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
Broadcasting now · callsign CXK119 · 7,275 ft
Flights observed
200
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 18:30 UTC

Current position

A23A01 is currently broadcasting. Map zoomed to live position.

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 - 200 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CXK119 - Jul 25, 16:50 UTCJul 25, 18:30 UTC1h 40m
2026-07-25 CXK119 - Jul 25, 13:50 UTCJul 25, 15:15 UTC1h 25m
2026-07-24 CXK119 APA → APA Jul 24, 14:40 UTCJul 24, 17:10 UTC2h 30m
2026-07-24 CXK119 - Jul 24, 12:00 UTCJul 24, 13:15 UTC1h 15m
2026-07-23 CXK119 - Jul 23, 14:55 UTCJul 23, 15:25 UTC30m
2026-07-17 CXK119 - Jul 17, 15:05 UTCJul 17, 16:04 UTC1h 0m
2026-07-17 CXK119 BJC → BJC Jul 17, 11:15 UTCJul 17, 13:45 UTC2h 30m
2026-07-16 CXK119 BJC → BJC Jul 16, 11:15 UTCJul 16, 13:15 UTC2h 0m
2026-07-16 CXK119 BJC → BJC Jul 16, 01:55 UTCJul 16, 03:00 UTC1h 5m
2026-07-15 CXK119 - Jul 15, 23:15 UTCJul 16, 00:00 UTC45m
2026-07-15 CXK119 - Jul 15, 20:15 UTCJul 15, 21:20 UTC1h 5m
2026-07-15 CXK119 BJC → BJC Jul 15, 14:30 UTCJul 15, 15:55 UTC1h 25m
2026-07-15 CXK119 BJC → BJC Jul 15, 11:25 UTCJul 15, 13:00 UTC1h 35m
2026-07-14 CXK119 BJC → BJC Jul 14, 22:10 UTCJul 15, 00:10 UTC1h 59m
2026-07-14 CXK119 BJC → BJC Jul 14, 17:30 UTCJul 14, 18:45 UTC1h 15m
2026-07-14 CXK119 BJC → BJC Jul 14, 14:10 UTCJul 14, 15:15 UTC1h 5m
2026-07-14 CXK119 BJC → BJC Jul 14, 11:20 UTCJul 14, 12:40 UTC1h 20m
2026-07-13 CXK119 BJC → BJC Jul 13, 18:00 UTCJul 13, 19:00 UTC1h 0m
2026-07-13 CXK119 BJC → BJC Jul 13, 14:15 UTCJul 13, 16:10 UTC1h 55m
2026-07-13 CXK119 BJC → BJC Jul 13, 12:00 UTCJul 13, 13:20 UTC1h 20m
2026-07-12 CXK119 BJC → BJC Jul 12, 14:01 UTCJul 12, 15:55 UTC1h 55m
2026-07-12 CXK119 BJC → BJC Jul 12, 11:25 UTCJul 12, 12:55 UTC1h 30m
2026-07-11 CXK119 BJC → BJC Jul 11, 17:00 UTCJul 11, 18:15 UTC1h 15m
2026-07-11 CXK119 BJC → BJC Jul 11, 14:10 UTCJul 11, 15:55 UTC1h 45m
2026-07-11 CXK119 BJC → BJC Jul 11, 11:35 UTCJul 11, 13:00 UTC1h 25m
2026-07-10 CXK119 BJC → BJC Jul 10, 17:00 UTCJul 10, 18:45 UTC1h 45m
2026-07-10 CXK119 BJC → BJC Jul 10, 11:20 UTCJul 10, 12:40 UTC1h 20m
2026-07-09 CXK119 BJC → BJC Jul 9, 11:30 UTCJul 9, 13:00 UTC1h 30m
2026-07-08 CXK119 BJC → BJC Jul 8, 14:05 UTCJul 8, 15:50 UTC1h 45m
2026-07-08 CXK119 BJC → BJC Jul 8, 12:30 UTCJul 8, 12:35 UTC5m
2026-07-08 CXK119 BJC → BJC Jul 8, 12:15 UTCJul 8, 12:25 UTC10m
2026-07-08 CXK119 BJC → BJC Jul 8, 11:40 UTCJul 8, 11:45 UTC5m
2026-07-08 CXK119 - Jul 8, 11:15 UTCJul 8, 11:25 UTC10m
2026-07-08 CXK119 BJC → BJC Jul 8, 11:05 UTCJul 8, 11:10 UTC5m
2026-07-07 CXK119 BJC → BJC Jul 7, 17:55 UTCJul 7, 18:40 UTC45m
2026-07-07 CXK119 - Jul 7, 15:25 UTCJul 7, 16:15 UTC50m
2026-07-07 CXK119 BJC → COS Jul 7, 13:25 UTCJul 7, 15:20 UTC1h 55m
2026-07-07 CXK119 - Jul 7, 11:20 UTCJul 7, 11:35 UTC15m
2026-07-07 CXK119 BJC → BJC Jul 7, 11:10 UTCJul 7, 11:15 UTC5m
2026-07-06 CXK119 BJC → BJC Jul 6, 18:00 UTCJul 6, 18:40 UTC40m
2026-07-06 CXK119 - Jul 6, 15:25 UTCJul 6, 16:10 UTC45m
2026-07-06 CXK119 BJC → COS Jul 6, 13:20 UTCJul 6, 15:15 UTC1h 55m
2026-07-06 CXK119 BJC → BJC Jul 6, 11:20 UTCJul 6, 11:40 UTC20m
2026-07-06 CXK119 BJC → BJC Jul 6, 11:10 UTCJul 6, 11:15 UTC5m
2026-07-05 CXK119 BJC → BJC Jul 5, 14:00 UTCJul 5, 16:40 UTC2h 40m
2026-07-05 CXK119 BJC → BJC Jul 5, 12:55 UTCJul 5, 13:00 UTC5m
2026-07-05 CXK119 BJC → BJC Jul 5, 12:30 UTCJul 5, 12:40 UTC10m
2026-07-05 CXK119 - Jul 5, 11:25 UTCJul 5, 11:40 UTC15m
2026-07-04 CXK119 - Jul 4, 13:10 UTCJul 4, 13:15 UTC5m
2026-07-04 CXK119 BJC → BJC Jul 4, 12:55 UTCJul 4, 13:05 UTC10m

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?
Yes. Mode-S A23A01 is currently airborne.
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.