Apparatus

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sensors Mode-S transponder

A2DDEB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N284MA · operated by ROBERT WATZLAVICK

Hex
A2DDEB
Octal
50556753
Decimal
10,673,643
Country
US
Tail
N284MA
No current signal · last broadcast Jul 26, 15:10 UTC
Flights observed
55
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 15:10 UTC

Last known position

Most recent position reported by Mode-S A2DDEB.

Country allocation

The ICAO 24-bit address A2DDEB 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
N284MA - 55 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N284MA - Jul 26, 14:05 UTCJul 26, 15:10 UTC1h 5m
2026-07-18 N284MA - Jul 18, 18:05 UTCJul 18, 18:35 UTC30m
2026-07-18 N284MA - Jul 18, 15:40 UTCJul 18, 16:10 UTC30m
2026-07-12 N284MA - Jul 12, 13:10 UTCJul 12, 14:55 UTC1h 45m
2026-07-11 N284MA - Jul 11, 17:40 UTCJul 11, 17:55 UTC15m
2026-07-11 N284MA - Jul 11, 15:00 UTCJul 11, 15:15 UTC15m
2026-07-05 N284MA - Jul 5, 17:00 UTCJul 5, 17:50 UTC50m
2026-07-05 N284MA - Jul 5, 14:55 UTCJul 5, 15:15 UTC20m
2026-07-04 N284MA - Jul 4, 15:10 UTCJul 4, 15:30 UTC20m
2026-07-03 N284MA - Jul 3, 15:50 UTCJul 3, 16:30 UTC40m
2026-06-27 N284MA - Jun 27, 16:30 UTCJun 27, 17:25 UTC55m
2026-06-27 N284MA - Jun 27, 14:14 UTCJun 27, 15:00 UTC45m
2026-06-21 N284MA - Jun 21, 23:40 UTCJun 22, 00:24 UTC45m
2026-06-14 N284MA - Jun 14, 01:40 UTCJun 14, 02:10 UTC30m
2026-06-13 N284MA - Jun 13, 22:50 UTCJun 13, 23:10 UTC20m
2026-06-13 N284MA - Jun 13, 18:15 UTCJun 13, 18:55 UTC40m
2026-06-10 N284MA - Jun 10, 00:55 UTCJun 10, 01:45 UTC50m
2026-06-07 N284MA - Jun 7, 23:00 UTCJun 7, 23:15 UTC15m
2026-06-06 N284MA - Jun 6, 18:39 UTCJun 6, 18:55 UTC15m
2026-06-06 N284MA - Jun 6, 16:04 UTCJun 6, 16:14 UTC10m
2026-05-30 N284MA - May 30, 22:20 UTCMay 30, 23:35 UTC1h 15m
2026-05-30 N284MA - May 30, 14:30 UTCMay 30, 15:50 UTC1h 20m
2026-05-25 N284MA - May 25, 16:50 UTCMay 25, 17:35 UTC45m
2026-05-25 N284MA - May 25, 13:35 UTCMay 25, 14:25 UTC50m
2026-05-23 N284MA - May 23, 18:00 UTCMay 23, 18:20 UTC20m
2026-05-23 N284MA - May 23, 16:05 UTCMay 23, 16:25 UTC20m
2026-05-22 N284MA - May 22, 21:10 UTCMay 22, 22:25 UTC1h 15m
2026-05-22 N284MA - May 22, 17:20 UTCMay 22, 18:35 UTC1h 15m
2026-05-21 N284MA - May 21, 00:50 UTCMay 21, 01:40 UTC50m
2026-05-16 N284MA - May 16, 18:50 UTCMay 16, 19:05 UTC15m
2026-05-16 N284MA - May 16, 16:45 UTCMay 16, 17:10 UTC25m
2026-05-16 N284MA - May 16, 14:46 UTCMay 16, 15:05 UTC20m
2026-05-14 N284MA - May 14, 00:30 UTCMay 14, 01:30 UTC1h 0m
2026-05-12 N284MA - May 12, 02:45 UTCMay 12, 02:55 UTC10m
2026-05-09 N284MA - May 9, 17:45 UTCMay 9, 18:50 UTC1h 5m
2026-05-09 N284MA - May 9, 15:25 UTCMay 9, 16:20 UTC55m
2026-05-08 N284MA - May 8, 22:10 UTCMay 8, 22:50 UTC40m
2026-05-07 N284MA - May 7, 22:25 UTCMay 7, 23:39 UTC1h 14m
2026-05-04 N284MA - May 4, 00:15 UTCMay 4, 01:35 UTC1h 20m
2026-05-03 N284MA - May 3, 14:30 UTCMay 3, 15:50 UTC1h 20m
2026-05-03 N284MA - May 3, 00:35 UTCMay 3, 01:20 UTC45m
2026-05-02 N284MA - May 2, 17:45 UTCMay 2, 18:30 UTC45m
2026-05-02 N284MA - May 2, 14:25 UTCMay 2, 15:30 UTC1h 5m
2026-04-26 N284MA - Apr 26, 20:55 UTCApr 26, 22:35 UTC1h 40m
2026-04-25 N284MA - Apr 25, 19:50 UTCApr 25, 20:15 UTC25m
2026-04-25 N284MA - Apr 25, 17:35 UTCApr 25, 18:05 UTC30m
2026-04-24 N284MA - Apr 24, 20:15 UTCApr 24, 22:05 UTC1h 50m
2026-04-23 N284MA - Apr 23, 00:35 UTCApr 23, 01:15 UTC40m
2026-04-21 N284MA - Apr 21, 00:05 UTCApr 21, 01:05 UTC1h 0m
2026-04-19 N284MA - Apr 19, 22:30 UTCApr 19, 23:15 UTC45m

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 N284MA page for operator, model, and routing details .

Mode-S A2DDEB frequently asked

What is Mode-S code A2DDEB?
A2DDEB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N284MA.
Where is Mode-S A2DDEB registered?
Mode-S code A2DDEB 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 A2DDEB broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2DDEB, octal 50556753, decimal 10,673,643.
What flights does A2DDEB operate?
Mode-S A2DDEB has broadcast 1 distinct callsign, including N284MA.