Apparatus

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sensors Mode-S transponder

A23F27

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N244DA · CESSNA 172 Skyhawk · operated by ALCOTT JOHN M

Hex
A23F27
Octal
50437447
Decimal
10,632,999
Country
US
Tail
N244DA
Type
C172
No current signal · last broadcast 14h ago
Flights observed
90
Distinct callsigns
1
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S A23F27.

Country allocation

The ICAO 24-bit address A23F27 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
N244DA - 90 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N244DA OJC → OJC Jul 13, 17:55 UTCJul 13, 18:35 UTC40m
2026-07-11 N244DA OJC → OJC Jul 11, 23:50 UTCJul 12, 00:20 UTC30m
2026-07-11 N244DA OJC → OJC Jul 11, 23:40 UTCJul 11, 23:45 UTC5m
2026-07-11 N244DA OJC → OJC Jul 11, 20:35 UTCJul 11, 21:30 UTC55m
2026-07-09 N244DA OJC → OJC Jul 9, 22:50 UTCJul 9, 23:35 UTC45m
2026-07-09 N244DA OJC → OJC Jul 9, 21:10 UTCJul 9, 21:20 UTC10m
2026-07-09 N244DA OJC → OJC Jul 9, 20:35 UTCJul 9, 21:00 UTC25m
2026-07-09 N244DA OJC → OJC Jul 9, 15:30 UTCJul 9, 16:20 UTC50m
2026-07-08 N244DA OJC → OJC Jul 8, 19:35 UTCJul 8, 20:45 UTC1h 10m
2026-07-07 N244DA OJC → OJC Jul 7, 22:55 UTCJul 7, 23:55 UTC1h 0m
2026-07-07 N244DA OJC → OJC Jul 7, 15:45 UTCJul 7, 16:25 UTC40m
2026-07-06 N244DA - Jul 6, 18:10 UTCJul 6, 19:40 UTC1h 30m
2026-07-06 N244DA - Jul 6, 15:25 UTCJul 6, 16:50 UTC1h 25m
2026-07-03 N244DA - Jul 3, 22:30 UTCJul 3, 23:10 UTC40m
2026-07-03 N244DA - Jul 3, 15:05 UTCJul 3, 15:40 UTC35m
2026-06-27 N244DA OJC → OJC Jun 27, 19:34 UTCJun 27, 19:45 UTC10m
2026-06-25 N244DA OJC → OJC Jun 25, 18:00 UTCJun 25, 18:19 UTC20m
2026-06-25 N244DA OJC → OJC Jun 25, 14:39 UTCJun 25, 15:15 UTC35m
2026-06-25 N244DA OJC → OJC Jun 25, 02:54 UTCJun 25, 03:20 UTC25m
2026-06-24 N244DA OJC → OJC Jun 24, 14:55 UTCJun 24, 15:14 UTC20m
2026-06-23 N244DA OJC → OJC Jun 23, 22:55 UTCJun 23, 23:29 UTC35m
2026-06-23 N244DA - Jun 23, 20:29 UTCJun 23, 21:10 UTC40m
2026-06-23 N244DA OJC → OJC Jun 23, 15:59 UTCJun 23, 16:09 UTC10m
2026-06-23 N244DA OJC → OJC Jun 23, 15:24 UTCJun 23, 15:50 UTC25m
2026-06-22 N244DA - Jun 22, 17:04 UTCJun 22, 18:30 UTC1h 25m
2026-06-20 N244DA OJC → OJC Jun 20, 20:40 UTCJun 20, 21:25 UTC45m
2026-06-19 N244DA OJC → OJC Jun 19, 20:29 UTCJun 19, 21:19 UTC50m
2026-06-19 N244DA - Jun 19, 14:39 UTCJun 19, 15:19 UTC40m
2026-06-17 N244DA - Jun 17, 00:15 UTCJun 17, 00:35 UTC20m
2026-06-16 N244DA - Jun 16, 22:45 UTCJun 16, 23:05 UTC20m
2026-06-12 N244DA OJC → OJC Jun 12, 20:35 UTCJun 12, 21:25 UTC50m
2026-06-06 N244DA OJC → OJC Jun 6, 21:04 UTCJun 6, 21:30 UTC25m
2026-06-06 N244DA OJC → OJC Jun 6, 18:25 UTCJun 6, 18:45 UTC20m
2026-06-06 N244DA OJC → OJC Jun 6, 17:54 UTCJun 6, 18:09 UTC15m
2026-06-05 N244DA OJC → OJC Jun 5, 19:00 UTCJun 5, 19:50 UTC50m
2026-06-04 N244DA OJC → OJC Jun 4, 15:50 UTCJun 4, 16:25 UTC35m
2026-06-03 N244DA OJC → OJC Jun 3, 19:15 UTCJun 3, 20:45 UTC1h 30m
2026-06-03 N244DA - Jun 3, 16:55 UTCJun 3, 17:40 UTC45m
2026-06-02 N244DA OJC → OJC Jun 2, 22:40 UTCJun 3, 00:05 UTC1h 25m
2026-06-02 N244DA OJC → OJC Jun 2, 19:10 UTCJun 2, 20:20 UTC1h 10m
2026-06-02 N244DA OJC → OJC Jun 2, 16:25 UTCJun 2, 17:15 UTC50m
2026-06-01 N244DA - Jun 1, 16:30 UTCJun 1, 16:50 UTC20m
2026-06-01 N244DA - Jun 1, 15:20 UTCJun 1, 15:55 UTC35m
2026-05-31 N244DA OJC → OJC May 31, 22:40 UTCMay 31, 23:35 UTC55m
2026-05-31 N244DA OJC → OJC May 31, 20:40 UTCMay 31, 21:25 UTC45m
2026-05-31 N244DA OJC → OJC May 31, 18:25 UTCMay 31, 18:45 UTC20m
2026-05-31 N244DA - May 31, 17:40 UTCMay 31, 18:15 UTC35m
2026-05-28 N244DA - May 28, 00:05 UTCMay 28, 00:25 UTC20m
2026-05-27 N244DA - May 27, 22:20 UTCMay 27, 22:50 UTC30m
2026-05-27 N244DA - May 27, 19:05 UTCMay 27, 20:00 UTC55m

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 N244DA page for operator, model, and routing details .

Mode-S A23F27 frequently asked

What is Mode-S code A23F27?
A23F27 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N244DA.
Where is Mode-S A23F27 registered?
Mode-S code A23F27 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 A23F27 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A23F27, octal 50437447, decimal 10,632,999.
What flights does A23F27 operate?
Mode-S A23F27 has broadcast 1 distinct callsign, including N244DA.