Apparatus

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sensors Mode-S transponder

AB6BDF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N835KS · CESSNA 172 Skyhawk · operated by KANSAS STATE UNIVERSITY

Hex
AB6BDF
Octal
52665737
Decimal
11,234,271
Country
US
Tail
N835KS
Type
C172
No current signal · last broadcast 3d ago
Flights observed
42
Distinct callsigns
1
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S AB6BDF.

Country allocation

The ICAO 24-bit address AB6BDF 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
KSU35 - 42 2026-05-26

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-05-26 KSU35 SLN → SLN May 26, 18:40 UTCMay 26, 22:05 UTC3h 25m
2026-05-26 KSU35 - May 26, 15:05 UTCMay 26, 16:20 UTC1h 15m
2026-05-20 KSU35 SLN → SLN May 20, 12:55 UTCMay 20, 14:05 UTC1h 10m
2026-05-19 KSU35 SLN → SLN May 19, 23:05 UTCMay 20, 00:10 UTC1h 5m
2026-05-15 KSU35 SLN → SLN May 15, 19:25 UTCMay 15, 20:35 UTC1h 10m
2026-05-15 KSU35 SLN → SLN May 15, 17:00 UTCMay 15, 17:55 UTC55m
2026-05-13 KSU35 SLN → SLN May 13, 20:55 UTCMay 13, 21:30 UTC35m
2026-05-07 KSU35 - May 7, 02:35 UTCMay 7, 03:25 UTC50m
2026-05-06 KSU35 - May 6, 22:50 UTCMay 6, 23:10 UTC20m
2026-05-04 KSU35 - May 4, 14:15 UTCMay 4, 15:20 UTC1h 5m
2026-05-03 KSU35 SLN → SLN May 3, 18:45 UTCMay 3, 20:15 UTC1h 30m
2026-05-02 KSU35 SLN → SLN May 2, 17:05 UTCMay 2, 18:30 UTC1h 25m
2026-05-02 KSU35 SLN → SLN May 2, 15:20 UTCMay 2, 16:05 UTC45m
2026-05-01 KSU35 SLN → SLN May 1, 18:15 UTCMay 1, 19:30 UTC1h 15m
2026-05-01 KSU35 SLN → SLN May 1, 14:45 UTCMay 1, 16:30 UTC1h 45m
2026-04-30 KSU35 SLN → SLN Apr 30, 21:05 UTCApr 30, 22:15 UTC1h 10m
2026-04-30 KSU35 SLN → SLN Apr 30, 19:05 UTCApr 30, 19:50 UTC45m
2026-04-30 KSU35 SLN → SLN Apr 30, 15:05 UTCApr 30, 16:20 UTC1h 15m
2026-04-29 KSU35 SLN → SLN Apr 29, 22:55 UTCApr 30, 00:00 UTC1h 4m
2026-04-29 KSU35 SLN → SLN Apr 29, 21:00 UTCApr 29, 22:00 UTC1h 0m
2026-04-29 KSU35 SLN → SLN Apr 29, 18:15 UTCApr 29, 19:15 UTC1h 0m
2026-04-29 KSU35 SLN → SLN Apr 29, 15:50 UTCApr 29, 17:25 UTC1h 35m
2026-04-29 KSU35 SLN → SLN Apr 29, 12:55 UTCApr 29, 14:15 UTC1h 20m
2026-04-29 KSU35 - Apr 29, 01:05 UTCApr 29, 01:54 UTC50m
2026-04-28 KSU35 - Apr 28, 23:29 UTCApr 29, 00:20 UTC50m
2026-04-28 KSU35 SLN → SLN Apr 28, 21:19 UTCApr 28, 22:10 UTC50m
2026-04-25 KSU35 SLN → SLN Apr 25, 00:00 UTCApr 25, 01:20 UTC1h 20m
2026-04-24 KSU35 - Apr 24, 21:00 UTCApr 24, 22:10 UTC1h 10m
2026-04-24 KSU35 SLN → SLN Apr 24, 18:05 UTCApr 24, 18:45 UTC40m
2026-04-24 KSU35 SLN → SLN Apr 24, 15:30 UTCApr 24, 16:35 UTC1h 5m
2026-04-24 KSU35 SLN → SLN Apr 24, 12:30 UTCApr 24, 13:55 UTC1h 25m
2026-04-20 KSU35 SLN → SLN Apr 20, 13:05 UTCApr 20, 14:20 UTC1h 15m
2026-04-19 KSU35 SLN → SLN Apr 19, 20:25 UTCApr 19, 21:20 UTC55m
2026-04-19 KSU35 SLN → SLN Apr 19, 17:40 UTCApr 19, 18:55 UTC1h 15m
2026-04-16 KSU35 - Apr 16, 15:15 UTCApr 16, 16:20 UTC1h 5m
2026-04-16 KSU35 SLN → SLN Apr 16, 13:15 UTCApr 16, 13:30 UTC15m
2026-04-16 KSU35 SLN → SLN Apr 16, 12:39 UTCApr 16, 13:05 UTC25m
2026-04-15 KSU35 - Apr 15, 23:10 UTCApr 16, 00:10 UTC1h 0m
2026-04-15 KSU35 - Apr 15, 22:50 UTCApr 15, 23:00 UTC10m
2026-04-14 KSU35 SLN → SLN Apr 14, 13:25 UTCApr 14, 14:45 UTC1h 20m
2026-04-13 KSU35 - Apr 13, 23:00 UTCApr 13, 23:40 UTC40m
2026-04-13 KSU35 SLN → SLN Apr 13, 13:00 UTCApr 13, 14:05 UTC1h 5m

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 N835KS page for operator, model, and routing details .

Mode-S AB6BDF frequently asked

What is Mode-S code AB6BDF?
AB6BDF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N835KS.
Where is Mode-S AB6BDF registered?
Mode-S code AB6BDF 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 AB6BDF broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB6BDF, octal 52665737, decimal 11,234,271.
What flights does AB6BDF operate?
Mode-S AB6BDF has broadcast 1 distinct callsign, including KSU35.