Apparatus

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sensors Mode-S transponder

A1F73D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2259X · CSA PS-28 Cruiser · operated by N2259X PARTNERS LLC

Hex
A1F73D
Octal
50373475
Decimal
10,614,589
Country
US
Tail
N2259X
Type
CRUZ
Broadcasting now · callsign N2259X · 9,400 ft
Flights observed
49
Distinct callsigns
1
Country
US
Last broadcast
6h ago

Current position

A1F73D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1F73D 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
N2259X - 49 2026-07-14

Recent flights last 49

DateFlightRouteTakeoffLandingDuration
2026-07-14 N2259X - Jul 14, 14:45 UTCJul 14, 15:55 UTC1h 10m
2026-07-14 N2259X - Jul 14, 02:10 UTCJul 14, 03:45 UTC1h 35m
2026-07-13 N2259X - Jul 13, 19:30 UTCJul 13, 21:05 UTC1h 35m
2026-07-13 N2259X - Jul 13, 14:55 UTCJul 13, 16:15 UTC1h 20m
2026-07-11 N2259X - Jul 11, 03:40 UTCJul 11, 08:01 UTC4h 20m
2026-07-10 N2259X - Jul 10, 17:40 UTCJul 10, 18:35 UTC55m
2026-07-10 N2259X - Jul 10, 14:55 UTCJul 10, 15:50 UTC55m
2026-07-10 N2259X - Jul 10, 03:05 UTCJul 10, 04:30 UTC1h 25m
2026-07-09 N2259X SLC → MLD Jul 9, 22:45 UTCJul 10, 00:20 UTC1h 35m
2026-07-09 N2259X - Jul 9, 18:00 UTCJul 9, 19:15 UTC1h 15m
2026-07-09 N2259X - Jul 9, 14:50 UTCJul 9, 15:40 UTC50m
2026-07-07 N2259X - Jul 7, 19:45 UTCJul 7, 20:20 UTC35m
2026-07-07 N2259X - Jul 7, 16:10 UTCJul 7, 16:55 UTC45m
2026-07-06 N2259X - Jul 6, 23:50 UTCJul 7, 01:00 UTC1h 10m
2026-07-06 N2259X - Jul 6, 14:50 UTCJul 6, 15:55 UTC1h 5m
2026-07-01 N2259X - Jul 1, 02:25 UTCJul 1, 03:25 UTC1h 0m
2026-07-01 N2259X - Jul 1, 01:05 UTCJul 1, 02:20 UTC1h 15m
2026-06-30 N2259X - Jun 30, 22:30 UTCJul 1, 00:05 UTC1h 35m
2026-06-30 N2259X - Jun 30, 22:05 UTCJun 30, 22:15 UTC10m
2026-06-30 N2259X - Jun 30, 18:30 UTCJun 30, 19:05 UTC35m
2026-06-30 N2259X - Jun 30, 14:40 UTCJun 30, 15:15 UTC35m
2026-06-30 N2259X - Jun 30, 03:40 UTCJun 30, 06:05 UTC2h 25m
2026-06-29 N2259X - Jun 29, 22:24 UTCJun 30, 00:20 UTC1h 55m
2026-06-28 N2259X OGD → SLC Jun 28, 19:14 UTCJun 28, 20:59 UTC1h 45m
2026-06-28 N2259X - Jun 28, 15:49 UTCJun 28, 18:05 UTC2h 15m
2026-06-26 N2259X - Jun 26, 01:10 UTCJun 26, 02:09 UTC1h 0m
2026-06-25 N2259X - Jun 25, 23:44 UTCJun 26, 00:39 UTC55m
2026-06-25 N2259X - Jun 25, 23:05 UTCJun 25, 23:19 UTC15m
2026-06-24 N2259X - Jun 24, 03:50 UTCJun 24, 04:44 UTC55m
2026-06-24 N2259X - Jun 24, 00:49 UTCJun 24, 02:24 UTC1h 35m
2026-06-23 N2259X - Jun 23, 23:24 UTCJun 24, 00:15 UTC50m
2026-06-23 N2259X - Jun 23, 01:15 UTCJun 23, 02:34 UTC1h 20m
2026-06-22 N2259X - Jun 22, 02:45 UTCJun 22, 04:24 UTC1h 40m
2026-06-20 N2259X BTF → SLC Jun 20, 02:49 UTCJun 20, 04:34 UTC1h 45m
2026-06-18 N2259X - Jun 18, 17:25 UTCJun 18, 18:55 UTC1h 30m
2026-06-18 N2259X - Jun 18, 14:35 UTCJun 18, 14:50 UTC15m
2026-06-17 N2259X - Jun 17, 05:05 UTCJun 17, 06:00 UTC55m
2026-06-11 N2259X - Jun 11, 01:40 UTCJun 11, 02:20 UTC40m
2026-06-10 N2259X - Jun 10, 22:50 UTCJun 10, 23:30 UTC40m
2026-06-06 N2259X - Jun 6, 17:44 UTCJun 6, 18:29 UTC45m
2026-06-06 N2259X - Jun 6, 14:45 UTCJun 6, 15:50 UTC1h 5m
2026-06-05 N2259X - Jun 5, 18:25 UTCJun 5, 19:50 UTC1h 25m
2026-06-05 N2259X - Jun 5, 16:15 UTCJun 5, 16:25 UTC10m
2026-06-05 N2259X - Jun 5, 14:50 UTCJun 5, 15:40 UTC50m
2026-06-03 N2259X - Jun 3, 01:30 UTCJun 3, 03:40 UTC2h 10m
2026-06-03 N2259X - Jun 3, 00:20 UTCJun 3, 00:35 UTC15m
2026-05-19 N2259X - May 19, 16:40 UTCMay 19, 18:15 UTC1h 35m
2026-05-18 N2259X - May 18, 23:30 UTCMay 19, 00:25 UTC55m
2026-05-16 N2259X - May 16, 19:25 UTCMay 16, 20:30 UTC1h 5m

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 N2259X page for operator, model, and routing details .

Mode-S A1F73D frequently asked

What is Mode-S code A1F73D?
A1F73D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2259X.
Where is Mode-S A1F73D registered?
Mode-S code A1F73D 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 A1F73D broadcasting right now?
Yes. Mode-S A1F73D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1F73D, octal 50373475, decimal 10,614,589.
What flights does A1F73D operate?
Mode-S A1F73D has broadcast 1 distinct callsign, including N2259X.