Apparatus

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sensors Mode-S transponder

A2F5B8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N290CM · BOEING 767-300 · operated by CARGO AIRCRAFT MANAGEMENT INC

Hex
A2F5B8
Octal
50572670
Decimal
10,679,736
Country
US
Tail
N290CM
Type
B763
Broadcasting now · callsign ABX445 · 37,000 ft
Flights observed
3
Distinct callsigns
3
Country
US
Last broadcast
17h ago

Current position

A2F5B8 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2F5B8 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 3 distinct

Callsign Airline Flights Last seen
ABX845 ABX Air 1 2026-04-14
ABX797 ABX Air 1 2026-04-13
ABX397 - 1 2026-04-14

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-14 ABX845 CVG → SJU Apr 14, 10:50 UTCApr 14, 11:05 UTC15m
2026-04-14 ABX397 - Apr 14, 05:15 UTCApr 14, 05:45 UTC30m
2026-04-13 ABX797 CVG → MSP Apr 13, 09:15 UTCApr 13, 10:05 UTC50m

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 N290CM page for operator, model, and routing details .

Mode-S A2F5B8 frequently asked

What is Mode-S code A2F5B8?
A2F5B8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N290CM.
Where is Mode-S A2F5B8 registered?
Mode-S code A2F5B8 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 A2F5B8 broadcasting right now?
Yes. Mode-S A2F5B8 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2F5B8, octal 50572670, decimal 10,679,736.
What flights does A2F5B8 operate?
Mode-S A2F5B8 has broadcast 3 distinct callsigns, including ABX845, ABX797, ABX397.