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sensors Mode-S transponder

AB4027

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N824EM · operated by ANGLE OF INCIDENCE LLC

Hex
AB4027
Octal
52640047
Decimal
11,223,079
Country
US
Tail
N824EM
Type
CC11
No current signal · last broadcast 13d ago
Flights observed
90
Distinct callsigns
1
Country
US
Last broadcast
13d ago

Last known position

Most recent position reported by Mode-S AB4027.

Country allocation

The ICAO 24-bit address AB4027 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
N824EM - 90 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N824EM - Jul 25, 12:05 UTCJul 25, 15:00 UTC2h 55m
2026-07-25 N824EM OSH → OSH Jul 25, 01:15 UTCJul 25, 01:50 UTC35m
2026-07-24 N824EM OSH → OSH Jul 24, 01:10 UTCJul 24, 01:50 UTC40m
2026-07-22 N824EM OSH → OSH Jul 22, 01:15 UTCJul 22, 01:50 UTC35m
2026-07-19 N824EM - Jul 19, 22:10 UTCJul 19, 22:35 UTC25m
2026-07-19 N824EM - Jul 19, 20:40 UTCJul 19, 20:50 UTC10m
2026-07-19 N824EM - Jul 19, 00:20 UTCJul 19, 00:40 UTC20m
2026-07-18 N824EM - Jul 18, 23:05 UTCJul 18, 23:20 UTC15m
2026-07-18 N824EM - Jul 18, 21:55 UTCJul 18, 22:25 UTC30m
2026-07-17 N824EM - Jul 17, 00:04 UTCJul 17, 00:25 UTC20m
2026-07-16 N824EM - Jul 16, 18:50 UTCJul 16, 22:05 UTC3h 15m
2026-07-16 N824EM - Jul 16, 15:25 UTCJul 16, 16:35 UTC1h 10m
2026-07-12 N824EM - Jul 12, 20:01 UTCJul 12, 20:45 UTC45m
2026-07-11 N824EM - Jul 11, 16:40 UTCJul 11, 17:45 UTC1h 5m
2026-07-06 N824EM - Jul 6, 04:50 UTCJul 6, 05:00 UTC10m
2026-07-06 N824EM - Jul 6, 04:20 UTCJul 6, 04:45 UTC25m
2026-07-06 N824EM - Jul 6, 01:55 UTCJul 6, 02:15 UTC20m
2026-07-06 N824EM - Jul 6, 01:40 UTCJul 6, 01:50 UTC10m
2026-07-06 N824EM - Jul 6, 01:25 UTCJul 6, 01:35 UTC10m
2026-07-05 N824EM - Jul 5, 19:45 UTCJul 5, 20:25 UTC40m
2026-07-05 N824EM - Jul 5, 19:10 UTCJul 5, 19:20 UTC10m
2026-07-05 N824EM - Jul 5, 04:40 UTCJul 5, 04:50 UTC10m
2026-07-05 N824EM - Jul 5, 04:20 UTCJul 5, 04:30 UTC10m
2026-07-05 N824EM - Jul 5, 04:05 UTCJul 5, 04:10 UTC5m
2026-07-05 N824EM - Jul 5, 03:50 UTCJul 5, 04:00 UTC10m
2026-07-05 N824EM - Jul 5, 02:20 UTCJul 5, 02:45 UTC25m
2026-07-05 N824EM - Jul 5, 01:15 UTCJul 5, 02:05 UTC50m
2026-07-05 N824EM - Jul 5, 00:20 UTCJul 5, 01:05 UTC45m
2026-07-04 N824EM - Jul 4, 22:50 UTCJul 4, 23:25 UTC35m
2026-07-04 N824EM - Jul 4, 22:30 UTCJul 4, 22:45 UTC15m
2026-07-03 N824EM - Jul 3, 21:55 UTCJul 3, 22:10 UTC15m
2026-07-03 N824EM - Jul 3, 20:50 UTCJul 3, 21:50 UTC1h 0m
2026-07-02 N824EM - Jul 2, 23:25 UTCJul 2, 23:35 UTC10m
2026-07-02 N824EM - Jul 2, 23:05 UTCJul 2, 23:15 UTC10m
2026-07-02 N824EM - Jul 2, 22:50 UTCJul 2, 23:00 UTC10m
2026-06-28 N824EM - Jun 28, 23:39 UTCJun 29, 00:20 UTC40m
2026-06-28 N824EM - Jun 28, 21:30 UTCJun 28, 22:20 UTC50m
2026-06-28 N824EM - Jun 28, 04:35 UTCJun 28, 04:59 UTC25m
2026-06-28 N824EM - Jun 28, 02:05 UTCJun 28, 02:44 UTC40m
2026-06-26 N824EM - Jun 26, 20:04 UTCJun 26, 20:40 UTC35m
2026-06-26 N824EM - Jun 26, 01:34 UTCJun 26, 02:00 UTC25m
2026-06-24 N824EM - Jun 24, 20:09 UTCJun 24, 21:40 UTC1h 30m
2026-06-22 N824EM - Jun 22, 01:15 UTCJun 22, 02:10 UTC55m
2026-06-21 N824EM - Jun 21, 17:29 UTCJun 21, 18:54 UTC1h 25m
2026-06-20 N824EM - Jun 20, 19:49 UTCJun 20, 20:20 UTC30m
2026-06-19 N824EM - Jun 19, 04:25 UTCJun 19, 05:00 UTC35m
2026-06-13 N824EM - Jun 13, 03:45 UTCJun 13, 04:10 UTC25m
2026-06-13 N824EM - Jun 13, 02:25 UTCJun 13, 02:50 UTC25m
2026-06-07 N824EM - Jun 7, 06:45 UTCJun 7, 07:45 UTC1h 0m
2026-06-07 N824EM - Jun 7, 03:00 UTCJun 7, 04:15 UTC1h 15m

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 N824EM page for operator, model, and routing details .

Mode-S AB4027 frequently asked

What is Mode-S code AB4027?
AB4027 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N824EM.
Where is Mode-S AB4027 registered?
Mode-S code AB4027 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 AB4027 broadcasting right now?
No active broadcast right now. Last signal was 13d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB4027, octal 52640047, decimal 11,223,079.
What flights does AB4027 operate?
Mode-S AB4027 has broadcast 1 distinct callsign, including N824EM.