Apparatus

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sensors Mode-S transponder

A23E5B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2436N · CESSNA 172R Cutlass RG · operated by THUNDERBIRD AVIATION

Hex
A23E5B
Octal
50437133
Decimal
10,632,795
Country
US
Tail
N2436N
Type
C72R
No current signal · last broadcast 9h ago
Flights observed
116
Distinct callsigns
1
Country
US
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S A23E5B.

Country allocation

The ICAO 24-bit address A23E5B 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
N2436N - 116 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-14 N2436N - Jun 14, 17:15 UTCJun 14, 18:30 UTC1h 15m
2026-06-14 N2436N - Jun 14, 02:50 UTCJun 14, 03:15 UTC25m
2026-06-14 N2436N - Jun 14, 01:00 UTCJun 14, 02:15 UTC1h 15m
2026-06-13 N2436N - Jun 13, 18:50 UTCJun 13, 19:30 UTC40m
2026-06-13 N2436N - Jun 13, 16:55 UTCJun 13, 18:00 UTC1h 5m
2026-06-13 N2436N FCM → FCM Jun 13, 12:05 UTCJun 13, 13:05 UTC1h 0m
2026-06-12 N2436N FCM → FCM Jun 12, 19:15 UTCJun 12, 19:35 UTC20m
2026-06-12 N2436N - Jun 12, 16:30 UTCJun 12, 16:50 UTC20m
2026-06-12 N2436N - Jun 12, 13:35 UTCJun 12, 14:45 UTC1h 10m
2026-06-11 N2436N - Jun 11, 00:15 UTCJun 11, 02:00 UTC1h 45m
2026-06-10 N2436N - Jun 10, 22:20 UTCJun 10, 22:40 UTC20m
2026-06-10 N2436N - Jun 10, 20:50 UTCJun 10, 21:45 UTC55m
2026-06-10 N2436N - Jun 10, 16:30 UTCJun 10, 17:45 UTC1h 15m
2026-06-10 N2436N - Jun 10, 02:30 UTCJun 10, 03:15 UTC45m
2026-06-10 N2436N - Jun 10, 00:30 UTCJun 10, 01:55 UTC1h 25m
2026-06-09 N2436N FCM → FCM Jun 9, 18:20 UTCJun 9, 19:40 UTC1h 20m
2026-06-08 N2436N - Jun 8, 23:40 UTCJun 9, 01:10 UTC1h 30m
2026-06-07 N2436N - Jun 7, 17:15 UTCJun 7, 18:45 UTC1h 30m
2026-06-07 N2436N FCM → FCM Jun 7, 14:40 UTCJun 7, 15:50 UTC1h 10m
2026-06-07 N2436N - Jun 7, 03:55 UTCJun 7, 04:50 UTC55m
2026-06-07 N2436N - Jun 7, 01:24 UTCJun 7, 02:00 UTC35m
2026-06-06 N2436N - Jun 6, 23:55 UTCJun 7, 00:44 UTC50m
2026-06-06 N2436N - Jun 6, 21:40 UTCJun 6, 22:20 UTC40m
2026-06-06 N2436N - Jun 6, 20:10 UTCJun 6, 20:55 UTC45m
2026-06-06 N2436N - Jun 6, 16:34 UTCJun 6, 17:44 UTC1h 10m
2026-06-03 N2436N - Jun 3, 16:15 UTCJun 3, 17:30 UTC1h 15m
2026-06-03 N2436N - Jun 3, 14:05 UTCJun 3, 15:10 UTC1h 5m
2026-06-03 N2436N - Jun 3, 00:40 UTCJun 3, 00:55 UTC15m
2026-06-02 N2436N FCM → FCM Jun 2, 23:25 UTCJun 2, 23:55 UTC30m
2026-06-02 N2436N - Jun 2, 22:15 UTCJun 2, 22:40 UTC25m
2026-06-02 N2436N - Jun 2, 19:30 UTCJun 2, 19:45 UTC15m
2026-06-02 N2436N - Jun 2, 17:40 UTCJun 2, 19:00 UTC1h 20m
2026-06-02 N2436N - Jun 2, 15:55 UTCJun 2, 16:45 UTC50m
2026-06-02 N2436N - Jun 2, 13:10 UTCJun 2, 14:35 UTC1h 25m
2026-06-02 N2436N - Jun 2, 04:45 UTCJun 2, 05:30 UTC45m
2026-06-02 N2436N - Jun 2, 02:35 UTCJun 2, 03:25 UTC50m
2026-06-02 N2436N - Jun 2, 00:25 UTCJun 2, 01:15 UTC50m
2026-06-01 N2436N - Jun 1, 19:25 UTCJun 1, 19:40 UTC15m
2026-05-31 N2436N - May 31, 13:40 UTCMay 31, 14:40 UTC1h 0m
2026-05-29 N2436N FCM → FCM May 29, 21:55 UTCMay 29, 23:40 UTC1h 45m
2026-05-29 N2436N - May 29, 01:10 UTCMay 29, 01:55 UTC45m
2026-05-28 N2436N - May 28, 22:40 UTCMay 29, 00:15 UTC1h 35m
2026-05-28 N2436N FCM → FCM May 28, 20:40 UTCMay 28, 21:55 UTC1h 15m
2026-05-28 N2436N - May 28, 17:45 UTCMay 28, 18:45 UTC1h 0m
2026-05-28 N2436N FCM → FCM May 28, 14:45 UTCMay 28, 15:25 UTC40m
2026-05-27 N2436N - May 27, 23:50 UTCMay 28, 00:10 UTC20m
2026-05-27 N2436N - May 27, 22:45 UTCMay 27, 23:10 UTC25m
2026-05-27 N2436N - May 27, 14:55 UTCMay 27, 16:25 UTC1h 30m
2026-05-26 N2436N - May 26, 23:29 UTCMay 26, 23:49 UTC20m
2026-05-26 N2436N - May 26, 22:29 UTCMay 26, 22:59 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 N2436N page for operator, model, and routing details .

Mode-S A23E5B frequently asked

What is Mode-S code A23E5B?
A23E5B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2436N.
Where is Mode-S A23E5B registered?
Mode-S code A23E5B 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 A23E5B broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A23E5B, octal 50437133, decimal 10,632,795.
What flights does A23E5B operate?
Mode-S A23E5B has broadcast 1 distinct callsign, including N2436N.