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sensors Mode-S transponder

AB23E1

ICAO 24-bit transponder address · allocated to United States

Hex
AB23E1
Octal
52621741
Decimal
11,215,841
Country
US
No current signal · last broadcast 20m ago
Flights observed
279
Distinct callsigns
1
Country
US
Last broadcast
20m ago

Last known position

Most recent position reported by Mode-S AB23E1.

Country allocation

The ICAO 24-bit address AB23E1 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
N817FG - 279 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 N817FG - Jul 23, 21:50 UTCJul 23, 22:15 UTC25m
2026-07-23 N817FG - Jul 23, 19:30 UTCJul 23, 21:05 UTC1h 35m
2026-07-23 N817FG - Jul 23, 17:05 UTCJul 23, 18:35 UTC1h 30m
2026-07-23 N817FG TTN → TTN Jul 23, 13:50 UTCJul 23, 15:50 UTC2h 0m
2026-07-23 N817FG - Jul 23, 11:05 UTCJul 23, 12:25 UTC1h 20m
2026-07-23 N817FG - Jul 23, 00:20 UTCJul 23, 01:45 UTC1h 25m
2026-07-22 N817FG - Jul 22, 18:30 UTCJul 22, 19:00 UTC30m
2026-07-22 N817FG - Jul 22, 15:50 UTCJul 22, 17:15 UTC1h 25m
2026-07-22 N817FG - Jul 22, 11:55 UTCJul 22, 12:25 UTC30m
2026-07-20 N817FG - Jul 20, 22:00 UTCJul 20, 23:35 UTC1h 35m
2026-07-20 N817FG - Jul 20, 16:55 UTCJul 20, 17:30 UTC35m
2026-07-20 N817FG - Jul 20, 14:10 UTCJul 20, 14:45 UTC35m
2026-07-19 N817FG MJX → TTN Jul 19, 16:05 UTCJul 19, 17:25 UTC1h 20m
2026-07-19 N817FG - Jul 19, 13:40 UTCJul 19, 14:50 UTC1h 10m
2026-07-18 N817FG MJX → TTN Jul 18, 21:25 UTCJul 18, 22:00 UTC35m
2026-07-18 N817FG MJX → MJX Jul 18, 18:35 UTCJul 18, 19:40 UTC1h 5m
2026-07-18 N817FG - Jul 18, 15:10 UTCJul 18, 16:40 UTC1h 30m
2026-07-18 N817FG TTN → MJX Jul 18, 13:10 UTCJul 18, 13:45 UTC35m
2026-07-17 N817FG - Jul 17, 20:15 UTCJul 17, 20:50 UTC35m
2026-07-17 N817FG - Jul 17, 18:34 UTCJul 17, 19:20 UTC45m
2026-07-17 N817FG - Jul 17, 14:24 UTCJul 17, 16:55 UTC2h 30m
2026-07-17 N817FG - Jul 17, 13:25 UTCJul 17, 14:10 UTC45m
2026-07-16 N817FG LNS → TTN Jul 16, 20:39 UTCJul 16, 21:30 UTC50m
2026-07-16 N817FG - Jul 16, 18:19 UTCJul 16, 19:10 UTC50m
2026-07-16 N817FG - Jul 16, 03:50 UTCJul 16, 05:15 UTC1h 25m
2026-07-16 N817FG - Jul 16, 02:10 UTCJul 16, 03:40 UTC1h 30m
2026-07-15 N817FG - Jul 15, 20:35 UTCJul 15, 21:20 UTC45m
2026-07-15 N817FG - Jul 15, 19:30 UTCJul 15, 20:25 UTC55m
2026-07-15 N817FG - Jul 15, 17:05 UTCJul 15, 17:25 UTC20m
2026-07-15 N817FG - Jul 15, 15:45 UTCJul 15, 17:00 UTC1h 15m
2026-07-15 N817FG - Jul 15, 13:10 UTCJul 15, 13:55 UTC45m
2026-07-15 N817FG - Jul 15, 11:15 UTCJul 15, 12:10 UTC55m
2026-07-15 N817FG - Jul 15, 00:20 UTCJul 15, 01:40 UTC1h 20m
2026-07-14 N817FG - Jul 14, 22:30 UTCJul 14, 23:20 UTC49m
2026-07-14 N817FG - Jul 14, 20:35 UTCJul 14, 21:35 UTC1h 0m
2026-07-14 N817FG - Jul 14, 17:55 UTCJul 14, 18:55 UTC1h 0m
2026-07-14 N817FG - Jul 14, 16:15 UTCJul 14, 16:40 UTC25m
2026-07-14 N817FG - Jul 14, 14:20 UTCJul 14, 14:40 UTC20m
2026-07-14 N817FG - Jul 14, 13:20 UTCJul 14, 14:10 UTC50m
2026-07-14 N817FG - Jul 14, 10:25 UTCJul 14, 11:20 UTC55m
2026-07-14 N817FG - Jul 14, 02:10 UTCJul 14, 02:25 UTC15m
2026-07-14 N817FG - Jul 14, 01:45 UTCJul 14, 02:00 UTC15m
2026-07-14 N817FG - Jul 14, 00:40 UTCJul 14, 01:30 UTC50m
2026-07-13 N817FG - Jul 13, 19:25 UTCJul 13, 20:55 UTC1h 30m
2026-07-13 N817FG - Jul 13, 17:15 UTCJul 13, 18:20 UTC1h 5m
2026-07-13 N817FG - Jul 13, 12:05 UTCJul 13, 14:35 UTC2h 30m
2026-07-12 N817FG - Jul 12, 22:40 UTCJul 12, 23:10 UTC30m
2026-07-12 N817FG - Jul 12, 16:20 UTCJul 12, 17:35 UTC1h 15m
2026-07-12 N817FG - Jul 12, 13:20 UTCJul 12, 14:50 UTC1h 30m
2026-07-12 N817FG - Jul 12, 01:50 UTCJul 12, 04:01 UTC2h 10m

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.

Mode-S AB23E1 frequently asked

What is Mode-S code AB23E1?
AB23E1 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S AB23E1 registered?
Mode-S code AB23E1 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 AB23E1 broadcasting right now?
No active broadcast right now. Last signal was 20m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB23E1, octal 52621741, decimal 11,215,841.
What flights does AB23E1 operate?
Mode-S AB23E1 has broadcast 1 distinct callsign, including N817FG.