Apparatus

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sensors Mode-S transponder

A2DDEF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N284ME · CESSNA 172 Skyhawk · operated by PATRIOT LEASING LLC

Hex
A2DDEF
Octal
50556757
Decimal
10,673,647
Country
US
Tail
N284ME
Type
C172
No current signal · last broadcast Jul 20, 15:50 UTC
Flights observed
200
Distinct callsigns
1
Country
US
Last broadcast
Jul 20, 15:50 UTC

Last known position

Most recent position reported by Mode-S A2DDEF.

Country allocation

The ICAO 24-bit address A2DDEF 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
N284ME - 200 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 N284ME MQY → MQY Jul 20, 14:35 UTCJul 20, 15:50 UTC1h 15m
2026-07-19 N284ME - Jul 19, 15:25 UTCJul 19, 16:45 UTC1h 20m
2026-07-19 N284ME - Jul 19, 13:40 UTCJul 19, 14:50 UTC1h 10m
2026-07-18 N284ME - Jul 18, 20:20 UTCJul 18, 21:45 UTC1h 25m
2026-07-18 N284ME - Jul 18, 16:50 UTCJul 18, 17:40 UTC50m
2026-07-18 N284ME - Jul 18, 15:45 UTCJul 18, 16:15 UTC30m
2026-07-18 N284ME MQY → MQY Jul 18, 02:05 UTCJul 18, 03:10 UTC1h 6m
2026-07-17 N284ME - Jul 17, 15:35 UTCJul 17, 16:55 UTC1h 20m
2026-07-17 N284ME MQY → MQY Jul 17, 13:15 UTCJul 17, 14:44 UTC1h 30m
2026-07-16 N284ME - Jul 16, 15:35 UTCJul 16, 15:49 UTC15m
2026-07-16 N284ME - Jul 16, 03:25 UTCJul 16, 03:55 UTC30m
2026-07-16 N284ME - Jul 16, 02:10 UTCJul 16, 02:50 UTC40m
2026-07-15 N284ME - Jul 15, 16:05 UTCJul 15, 16:35 UTC30m
2026-07-15 N284ME MQY → MQY Jul 15, 13:50 UTCJul 15, 14:45 UTC55m
2026-07-14 N284ME - Jul 14, 21:30 UTCJul 14, 23:00 UTC1h 29m
2026-07-14 N284ME - Jul 14, 16:05 UTCJul 14, 17:35 UTC1h 30m
2026-07-14 N284ME MQY → MQY Jul 14, 14:00 UTCJul 14, 14:40 UTC40m
2026-07-13 N284ME MQY → MQY Jul 13, 22:10 UTCJul 14, 00:00 UTC1h 50m
2026-07-13 N284ME - Jul 13, 18:20 UTCJul 13, 20:15 UTC1h 55m
2026-07-12 N284ME - Jul 12, 01:20 UTCJul 12, 03:15 UTC1h 55m
2026-07-10 N284ME - Jul 10, 17:30 UTCJul 10, 19:10 UTC1h 40m
2026-07-09 N284ME - Jul 9, 22:35 UTCJul 9, 23:45 UTC1h 10m
2026-07-09 N284ME - Jul 9, 20:00 UTCJul 9, 20:10 UTC10m
2026-07-09 N284ME - Jul 9, 16:40 UTCJul 9, 17:15 UTC35m
2026-07-09 N284ME - Jul 9, 15:45 UTCJul 9, 16:05 UTC20m
2026-07-08 N284ME - Jul 8, 20:35 UTCJul 8, 21:35 UTC1h 0m
2026-07-08 N284ME - Jul 8, 18:35 UTCJul 8, 18:45 UTC10m
2026-07-08 N284ME - Jul 8, 16:45 UTCJul 8, 17:10 UTC25m
2026-07-08 N284ME - Jul 8, 14:50 UTCJul 8, 15:55 UTC1h 5m
2026-07-08 N284ME MQY → LOU Jul 8, 11:20 UTCJul 8, 12:45 UTC1h 25m
2026-07-08 N284ME - Jul 8, 01:40 UTCJul 8, 02:50 UTC1h 10m
2026-07-07 N284ME - Jul 7, 21:35 UTCJul 7, 23:05 UTC1h 30m
2026-07-07 N284ME - Jul 7, 14:15 UTCJul 7, 14:25 UTC10m
2026-07-07 N284ME - Jul 7, 13:30 UTCJul 7, 13:40 UTC10m
2026-07-06 N284ME - Jul 6, 18:35 UTCJul 6, 18:55 UTC20m
2026-07-06 N284ME - Jul 6, 17:30 UTCJul 6, 18:00 UTC30m
2026-07-06 N284ME - Jul 6, 16:00 UTCJul 6, 16:25 UTC25m
2026-07-06 N284ME - Jul 6, 14:00 UTCJul 6, 15:05 UTC1h 5m
2026-07-03 N284ME - Jul 3, 14:10 UTCJul 3, 14:20 UTC10m
2026-06-30 N284ME - Jun 30, 19:15 UTCJun 30, 20:50 UTC1h 35m
2026-06-30 N284ME - Jun 30, 16:25 UTCJun 30, 18:25 UTC2h 0m
2026-06-30 N284ME - Jun 30, 15:10 UTCJun 30, 15:25 UTC15m
2026-06-30 N284ME - Jun 30, 13:55 UTCJun 30, 14:05 UTC10m
2026-06-29 N284ME - Jun 29, 22:10 UTCJun 29, 23:29 UTC1h 20m
2026-06-29 N284ME - Jun 29, 16:35 UTCJun 29, 16:59 UTC25m
2026-06-29 N284ME - Jun 29, 15:14 UTCJun 29, 15:30 UTC15m
2026-06-28 N284ME - Jun 28, 19:29 UTCJun 28, 20:29 UTC1h 0m
2026-06-28 N284ME - Jun 28, 16:09 UTCJun 28, 17:44 UTC1h 35m
2026-06-26 N284ME - Jun 26, 17:09 UTCJun 26, 17:25 UTC15m
2026-06-26 N284ME - Jun 26, 15:25 UTCJun 26, 15:39 UTC15m

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 N284ME page for operator, model, and routing details .

Mode-S A2DDEF frequently asked

What is Mode-S code A2DDEF?
A2DDEF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N284ME.
Where is Mode-S A2DDEF registered?
Mode-S code A2DDEF 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 A2DDEF broadcasting right now?
No active broadcast right now. Last signal was Jul 20, 15:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2DDEF, octal 50556757, decimal 10,673,647.
What flights does A2DDEF operate?
Mode-S A2DDEF has broadcast 1 distinct callsign, including N284ME.