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sensors Mode-S transponder

AB2512

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N817TM · CIRRUS SR-22 · operated by HORN ASSOCIATES LLC

Hex
AB2512
Octal
52622422
Decimal
11,216,146
Country
US
Tail
N817TM
Type
SR22
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
154
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S AB2512.

Country allocation

The ICAO 24-bit address AB2512 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
N817TM - 154 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N817TM - Jul 26, 21:20 UTCJul 26, 22:30 UTC1h 10m
2026-07-26 N817TM - Jul 26, 20:15 UTCJul 26, 20:35 UTC20m
2026-07-26 N817TM - Jul 26, 19:20 UTCJul 26, 19:40 UTC20m
2026-07-26 N817TM - Jul 26, 17:40 UTCJul 26, 18:20 UTC40m
2026-07-26 N817TM - Jul 26, 00:05 UTCJul 26, 00:50 UTC45m
2026-07-25 N817TM - Jul 25, 23:05 UTCJul 25, 23:35 UTC30m
2026-07-25 N817TM - Jul 25, 22:15 UTCJul 25, 22:25 UTC10m
2026-07-25 N817TM - Jul 25, 16:10 UTCJul 25, 17:00 UTC50m
2026-07-25 N817TM - Jul 25, 14:35 UTCJul 25, 15:30 UTC55m
2026-07-25 N817TM - Jul 25, 13:00 UTCJul 25, 13:40 UTC40m
2026-07-24 N817TM - Jul 24, 15:15 UTCJul 24, 16:00 UTC45m
2026-07-24 N817TM - Jul 24, 12:10 UTCJul 24, 14:35 UTC2h 25m
2026-07-24 N817TM - Jul 24, 11:15 UTCJul 24, 11:30 UTC15m
2026-07-23 N817TM BED → ASH Jul 23, 20:20 UTCJul 23, 20:35 UTC15m
2026-07-23 N817TM - Jul 23, 19:10 UTCJul 23, 19:45 UTC35m
2026-07-23 N817TM - Jul 23, 17:15 UTCJul 23, 18:20 UTC1h 5m
2026-07-23 N817TM - Jul 23, 10:50 UTCJul 23, 11:50 UTC1h 0m
2026-07-23 N817TM - Jul 23, 09:40 UTCJul 23, 09:55 UTC15m
2026-07-19 N817TM - Jul 19, 20:50 UTCJul 19, 22:00 UTC1h 10m
2026-07-19 N817TM - Jul 19, 18:50 UTCJul 19, 19:45 UTC55m
2026-07-19 N817TM - Jul 19, 17:05 UTCJul 19, 18:00 UTC55m
2026-07-19 N817TM ASH → LEB Jul 19, 15:35 UTCJul 19, 16:05 UTC30m
2026-07-18 N817TM - Jul 18, 15:15 UTCJul 18, 17:40 UTC2h 25m
2026-07-18 N817TM CON → ASH Jul 18, 03:15 UTCJul 18, 03:35 UTC20m
2026-07-18 N817TM - Jul 18, 01:25 UTCJul 18, 02:55 UTC1h 31m
2026-07-17 N817TM LEB → BBX Jul 17, 22:05 UTCJul 18, 00:35 UTC2h 30m
2026-07-17 N817TM - Jul 17, 20:29 UTCJul 17, 21:20 UTC50m
2026-07-17 N817TM - Jul 17, 18:15 UTCJul 17, 19:40 UTC1h 25m
2026-07-16 N817TM ASH → ASH Jul 16, 16:05 UTCJul 16, 20:25 UTC4h 20m
2026-07-06 N817TM - Jul 6, 23:35 UTCJul 7, 00:45 UTC1h 10m
2026-07-06 N817TM PVC → MMU Jul 6, 21:20 UTCJul 6, 22:40 UTC1h 20m
2026-07-06 N817TM - Jul 6, 17:55 UTCJul 6, 20:20 UTC2h 25m
2026-07-06 N817TM - Jul 6, 13:15 UTCJul 6, 16:30 UTC3h 15m
2026-07-04 N817TM - Jul 4, 14:05 UTCJul 4, 15:55 UTC1h 50m
2026-07-04 N817TM - Jul 4, 09:55 UTCJul 4, 12:10 UTC2h 15m
2026-06-29 N817TM ASH → ASH Jun 29, 13:04 UTCJun 29, 15:14 UTC2h 10m
2026-06-28 N817TM - Jun 28, 20:09 UTCJun 28, 20:54 UTC45m
2026-06-28 N817TM - Jun 28, 18:10 UTCJun 28, 19:04 UTC55m
2026-06-28 N817TM - Jun 28, 16:39 UTCJun 28, 17:30 UTC50m
2026-06-25 N817TM - Jun 25, 22:29 UTCJun 25, 22:39 UTC10m
2026-06-25 N817TM - Jun 25, 21:25 UTCJun 25, 22:04 UTC40m
2026-06-25 N817TM - Jun 25, 19:39 UTCJun 25, 20:25 UTC45m
2026-06-25 N817TM - Jun 25, 16:45 UTCJun 25, 18:15 UTC1h 30m
2026-06-25 N817TM - Jun 25, 13:45 UTCJun 25, 15:44 UTC2h 0m
2026-06-23 N817TM - Jun 23, 21:49 UTCJun 23, 23:50 UTC2h 0m
2026-06-23 N817TM - Jun 23, 19:10 UTCJun 23, 20:10 UTC1h 0m
2026-06-23 N817TM - Jun 23, 17:15 UTCJun 23, 18:39 UTC1h 25m
2026-06-23 N817TM - Jun 23, 15:55 UTCJun 23, 16:29 UTC35m
2026-06-22 N817TM - Jun 22, 13:14 UTCJun 22, 14:59 UTC1h 45m
2026-06-22 N817TM ASH → BED Jun 22, 11:54 UTCJun 22, 12:10 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 N817TM page for operator, model, and routing details .

Mode-S AB2512 frequently asked

What is Mode-S code AB2512?
AB2512 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N817TM.
Where is Mode-S AB2512 registered?
Mode-S code AB2512 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 AB2512 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB2512, octal 52622422, decimal 11,216,146.
What flights does AB2512 operate?
Mode-S AB2512 has broadcast 1 distinct callsign, including N817TM.