Apparatus

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sensors Mode-S transponder

AB23F3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N817G · PIPER PA-28-140/150/160/180 · operated by ATP AIRCRAFT 9 LLC

Hex
AB23F3
Octal
52621763
Decimal
11,215,859
Country
US
Tail
N817G
Type
P28A
No current signal · last broadcast 14h ago
Flights observed
152
Distinct callsigns
1
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S AB23F3.

Country allocation

The ICAO 24-bit address AB23F3 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
CXK193 - 152 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CXK193 - Jul 17, 16:34 UTCJul 17, 18:10 UTC1h 35m
2026-07-17 CXK193 - Jul 17, 15:35 UTCJul 17, 15:49 UTC15m
2026-07-17 CXK193 - Jul 17, 14:20 UTCJul 17, 14:55 UTC35m
2026-07-17 CXK193 - Jul 17, 12:25 UTCJul 17, 13:29 UTC1h 5m
2026-07-17 CXK193 - Jul 17, 11:15 UTCJul 17, 11:39 UTC25m
2026-07-16 CXK193 - Jul 16, 20:55 UTCJul 16, 22:35 UTC1h 40m
2026-07-16 CXK193 - Jul 16, 16:09 UTCJul 16, 17:49 UTC1h 40m
2026-07-16 CXK193 - Jul 16, 15:05 UTCJul 16, 15:25 UTC20m
2026-07-16 CXK193 - Jul 16, 13:34 UTCJul 16, 14:05 UTC30m
2026-07-16 CXK193 - Jul 16, 12:40 UTCJul 16, 12:55 UTC15m
2026-07-16 CXK193 - Jul 16, 11:20 UTCJul 16, 11:50 UTC30m
2026-07-15 CXK193 - Jul 15, 20:00 UTCJul 15, 20:10 UTC10m
2026-07-15 CXK193 - Jul 15, 18:40 UTCJul 15, 19:15 UTC35m
2026-07-15 CXK193 - Jul 15, 17:25 UTCJul 15, 17:35 UTC10m
2026-07-15 CXK193 - Jul 15, 15:40 UTCJul 15, 16:30 UTC50m
2026-07-14 CXK193 - Jul 14, 21:25 UTCJul 14, 22:25 UTC1h 0m
2026-07-14 CXK193 - Jul 14, 19:30 UTCJul 14, 20:15 UTC45m
2026-07-14 CXK193 - Jul 14, 11:20 UTCJul 14, 12:00 UTC40m
2026-07-13 CXK193 - Jul 13, 15:20 UTCJul 13, 16:45 UTC1h 25m
2026-07-10 CXK193 - Jul 10, 20:35 UTCJul 10, 21:25 UTC50m
2026-07-10 CXK193 - Jul 10, 16:10 UTCJul 10, 17:00 UTC50m
2026-07-09 CXK193 - Jul 9, 19:30 UTCJul 9, 20:00 UTC30m
2026-07-09 CXK193 - Jul 9, 18:05 UTCJul 9, 18:35 UTC30m
2026-07-09 CXK193 - Jul 9, 13:05 UTCJul 9, 14:35 UTC1h 30m
2026-07-09 CXK193 - Jul 9, 09:25 UTCJul 9, 11:10 UTC1h 45m
2026-07-08 CXK193 - Jul 8, 22:15 UTCJul 8, 22:40 UTC25m
2026-07-08 CXK193 - Jul 8, 21:00 UTCJul 8, 21:35 UTC35m
2026-07-08 CXK193 - Jul 8, 15:35 UTCJul 8, 17:10 UTC1h 35m
2026-07-08 CXK193 - Jul 8, 14:15 UTCJul 8, 14:45 UTC30m
2026-07-08 CXK193 - Jul 8, 12:40 UTCJul 8, 13:15 UTC35m
2026-07-07 CXK193 - Jul 7, 16:10 UTCJul 7, 17:55 UTC1h 45m
2026-07-07 CXK193 - Jul 7, 12:55 UTCJul 7, 15:00 UTC2h 5m
2026-07-06 CXK193 - Jul 6, 15:20 UTCJul 6, 16:50 UTC1h 30m
2026-07-06 CXK193 USA → USA Jul 6, 12:25 UTCJul 6, 14:15 UTC1h 50m
2026-07-03 CXK193 USA → USA Jul 3, 12:55 UTCJul 3, 13:50 UTC55m
2026-07-02 CXK193 USA → USA Jul 2, 18:45 UTCJul 2, 19:30 UTC45m
2026-07-02 CXK193 - Jul 2, 14:00 UTCJul 2, 15:45 UTC1h 45m
2026-07-01 CXK193 - Jul 1, 21:00 UTCJul 1, 21:10 UTC10m
2026-07-01 CXK193 - Jul 1, 19:45 UTCJul 1, 20:10 UTC25m
2026-06-30 CXK193 - Jun 30, 22:50 UTCJul 1, 00:15 UTC1h 25m
2026-06-30 CXK193 - Jun 30, 17:35 UTCJun 30, 19:15 UTC1h 40m
2026-06-30 CXK193 - Jun 30, 15:10 UTCJun 30, 16:05 UTC55m
2026-06-30 CXK193 - Jun 30, 14:00 UTCJun 30, 14:10 UTC10m
2026-06-30 CXK193 - Jun 30, 12:35 UTCJun 30, 12:50 UTC15m
2026-06-29 CXK193 - Jun 29, 18:44 UTCJun 29, 19:44 UTC1h 0m
2026-06-29 CXK193 - Jun 29, 14:34 UTCJun 29, 15:34 UTC1h 0m
2026-06-28 CXK193 - Jun 28, 22:15 UTCJun 28, 22:59 UTC45m
2026-06-26 CXK193 - Jun 26, 14:35 UTCJun 26, 14:50 UTC15m
2026-06-26 CXK193 - Jun 26, 13:49 UTCJun 26, 14:05 UTC15m
2026-06-26 CXK193 - Jun 26, 12:19 UTCJun 26, 12:50 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 N817G page for operator, model, and routing details .

Mode-S AB23F3 frequently asked

What is Mode-S code AB23F3?
AB23F3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N817G.
Where is Mode-S AB23F3 registered?
Mode-S code AB23F3 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 AB23F3 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB23F3, octal 52621763, decimal 11,215,859.
What flights does AB23F3 operate?
Mode-S AB23F3 has broadcast 1 distinct callsign, including CXK193.