Apparatus

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sensors Mode-S transponder

A23A01

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N24210 · operated by ATP AIRCRAFT 1 LLC

Hex
A23A01
Octal
50435001
Decimal
10,631,681
Country
US
Tail
N24210
Type
C172
No current signal · last broadcast 7h ago
Flights observed
93
Distinct callsigns
1
Country
US
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S A23A01.

Country allocation

The ICAO 24-bit address A23A01 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
CXK119 - 93 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CXK119 BJC → BJC Jun 2, 16:15 UTCJun 2, 17:30 UTC1h 15m
2026-06-01 CXK119 BJC → BJC Jun 1, 16:45 UTCJun 1, 17:15 UTC30m
2026-06-01 CXK119 BJC → BJC Jun 1, 15:20 UTCJun 1, 15:30 UTC10m
2026-06-01 CXK119 BJC → BJC Jun 1, 15:00 UTCJun 1, 15:10 UTC10m
2026-06-01 CXK119 - Jun 1, 14:40 UTCJun 1, 14:50 UTC10m
2026-06-01 CXK119 BJC → BJC Jun 1, 14:15 UTCJun 1, 14:25 UTC10m
2026-06-01 CXK119 BJC → BJC Jun 1, 14:05 UTCJun 1, 14:10 UTC5m
2026-06-01 CXK119 BJC → BJC Jun 1, 10:55 UTCJun 1, 12:40 UTC1h 45m
2026-05-31 CXK119 - May 31, 18:10 UTCMay 31, 19:00 UTC50m
2026-05-31 CXK119 - May 31, 15:40 UTCMay 31, 17:00 UTC1h 20m
2026-05-30 CXK119 BJC → BJC May 30, 17:00 UTCMay 30, 18:00 UTC1h 0m
2026-05-30 CXK119 BJC → BJC May 30, 13:55 UTCMay 30, 15:35 UTC1h 40m
2026-05-30 CXK119 BJC → BJC May 30, 12:05 UTCMay 30, 12:25 UTC20m
2026-05-30 CXK119 BJC → BJC May 30, 11:15 UTCMay 30, 12:00 UTC45m
2026-05-29 CXK119 BJC → BJC May 29, 17:35 UTCMay 29, 19:05 UTC1h 30m
2026-05-28 CXK119 - May 28, 19:40 UTCMay 28, 20:45 UTC1h 5m
2026-05-28 CXK119 BJC → BJC May 28, 19:25 UTCMay 28, 19:30 UTC5m
2026-05-28 CXK119 BJC → BJC May 28, 19:10 UTCMay 28, 19:20 UTC10m
2026-05-28 CXK119 BJC → BJC May 28, 18:55 UTCMay 28, 19:05 UTC10m
2026-05-27 CXK119 - May 27, 18:55 UTCMay 27, 20:20 UTC1h 25m
2026-05-27 CXK119 BJC → BJC May 27, 18:20 UTCMay 27, 18:30 UTC10m
2026-05-27 CXK119 BJC → BJC May 27, 14:20 UTCMay 27, 16:35 UTC2h 15m
2026-05-26 CXK119 BJC → BJC May 26, 18:05 UTCMay 26, 19:20 UTC1h 15m
2026-05-26 CXK119 BJC → BJC May 26, 12:35 UTCMay 26, 14:00 UTC1h 25m
2026-05-24 CXK119 - May 24, 04:45 UTCMay 24, 05:40 UTC55m
2026-05-24 CXK119 - May 24, 00:15 UTCMay 24, 01:15 UTC1h 0m
2026-05-23 CXK119 BJC → BJC May 23, 16:50 UTCMay 23, 18:45 UTC1h 55m
2026-05-23 CXK119 BJC → BJC May 23, 14:05 UTCMay 23, 15:35 UTC1h 30m
2026-05-23 CXK119 BJC → BJC May 23, 11:25 UTCMay 23, 12:25 UTC1h 0m
2026-05-22 CXK119 BJC → BJC May 22, 23:20 UTCMay 23, 00:30 UTC1h 10m
2026-05-22 CXK119 BJC → BJC May 22, 20:35 UTCMay 22, 22:20 UTC1h 45m
2026-05-22 CXK119 BJC → BJC May 22, 17:10 UTCMay 22, 18:30 UTC1h 20m
2026-05-22 CXK119 BJC → BJC May 22, 15:00 UTCMay 22, 15:50 UTC50m
2026-05-22 CXK119 BJC → BJC May 22, 12:00 UTCMay 22, 13:55 UTC1h 55m
2026-05-21 CXK119 BJC → BJC May 21, 19:25 UTCMay 21, 20:15 UTC50m
2026-05-21 CXK119 BJC → BJC May 21, 16:50 UTCMay 21, 17:35 UTC45m
2026-05-21 CXK119 BJC → BJC May 21, 13:55 UTCMay 21, 15:25 UTC1h 30m
2026-05-21 CXK119 BJC → BJC May 21, 11:40 UTCMay 21, 12:35 UTC55m
2026-05-20 CXK119 BJC → BJC May 20, 16:40 UTCMay 20, 18:00 UTC1h 20m
2026-05-15 CXK119 BJC → BJC May 15, 17:00 UTCMay 15, 18:40 UTC1h 40m
2026-05-15 CXK119 BJC → BJC May 15, 14:55 UTCMay 15, 16:05 UTC1h 10m
2026-05-15 CXK119 BJC → BJC May 15, 11:15 UTCMay 15, 13:15 UTC2h 0m
2026-05-15 CXK119 BJC → BJC May 15, 03:25 UTCMay 15, 05:50 UTC2h 25m
2026-05-14 CXK119 BJC → BJC May 14, 22:10 UTCMay 15, 00:15 UTC2h 5m
2026-05-14 CXK119 BJC → BJC May 14, 19:40 UTCMay 14, 20:00 UTC20m
2026-05-14 CXK119 BJC → BJC May 14, 18:10 UTCMay 14, 19:35 UTC1h 25m
2026-05-14 CXK119 BJC → BJC May 14, 11:10 UTCMay 14, 13:20 UTC2h 10m
2026-05-14 CXK119 - May 14, 00:05 UTCMay 14, 00:25 UTC20m
2026-05-13 CXK119 - May 13, 15:20 UTCMay 13, 16:40 UTC1h 20m
2026-05-07 CXK119 - May 7, 17:50 UTCMay 7, 18:40 UTC50m

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 N24210 page for operator, model, and routing details .

Mode-S A23A01 frequently asked

What is Mode-S code A23A01?
A23A01 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N24210.
Where is Mode-S A23A01 registered?
Mode-S code A23A01 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 A23A01 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A23A01, octal 50435001, decimal 10,631,681.
What flights does A23A01 operate?
Mode-S A23A01 has broadcast 1 distinct callsign, including CXK119.