18:25 UTCJul 19, 18:40 UTC15m
2026-07-19 N229WW - Jul 19, 17:10 UTCJul 19, 17:25 UTC15m
2026-07-18 N229WW - Jul 18, 22:20 UTCJul 18, 22:30 UTC10m
2026-07-17 N229WW - Jul 17, 00:20 UTCJul 17, 00:35 UTC15m
2026-07-16 N229WW - Jul 16, 22:19 UTCJul 16, 22:35 UTC15m
2026-07-16 N229WW - Jul 16, 19:45 UTCJul 16, 20:00 UTC15m
2026-07-13 N229WW - Jul 13, 22:00 UTCJul 13, 22:15 UTC15m
2026-07-13 N229WW - Jul 13, 16:50 UTCJul 13, 17:00 UTC10m
2026-07-12 N229WW - Jul 12, 17:35 UTCJul 12, 17:45 UTC10m
2026-07-11 N229WW - Jul 11, 20:05 UTCJul 11, 20:20 UTC15m
2026-07-11 N229WW - Jul 11, 17:25 UTCJul 11, 17:40 UTC15m
2026-06-24 N229WW - Jun 24, 22:35 UTCJun 24, 22:45 UTC10m
2026-06-24 N229WW - Jun 24, 17:05 UTCJun 24, 17:40 UTC35m
2026-06-23 N229WW - Jun 23, 20:10 UTCJun 23, 20:19 UTC10m
2026-06-23 N229WW - Jun 23, 17:30 UTCJun 23, 17:39 UTC10m
2026-06-22 N229WW - Jun 22, 04:04 UTCJun 22, 05:04 UTC1h 0m
2026-06-22 N229WW - Jun 22, 02:00 UTCJun 22, 02:10 UTC10m
2026-06-21 N229WW - Jun 21, 22:49 UTCJun 21, 23:00 UTC10m
2026-06-21 N229WW - Jun 21, 20:40 UTCJun 21, 20:50 UTC10m
2026-06-20 N229WW - Jun 20, 22:50 UTCJun 20, 23:10 UTC20m
2026-06-19 N229WW - Jun 19, 16:49 UTCJun 19, 17:09 UTC20m
2026-06-19 N229WW - Jun 19, 05:45 UTCJun 19, 06:20 UTC35m
2026-06-19 N229WW - Jun 19, 04:50 UTCJun 19, 05:24 UTC35m
2026-06-18 N229WW - Jun 18, 04:20 UTCJun 18, 04:50 UTC30m
2026-06-16 N229WW - Jun 16, 15:20 UTCJun 16, 15:45 UTC25m
2026-06-15 N229WW - Jun 15, 19:50 UTCJun 15, 20:00 UTC10m
2026-06-15 N229WW - Jun 15, 00:45 UTCJun 15, 00:55 UTC10m
2026-06-14 N229WW - Jun 14, 22:10 UTCJun 14, 22:20 UTC10m
2026-06-13 N229WW - Jun 13, 19:40 UTCJun 13, 19:55 UTC15m
2026-06-13 N229WW - Jun 13, 18:45 UTCJun 13, 19:00 UTC15m
2026-06-12 N229WW - Jun 12, 16:45 UTCJun 12, 17:05 UTC20m
2026-06-07 N229WW - Jun 7, 23:20 UTCJun 7, 23:30 UTC10m
2026-06-07 N229WW - Jun 7, 22:15 UTCJun 7, 22:25 UTC10m
2026-06-06 N229WW - Jun 6, 21:54 UTCJun 6, 22:10 UTC15m
2026-06-05 N229WW - Jun 5, 03:10 UTCJun 5, 04:00 UTC50m
2026-06-04 N229WW - Jun 4, 16:40 UTCJun 4, 16:50 UTC10m
2026-06-03 N229WW - Jun 3, 00:40 UTCJun 3, 00:50 UTC10m

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 N229WW page for operator, model, and routing details .

Mode-S A20479 frequently asked

What is Mode-S code A20479?
A20479 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N229WW.
Where is Mode-S A20479 registered?
Mode-S code A20479 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 A20479 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 05:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A20479, octal 50402171, decimal 10,617,977.
What flights does A20479 operate?
Mode-S A20479 has broadcast 1 distinct callsign, including N229WW.