Apparatus

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sensors Mode-S transponder

AB2B45

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N819EX · DASSAULT Falcon 50 · operated by PRESERVE AIR LLC

Hex
AB2B45
Octal
52625505
Decimal
11,217,733
Country
US
Tail
N819EX
Type
FA50
No current signal · last broadcast Jul 19, 20:35 UTC
Flights observed
57
Distinct callsigns
1
Country
US
Last broadcast
Jul 19, 20:35 UTC

Last known position

Most recent position reported by Mode-S AB2B45.

Country allocation

The ICAO 24-bit address AB2B45 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
FGR819 - 57 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 FGR819 - Jul 19, 20:25 UTCJul 19, 20:35 UTC10m
2026-07-15 FGR819 - Jul 15, 05:25 UTCJul 15, 05:55 UTC30m
2026-07-15 FGR819 - Jul 15, 03:45 UTCJul 15, 04:05 UTC20m
2026-07-14 FGR819 - Jul 14, 22:25 UTCJul 14, 22:50 UTC24m
2026-07-13 FGR819 - Jul 13, 20:50 UTCJul 13, 21:00 UTC10m
2026-07-12 FGR819 - Jul 12, 01:10 UTCJul 12, 01:30 UTC20m
2026-07-11 FGR819 - Jul 11, 19:30 UTCJul 11, 19:50 UTC20m
2026-07-09 FGR819 - Jul 9, 03:55 UTCJul 9, 04:30 UTC35m
2026-07-09 FGR819 - Jul 9, 02:55 UTCJul 9, 03:25 UTC30m
2026-07-08 FGR819 KOA → HNL Jul 8, 01:10 UTCJul 8, 01:40 UTC30m
2026-07-07 FGR819 - Jul 7, 18:25 UTCJul 7, 18:55 UTC30m
2026-07-05 FGR819 KOA → HNL Jul 5, 01:05 UTCJul 5, 01:40 UTC35m
2026-07-05 FGR819 - Jul 5, 00:00 UTCJul 5, 00:30 UTC30m
2026-06-29 FGR819 - Jun 29, 18:39 UTCJun 29, 19:09 UTC30m
2026-06-29 FGR819 - Jun 29, 17:14 UTCJun 29, 17:45 UTC30m
2026-06-26 FGR819 - Jun 26, 22:05 UTCJun 26, 22:14 UTC10m
2026-06-23 FGR819 KOA → HNL Jun 23, 21:34 UTCJun 23, 22:05 UTC30m
2026-06-23 FGR819 - Jun 23, 20:29 UTCJun 23, 20:59 UTC30m
2026-06-23 FGR819 - Jun 23, 18:14 UTCJun 23, 18:29 UTC15m
2026-06-22 FGR819 - Jun 22, 22:24 UTCJun 22, 22:49 UTC25m
2026-06-22 FGR819 - Jun 22, 21:30 UTCJun 22, 21:54 UTC25m
2026-06-22 FGR819 - Jun 22, 01:00 UTCJun 22, 01:10 UTC10m
2026-06-21 FGR819 - Jun 21, 23:24 UTCJun 21, 23:55 UTC30m
2026-06-21 FGR819 - Jun 21, 21:14 UTCJun 21, 21:44 UTC30m
2026-06-19 FGR819 - Jun 19, 09:34 UTCJun 19, 09:55 UTC20m
2026-06-18 FGR819 - Jun 18, 23:50 UTCJun 19, 00:20 UTC29m
2026-06-18 FGR819 - Jun 18, 21:45 UTCJun 18, 22:20 UTC35m
2026-06-18 FGR819 - Jun 18, 20:50 UTCJun 18, 21:20 UTC30m
2026-06-17 FGR819 - Jun 17, 22:55 UTCJun 17, 23:05 UTC10m
2026-06-15 FGR819 KOA → HNL Jun 15, 19:39 UTCJun 15, 20:15 UTC35m
2026-06-15 FGR819 - Jun 15, 18:15 UTCJun 15, 18:45 UTC30m
2026-06-14 FGR819 - Jun 14, 21:05 UTCJun 15, 02:35 UTC5h 29m
2026-06-13 FGR819 - Jun 13, 11:40 UTCJun 13, 12:00 UTC20m
2026-06-13 FGR819 - Jun 13, 01:55 UTCJun 13, 02:25 UTC30m
2026-06-11 FGR819 - Jun 11, 22:00 UTCJun 11, 22:15 UTC15m
2026-06-11 FGR819 - Jun 11, 20:20 UTCJun 11, 20:45 UTC25m
2026-06-11 FGR819 - Jun 11, 08:25 UTCJun 11, 08:55 UTC30m
2026-06-11 FGR819 - Jun 11, 07:35 UTCJun 11, 08:00 UTC25m
2026-06-11 FGR819 - Jun 11, 05:40 UTCJun 11, 06:30 UTC50m
2026-06-08 FGR819 - Jun 8, 00:30 UTCJun 8, 01:10 UTC40m
2026-05-24 FGR819 - May 24, 00:30 UTCMay 24, 00:35 UTC5m
2026-05-23 FGR819 - May 23, 11:15 UTCMay 23, 11:30 UTC15m
2026-05-23 FGR819 - May 23, 06:15 UTCMay 23, 06:55 UTC40m
2026-05-23 FGR819 - May 23, 00:20 UTCMay 23, 00:35 UTC15m
2026-05-21 FGR819 HNL → SNA May 21, 19:25 UTCMay 22, 00:30 UTC5h 5m
2026-05-13 FGR819 - May 13, 02:55 UTCMay 13, 03:15 UTC20m
2026-05-11 FGR819 - May 11, 20:30 UTCMay 11, 20:55 UTC25m
2026-05-08 FGR819 HNL → HNL May 8, 20:15 UTCMay 9, 02:25 UTC6h 10m
2026-05-06 FGR819 - May 6, 04:20 UTCMay 6, 04:40 UTC20m
2026-05-06 FGR819 - May 6, 03:35 UTCMay 6, 03:50 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 N819EX page for operator, model, and routing details .

Mode-S AB2B45 frequently asked

What is Mode-S code AB2B45?
AB2B45 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N819EX.
Where is Mode-S AB2B45 registered?
Mode-S code AB2B45 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 AB2B45 broadcasting right now?
No active broadcast right now. Last signal was Jul 19, 20:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB2B45, octal 52625505, decimal 11,217,733.
What flights does AB2B45 operate?
Mode-S AB2B45 has broadcast 1 distinct callsign, including FGR819.