sensors Mode-S transponder

A2F07F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N289MB · operated by MARK BARBER

Hex
A2F07F
Octal
50570177
Decimal
10,678,399
Country
US
Tail
N289MB
No current signal · last broadcast Jul 25, 19:55 UTC
Flights observed
12
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 19:55 UTC

Last known position

Most recent position reported by Mode-S A2F07F.

Country allocation

The ICAO 24-bit address A2F07F 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
N289MB - 12 2026-07-25

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-07-25 N289MB - Jul 25, 19:35 UTCJul 25, 19:55 UTC20m
2026-07-25 N289MB - Jul 25, 05:00 UTCJul 25, 05:55 UTC55m
2026-07-25 N289MB - Jul 25, 04:00 UTCJul 25, 04:30 UTC30m
2026-07-25 N289MB - Jul 25, 02:50 UTCJul 25, 03:00 UTC10m
2026-07-24 N289MB - Jul 24, 23:30 UTCJul 25, 00:30 UTC1h 0m
2026-07-24 N289MB - Jul 24, 19:20 UTCJul 24, 21:15 UTC1h 55m
2026-07-24 N289MB - Jul 24, 17:20 UTCJul 24, 18:35 UTC1h 15m
2026-06-25 N289MB - Jun 25, 17:05 UTCJun 25, 18:59 UTC1h 55m
2026-06-11 N289MB - Jun 11, 21:50 UTCJun 11, 22:05 UTC15m
2026-06-11 N289MB - Jun 11, 20:30 UTCJun 11, 21:15 UTC45m
2026-05-25 N289MB - May 25, 15:20 UTCMay 25, 16:20 UTC1h 0m
2026-05-23 N289MB - May 23, 17:50 UTCMay 23, 18:45 UTC55m

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 N289MB page for operator, model, and routing details .

Mode-S A2F07F frequently asked

What is Mode-S code A2F07F?
A2F07F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N289MB.
Where is Mode-S A2F07F registered?
Mode-S code A2F07F 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 A2F07F broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 19:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2F07F, octal 50570177, decimal 10,678,399.
What flights does A2F07F operate?
Mode-S A2F07F has broadcast 1 distinct callsign, including N289MB.