Apparatus

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sensors Mode-S transponder

ABA23A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N849KS · operated by KANSAS STATE UNIVERSITY, C/O POLYTECHNIC CAMPUS AVIATION DEPT

Hex
ABA23A
Octal
52721072
Decimal
11,248,186
Country
US
Tail
N849KS
Type
C172
No current signal · last broadcast 5h ago
Flights observed
54
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S ABA23A.

Country allocation

The ICAO 24-bit address ABA23A 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
KSU49 - 54 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 KSU49 SLN → SLN Jun 2, 22:55 UTCJun 3, 00:00 UTC1h 5m
2026-06-02 KSU49 SLN → SLN Jun 2, 20:25 UTCJun 2, 21:50 UTC1h 25m
2026-06-02 KSU49 SLN → SLN Jun 2, 18:30 UTCJun 2, 19:05 UTC35m
2026-05-29 KSU49 - May 29, 21:15 UTCMay 29, 22:40 UTC1h 25m
2026-05-29 KSU49 SLN → SLN May 29, 18:15 UTCMay 29, 19:25 UTC1h 10m
2026-05-26 KSU49 - May 26, 21:34 UTCMay 26, 22:25 UTC50m
2026-05-26 KSU49 - May 26, 17:15 UTCMay 26, 17:55 UTC40m
2026-05-26 KSU49 - May 26, 15:20 UTCMay 26, 15:49 UTC30m
2026-05-26 KSU49 - May 26, 13:54 UTCMay 26, 14:24 UTC30m
2026-05-26 KSU49 - May 26, 11:54 UTCMay 26, 12:45 UTC50m
2026-05-21 KSU49 SLN → SLN May 21, 16:50 UTCMay 21, 17:30 UTC40m
2026-05-20 KSU49 SLN → SLN May 20, 17:45 UTCMay 20, 19:00 UTC1h 15m
2026-05-20 KSU49 SLN → SLN May 20, 14:55 UTCMay 20, 15:55 UTC1h 0m
2026-05-19 KSU49 SLN → SLN May 19, 20:55 UTCMay 19, 22:25 UTC1h 30m
2026-05-16 KSU49 - May 16, 16:55 UTCMay 16, 17:35 UTC40m
2026-05-15 KSU49 SLN → SLN May 15, 17:40 UTCMay 15, 18:25 UTC45m
2026-05-15 KSU49 SLN → SLN May 15, 15:00 UTCMay 15, 16:10 UTC1h 10m
2026-05-13 KSU49 SLN → SLN May 13, 21:35 UTCMay 13, 23:35 UTC2h 0m
2026-05-13 KSU49 - May 13, 14:30 UTCMay 13, 15:45 UTC1h 15m
2026-05-13 KSU49 SLN → SLN May 13, 12:30 UTCMay 13, 13:15 UTC45m
2026-05-12 KSU49 - May 12, 23:35 UTCMay 13, 00:15 UTC40m
2026-05-12 KSU49 - May 12, 02:45 UTCMay 12, 03:55 UTC1h 10m
2026-05-02 KSU49 - May 2, 03:10 UTCMay 2, 03:25 UTC15m
2026-05-02 KSU49 - May 2, 00:45 UTCMay 2, 02:35 UTC1h 50m
2026-05-01 KSU49 SLN → SLN May 1, 17:15 UTCMay 1, 18:05 UTC50m
2026-05-01 KSU49 SLN → SLN May 1, 12:35 UTCMay 1, 14:10 UTC1h 35m
2026-04-29 KSU49 SLN → SLN Apr 29, 21:10 UTCApr 29, 22:30 UTC1h 20m
2026-04-28 KSU49 SLN → SLN Apr 28, 21:25 UTCApr 28, 22:25 UTC1h 0m
2026-04-28 KSU49 SLN → SLN Apr 28, 00:10 UTCApr 28, 01:50 UTC1h 40m
2026-04-24 KSU49 SLN → SLN Apr 24, 18:00 UTCApr 24, 20:40 UTC2h 40m
2026-04-24 KSU49 - Apr 24, 15:55 UTCApr 24, 16:25 UTC30m
2026-04-24 KSU49 - Apr 24, 13:30 UTCApr 24, 14:15 UTC45m
2026-04-24 KSU49 SLN → SLN Apr 24, 00:10 UTCApr 24, 00:50 UTC40m
2026-04-22 KSU49 SLN → SLN Apr 22, 22:10 UTCApr 23, 00:15 UTC2h 5m
2026-04-20 KSU49 SLN → SLN Apr 20, 20:40 UTCApr 21, 00:40 UTC4h 0m
2026-04-20 KSU49 SLN → SLN Apr 20, 13:15 UTCApr 20, 14:10 UTC55m
2026-04-19 KSU49 SLN → SLN Apr 19, 19:00 UTCApr 19, 20:10 UTC1h 10m
2026-04-19 KSU49 SLN → SLN Apr 19, 17:00 UTCApr 19, 18:10 UTC1h 10m
2026-04-19 KSU49 SLN → SLN Apr 19, 14:45 UTCApr 19, 16:05 UTC1h 20m
2026-04-19 KSU49 - Apr 19, 03:50 UTCApr 19, 04:15 UTC25m
2026-04-19 KSU49 - Apr 19, 01:45 UTCApr 19, 02:30 UTC45m
2026-04-18 KSU49 SLN → SLN Apr 18, 15:05 UTCApr 18, 15:45 UTC40m
2026-04-17 KSU49 SLN → SLN Apr 17, 19:50 UTCApr 17, 20:45 UTC55m
2026-04-17 KSU49 - Apr 17, 03:20 UTCApr 17, 04:35 UTC1h 16m
2026-04-17 KSU49 - Apr 17, 01:45 UTCApr 17, 03:15 UTC1h 30m
2026-04-16 KSU49 - Apr 16, 21:14 UTCApr 16, 21:45 UTC30m
2026-04-16 KSU49 - Apr 16, 20:45 UTCApr 16, 21:10 UTC25m
2026-04-16 KSU49 - Apr 16, 19:15 UTCApr 16, 20:05 UTC50m
2026-04-16 KSU49 - Apr 16, 15:15 UTCApr 16, 16:10 UTC55m
2026-04-16 KSU49 - Apr 16, 14:40 UTCApr 16, 15:10 UTC30m

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 N849KS page for operator, model, and routing details .

Mode-S ABA23A frequently asked

What is Mode-S code ABA23A?
ABA23A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N849KS.
Where is Mode-S ABA23A registered?
Mode-S code ABA23A 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 ABA23A broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABA23A, octal 52721072, decimal 11,248,186.
What flights does ABA23A operate?
Mode-S ABA23A has broadcast 1 distinct callsign, including KSU49.