Apparatus

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sensors Mode-S transponder

AB3872

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N822BR · operated by EVA FLIGHT TRAINING ACADEMY

Hex
AB3872
Octal
52634162
Decimal
11,221,106
Country
US
Tail
N822BR
No current signal · last broadcast 1d ago
Flights observed
21
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AB3872.

Country allocation

The ICAO 24-bit address AB3872 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 2 distinct

Callsign Airline Flights Last seen
ES822 Aerolíneas Estelar 17 2026-06-19
N822BR - 4 2026-05-30

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-06-19 ES822 PZO → CCS Jun 19, 18:39 UTCJun 19, 20:04 UTC1h 25m
2026-06-13 ES822 PZO → CCS Jun 13, 15:25 UTCJun 13, 16:50 UTC1h 25m
2026-06-09 ES822 PZO → CCS Jun 9, 19:00 UTCJun 9, 20:00 UTC1h 0m
2026-06-06 ES822 PZO → CCS Jun 6, 15:39 UTCJun 6, 16:55 UTC1h 15m
2026-06-05 ES822 PZO → CCS Jun 5, 16:15 UTCJun 5, 17:30 UTC1h 15m
2026-06-03 ES822 PZO → CCS Jun 3, 19:45 UTCJun 3, 20:55 UTC1h 10m
2026-05-30 N822BR MHR → MHR May 30, 22:45 UTCMay 31, 00:10 UTC1h 25m
2026-05-29 ES822 PZO → CCS May 29, 04:00 UTCMay 29, 05:45 UTC1h 45m
2026-05-21 ES822 PZO → CCS May 21, 17:15 UTCMay 21, 18:30 UTC1h 15m
2026-05-20 ES822 PZO → CCS May 20, 00:20 UTCMay 20, 01:30 UTC1h 10m
2026-05-16 ES822 PZO → CCS May 16, 21:45 UTCMay 16, 23:05 UTC1h 20m
2026-05-15 ES822 PZO → CCS May 15, 18:00 UTCMay 15, 19:20 UTC1h 20m
2026-05-10 ES822 PZO → CCS May 10, 20:30 UTCMay 10, 21:49 UTC1h 20m
2026-05-07 ES822 PZO → CCS May 7, 21:55 UTCMay 7, 23:09 UTC1h 14m
2026-05-07 ES822 PZO → CCS May 7, 19:40 UTCMay 7, 19:45 UTC5m
2026-05-07 ES822 PZO → CCS May 7, 18:25 UTCMay 7, 19:30 UTC1h 5m
2026-05-06 ES822 PZO → CCS May 6, 03:40 UTCMay 6, 04:45 UTC1h 5m
2026-04-29 N822BR MHR → MHR Apr 29, 04:10 UTCApr 29, 04:34 UTC25m
2026-04-19 N822BR - Apr 19, 21:00 UTCApr 19, 22:40 UTC1h 40m
2026-04-19 N822BR MHR → SBP Apr 19, 16:10 UTCApr 19, 18:25 UTC2h 15m
2026-04-17 ES822 - Apr 17, 22:00 UTCApr 17, 23:20 UTC1h 20m

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 N822BR page for operator, model, and routing details .

Mode-S AB3872 frequently asked

What is Mode-S code AB3872?
AB3872 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N822BR.
Where is Mode-S AB3872 registered?
Mode-S code AB3872 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 AB3872 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 AB3872, octal 52634162, decimal 11,221,106.
What flights does AB3872 operate?
Mode-S AB3872 has broadcast 2 distinct callsigns, including ES822, N822BR.