Apparatus

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sensors Mode-S transponder

A1B6E3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2098A · CESSNA 172R Cutlass RG · operated by ATP AIRCRAFT 1 LLC

Hex
A1B6E3
Octal
50333343
Decimal
10,598,115
Country
US
Tail
N2098A
Type
C72R
No current signal · last broadcast 1h ago
Flights observed
73
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A1B6E3.

Country allocation

The ICAO 24-bit address A1B6E3 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
CXK352 - 73 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 CXK352 - Jul 19, 15:35 UTCJul 19, 15:55 UTC20m
2026-07-19 CXK352 - Jul 19, 00:40 UTCJul 19, 01:05 UTC25m
2026-07-18 CXK352 - Jul 18, 16:40 UTCJul 18, 16:50 UTC10m
2026-07-16 CXK352 - Jul 16, 21:45 UTCJul 16, 22:19 UTC35m
2026-07-16 CXK352 - Jul 16, 14:00 UTCJul 16, 15:19 UTC1h 20m
2026-07-16 CXK352 CXO → CXO Jul 16, 13:00 UTCJul 16, 13:15 UTC15m
2026-07-16 CXK352 - Jul 16, 00:15 UTCJul 16, 01:35 UTC1h 20m
2026-07-15 CXK352 - Jul 15, 22:50 UTCJul 15, 23:20 UTC30m
2026-07-15 CXK352 - Jul 15, 21:45 UTCJul 15, 22:15 UTC30m
2026-07-10 CXK352 - Jul 10, 13:30 UTCJul 10, 14:35 UTC1h 5m
2026-07-06 CXK352 - Jul 6, 14:10 UTCJul 6, 14:25 UTC15m
2026-07-03 CXK352 - Jul 3, 21:40 UTCJul 3, 21:50 UTC10m
2026-07-02 CXK352 - Jul 2, 13:55 UTCJul 2, 14:05 UTC10m
2026-07-01 CXK352 - Jul 1, 15:35 UTCJul 1, 16:00 UTC25m
2026-07-01 CXK352 - Jul 1, 00:30 UTCJul 1, 00:40 UTC10m
2026-06-30 CXK352 - Jun 30, 23:25 UTCJun 30, 23:40 UTC15m
2026-06-30 CXK352 - Jun 30, 14:35 UTCJun 30, 15:20 UTC45m
2026-06-27 CXK352 - Jun 27, 19:49 UTCJun 27, 19:59 UTC10m
2026-06-27 CXK352 - Jun 27, 17:04 UTCJun 27, 18:35 UTC1h 30m
2026-06-25 CXK352 - Jun 25, 18:34 UTCJun 25, 18:50 UTC15m
2026-06-25 CXK352 CXO → CXO Jun 25, 14:20 UTCJun 25, 14:34 UTC15m
2026-06-24 CXK352 - Jun 24, 18:05 UTCJun 24, 18:29 UTC25m
2026-06-23 CXK352 - Jun 23, 19:24 UTCJun 23, 19:44 UTC20m
2026-06-22 CXK352 - Jun 22, 17:25 UTCJun 22, 18:30 UTC1h 5m
2026-06-22 CXK352 - Jun 22, 02:54 UTCJun 22, 04:40 UTC1h 45m
2026-06-19 CXK352 - Jun 19, 17:14 UTCJun 19, 18:39 UTC1h 25m
2026-06-19 CXK352 - Jun 19, 00:20 UTCJun 19, 00:34 UTC15m
2026-06-11 CXK352 - Jun 11, 19:15 UTCJun 11, 19:35 UTC20m
2026-06-10 CXK352 - Jun 10, 22:35 UTCJun 10, 22:50 UTC15m
2026-06-09 CXK352 - Jun 9, 21:00 UTCJun 9, 21:10 UTC10m
2026-05-29 CXK352 - May 29, 00:10 UTCMay 29, 00:20 UTC10m
2026-05-28 CXK352 - May 28, 16:05 UTCMay 28, 16:15 UTC10m
2026-05-26 CXK352 - May 26, 21:29 UTCMay 26, 21:40 UTC10m
2026-05-22 CXK352 - May 22, 01:25 UTCMay 22, 01:35 UTC10m
2026-05-22 CXK352 - May 22, 00:00 UTCMay 22, 00:10 UTC10m
2026-05-14 CXK352 - May 14, 22:40 UTCMay 14, 22:50 UTC10m
2026-05-14 CXK352 - May 14, 19:30 UTCMay 14, 19:40 UTC10m
2026-05-12 CXK352 - May 12, 16:10 UTCMay 12, 16:30 UTC20m
2026-05-11 CXK352 - May 11, 18:55 UTCMay 11, 19:10 UTC15m
2026-05-09 CXK352 - May 9, 22:34 UTCMay 9, 22:45 UTC10m
2026-05-09 CXK352 - May 9, 21:45 UTCMay 9, 21:55 UTC10m
2026-05-09 CXK352 - May 9, 00:05 UTCMay 9, 01:35 UTC1h 30m
2026-05-08 CXK352 - May 8, 19:20 UTCMay 8, 20:00 UTC40m
2026-05-08 CXK352 - May 8, 12:39 UTCMay 8, 13:40 UTC1h 0m
2026-05-07 CXK352 - May 7, 22:25 UTCMay 8, 00:05 UTC1h 39m
2026-05-07 CXK352 - May 7, 20:10 UTCMay 7, 21:00 UTC50m
2026-05-06 CXK352 - May 6, 22:35 UTCMay 7, 00:05 UTC1h 30m
2026-05-06 CXK352 - May 6, 19:15 UTCMay 6, 21:45 UTC2h 30m
2026-05-04 CXK352 - May 4, 20:10 UTCMay 4, 21:40 UTC1h 30m
2026-05-04 CXK352 - May 4, 14:35 UTCMay 4, 15:00 UTC25m

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 N2098A page for operator, model, and routing details .

Mode-S A1B6E3 frequently asked

What is Mode-S code A1B6E3?
A1B6E3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2098A.
Where is Mode-S A1B6E3 registered?
Mode-S code A1B6E3 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 A1B6E3 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1B6E3, octal 50333343, decimal 10,598,115.
What flights does A1B6E3 operate?
Mode-S A1B6E3 has broadcast 1 distinct callsign, including CXK352.