Apparatus

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sensors Mode-S transponder

A23EA5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2438S · CESSNA 172R Cutlass RG · operated by MID-ISLAND AIR SERVICE INC

Hex
A23EA5
Octal
50437245
Decimal
10,632,869
Country
US
Tail
N2438S
Type
C72R
No current signal · last broadcast 11d ago
Flights observed
126
Distinct callsigns
1
Country
US
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S A23EA5.

Country allocation

The ICAO 24-bit address A23EA5 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
N2438S - 126 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N2438S - Jul 26, 15:40 UTCJul 26, 16:55 UTC1h 15m
2026-07-26 N2438S - Jul 26, 11:20 UTCJul 26, 11:50 UTC30m
2026-07-26 N2438S - Jul 26, 10:00 UTCJul 26, 10:25 UTC25m
2026-07-24 N2438S WSH → WSH Jul 24, 19:20 UTCJul 24, 19:55 UTC35m
2026-07-24 N2438S - Jul 24, 16:50 UTCJul 24, 17:45 UTC55m
2026-07-24 N2438S - Jul 24, 01:15 UTCJul 24, 02:40 UTC1h 25m
2026-07-23 N2438S - Jul 23, 19:45 UTCJul 23, 20:00 UTC15m
2026-07-23 N2438S - Jul 23, 17:20 UTCJul 23, 19:00 UTC1h 40m
2026-07-23 N2438S CTO → ISP Jul 23, 13:55 UTCJul 23, 14:10 UTC15m
2026-07-22 N2438S WSH → WSH Jul 22, 20:30 UTCJul 22, 21:40 UTC1h 10m
2026-07-20 N2438S WSH → WSH Jul 20, 16:45 UTCJul 20, 17:50 UTC1h 5m
2026-07-20 N2438S - Jul 20, 14:50 UTCJul 20, 15:40 UTC50m
2026-07-20 N2438S WSH → WSH Jul 20, 01:35 UTCJul 20, 03:25 UTC1h 50m
2026-07-19 N2438S WSH → WSH Jul 19, 12:30 UTCJul 19, 13:30 UTC1h 0m
2026-07-17 N2438S - Jul 17, 14:35 UTCJul 17, 15:44 UTC1h 10m
2026-07-14 N2438S WSH → WSH Jul 14, 15:50 UTCJul 14, 16:45 UTC55m
2026-07-14 N2438S - Jul 14, 12:55 UTCJul 14, 14:25 UTC1h 30m
2026-07-14 N2438S - Jul 14, 01:35 UTCJul 14, 02:20 UTC45m
2026-07-13 N2438S - Jul 13, 16:30 UTCJul 13, 16:50 UTC20m
2026-07-13 N2438S - Jul 13, 15:25 UTCJul 13, 15:55 UTC30m
2026-07-13 N2438S WSH → WSH Jul 13, 13:45 UTCJul 13, 14:30 UTC45m
2026-07-12 N2438S - Jul 12, 14:20 UTCJul 12, 15:35 UTC1h 15m
2026-07-10 N2438S - Jul 10, 14:20 UTCJul 10, 15:25 UTC1h 5m
2026-07-09 N2438S WSH → WSH Jul 9, 18:20 UTCJul 9, 19:30 UTC1h 10m
2026-07-09 N2438S WSH → WSH Jul 9, 15:35 UTCJul 9, 16:50 UTC1h 15m
2026-07-09 N2438S - Jul 9, 13:40 UTCJul 9, 14:25 UTC45m
2026-07-08 N2438S - Jul 8, 16:35 UTCJul 8, 18:30 UTC1h 55m
2026-07-08 N2438S - Jul 8, 15:35 UTCJul 8, 16:15 UTC40m
2026-07-03 N2438S WSH → WSH Jul 3, 01:25 UTCJul 3, 01:55 UTC30m
2026-06-30 N2438S WSH → WSH Jun 30, 17:35 UTCJun 30, 21:50 UTC4h 15m
2026-06-24 N2438S WSH → WSH Jun 24, 14:55 UTCJun 24, 16:19 UTC1h 25m
2026-06-24 N2438S - Jun 24, 12:30 UTCJun 24, 13:54 UTC1h 25m
2026-06-21 N2438S WSH → WSH Jun 21, 14:54 UTCJun 21, 15:34 UTC40m
2026-06-19 N2438S - Jun 19, 12:34 UTCJun 19, 13:29 UTC55m
2026-06-17 N2438S WSH → WSH Jun 17, 19:10 UTCJun 17, 21:30 UTC2h 20m
2026-06-17 N2438S - Jun 17, 17:05 UTCJun 17, 17:45 UTC40m
2026-06-17 N2438S - Jun 17, 15:05 UTCJun 17, 15:50 UTC45m
2026-06-17 N2438S - Jun 17, 12:50 UTCJun 17, 13:45 UTC55m
2026-06-17 N2438S WSH → WSH Jun 17, 00:35 UTCJun 17, 02:10 UTC1h 35m
2026-06-16 N2438S WSH → WSH Jun 16, 17:30 UTCJun 16, 18:20 UTC50m
2026-06-16 N2438S WSH → WSH Jun 16, 13:15 UTCJun 16, 14:15 UTC1h 0m
2026-06-13 N2438S WSH → WSH Jun 13, 19:00 UTCJun 13, 21:30 UTC2h 30m
2026-06-13 N2438S - Jun 13, 16:30 UTCJun 13, 17:45 UTC1h 15m
2026-06-13 N2438S - Jun 13, 15:00 UTCJun 13, 15:35 UTC35m
2026-06-12 N2438S WSH → WSH Jun 12, 15:35 UTCJun 12, 16:25 UTC50m
2026-06-12 N2438S - Jun 12, 13:25 UTCJun 12, 14:45 UTC1h 20m
2026-06-11 N2438S - Jun 11, 15:35 UTCJun 11, 17:40 UTC2h 5m
2026-06-10 N2438S - Jun 10, 01:40 UTCJun 10, 02:00 UTC20m
2026-06-08 N2438S - Jun 8, 21:00 UTCJun 8, 22:00 UTC1h 0m
2026-06-07 N2438S - Jun 7, 14:20 UTCJun 7, 15:00 UTC40m

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 N2438S page for operator, model, and routing details .

Mode-S A23EA5 frequently asked

What is Mode-S code A23EA5?
A23EA5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2438S.
Where is Mode-S A23EA5 registered?
Mode-S code A23EA5 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 A23EA5 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A23EA5, octal 50437245, decimal 10,632,869.
What flights does A23EA5 operate?
Mode-S A23EA5 has broadcast 1 distinct callsign, including N2438S.