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sensors Mode-S transponder

A82181

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N623BF · AIR TRACTOR AT-802 · operated by HIGGINS LEASING INC

Hex
A82181
Octal
52020601
Decimal
11,018,625
Country
US
Tail
N623BF
Type
AT8T
No current signal · last broadcast 27d ago
Flights observed
21
Distinct callsigns
1
Country
US
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S A82181.

Country allocation

The ICAO 24-bit address A82181 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
N623BF - 21 2026-07-26

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-07-26 N623BF - Jul 26, 12:40 UTCJul 26, 15:55 UTC3h 15m
2026-07-25 N623BF - Jul 25, 20:00 UTCJul 25, 20:20 UTC20m
2026-07-19 N623BF - Jul 19, 16:45 UTCJul 19, 17:45 UTC1h 0m
2026-07-19 N623BF - Jul 19, 15:35 UTCJul 19, 16:10 UTC35m
2026-07-19 N623BF - Jul 19, 14:00 UTCJul 19, 15:00 UTC1h 0m
2026-07-19 N623BF - Jul 19, 12:45 UTCJul 19, 13:55 UTC1h 10m
2026-07-19 N623BF - Jul 19, 11:55 UTCJul 19, 12:05 UTC10m
2026-07-19 N623BF - Jul 19, 11:30 UTCJul 19, 11:40 UTC10m
2026-07-15 N623BF - Jul 15, 13:05 UTCJul 15, 13:25 UTC20m
2026-07-10 N623BF - Jul 10, 13:15 UTCJul 10, 14:05 UTC50m
2026-07-07 N623BF - Jul 7, 13:10 UTCJul 7, 13:25 UTC15m
2026-06-24 N623BF - Jun 24, 22:29 UTCJun 24, 22:39 UTC10m
2026-06-23 N623BF - Jun 23, 20:59 UTCJun 23, 21:10 UTC10m
2026-06-11 N623BF - Jun 11, 17:35 UTCJun 11, 20:35 UTC3h 0m
2026-06-11 N623BF - Jun 11, 16:05 UTCJun 11, 17:00 UTC55m
2026-06-11 N623BF - Jun 11, 14:55 UTCJun 11, 15:25 UTC30m
2026-05-22 N623BF - May 22, 13:50 UTCMay 22, 14:10 UTC20m
2026-05-06 N623BF - May 6, 01:30 UTCMay 6, 01:40 UTC10m
2026-04-19 N623BF - Apr 19, 22:30 UTCApr 19, 22:45 UTC15m
2026-04-19 N623BF - Apr 19, 19:20 UTCApr 19, 19:35 UTC15m
2026-04-19 N623BF - Apr 19, 15:00 UTCApr 19, 15:10 UTC10m

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 N623BF page for operator, model, and routing details .

Mode-S A82181 frequently asked

What is Mode-S code A82181?
A82181 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N623BF.
Where is Mode-S A82181 registered?
Mode-S code A82181 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 A82181 broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A82181, octal 52020601, decimal 11,018,625.
What flights does A82181 operate?
Mode-S A82181 has broadcast 1 distinct callsign, including N623BF.