Apparatus

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sensors Mode-S transponder

A05DFE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N12234 · CESSNA 172 Skyhawk · operated by AMELIA REID AVIATION LLC

Hex
A05DFE
Octal
50056776
Decimal
10,509,822
Country
US
Tail
N12234
Type
C172
No current signal · last broadcast 9h ago
Flights observed
242
Distinct callsigns
1
Country
US
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S A05DFE.

Country allocation

The ICAO 24-bit address A05DFE 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
N12234 - 242 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N12234 - Jul 13, 22:45 UTCJul 13, 23:50 UTC1h 5m
2026-07-13 N12234 RHV → RHV Jul 13, 22:25 UTCJul 13, 22:30 UTC5m
2026-07-13 N12234 RHV → RHV Jul 13, 19:20 UTCJul 13, 20:05 UTC45m
2026-07-12 N12234 - Jul 12, 20:55 UTCJul 12, 21:35 UTC40m
2026-07-12 N12234 RHV → RHV Jul 12, 19:20 UTCJul 12, 20:01 UTC40m
2026-07-12 N12234 - Jul 12, 16:45 UTCJul 12, 17:45 UTC1h 0m
2026-07-11 N12234 RHV → RHV Jul 11, 23:05 UTCJul 12, 00:05 UTC1h 0m
2026-07-10 N12234 - Jul 10, 23:05 UTCJul 10, 23:45 UTC40m
2026-07-10 N12234 - Jul 10, 21:45 UTCJul 10, 22:25 UTC40m
2026-07-10 N12234 - Jul 10, 19:40 UTCJul 10, 20:50 UTC1h 10m
2026-07-09 N12234 RHV → RHV Jul 9, 22:50 UTCJul 9, 23:50 UTC1h 0m
2026-07-09 N12234 - Jul 9, 17:55 UTCJul 9, 19:35 UTC1h 40m
2026-07-09 N12234 - Jul 9, 03:30 UTCJul 9, 04:05 UTC35m
2026-07-08 N12234 RHV → RHV Jul 8, 22:50 UTCJul 9, 00:05 UTC1h 15m
2026-07-06 N12234 RHV → RHV Jul 6, 21:50 UTCJul 6, 23:25 UTC1h 35m
2026-07-06 N12234 RHV → RHV Jul 6, 20:45 UTCJul 6, 20:55 UTC10m
2026-07-06 N12234 RHV → RHV Jul 6, 19:55 UTCJul 6, 20:40 UTC45m
2026-07-06 N12234 - Jul 6, 18:00 UTCJul 6, 18:45 UTC45m
2026-07-06 N12234 RHV → RHV Jul 6, 00:50 UTCJul 6, 01:50 UTC1h 0m
2026-07-05 N12234 RHV → RHV Jul 5, 20:55 UTCJul 5, 21:35 UTC40m
2026-07-05 N12234 RHV → RHV Jul 5, 17:45 UTCJul 5, 18:50 UTC1h 5m
2026-07-04 N12234 RHV → RHV Jul 4, 16:45 UTCJul 4, 18:15 UTC1h 30m
2026-07-04 N12234 - Jul 4, 01:35 UTCJul 4, 01:50 UTC15m
2026-07-03 N12234 RHV → HLI Jul 3, 23:50 UTCJul 4, 00:40 UTC50m
2026-07-03 N12234 - Jul 3, 20:55 UTCJul 3, 21:50 UTC55m
2026-07-02 N12234 RHV → RHV Jul 2, 22:55 UTCJul 2, 23:50 UTC55m
2026-07-02 N12234 - Jul 2, 21:10 UTCJul 2, 21:55 UTC45m
2026-07-02 N12234 RHV → RHV Jul 2, 19:30 UTCJul 2, 19:55 UTC25m
2026-07-02 N12234 RHV → RHV Jul 2, 15:15 UTCJul 2, 17:00 UTC1h 45m
2026-07-01 N12234 RHV → RHV Jul 1, 00:50 UTCJul 1, 01:35 UTC45m
2026-06-30 N12234 RHV → RHV Jun 30, 22:00 UTCJun 30, 22:50 UTC50m
2026-06-30 N12234 RHV → RHV Jun 30, 20:05 UTCJun 30, 20:55 UTC50m
2026-06-30 N12234 RHV → RHV Jun 30, 17:25 UTCJun 30, 17:45 UTC20m
2026-06-30 N12234 RHV → RHV Jun 30, 16:40 UTCJun 30, 17:20 UTC40m
2026-06-29 N12234 - Jun 29, 22:15 UTCJun 30, 00:00 UTC1h 45m
2026-06-29 N12234 RHV → RHV Jun 29, 19:05 UTCJun 29, 19:35 UTC30m
2026-06-29 N12234 RHV → RHV Jun 29, 16:44 UTCJun 29, 17:59 UTC1h 15m
2026-06-29 N12234 - Jun 29, 01:39 UTCJun 29, 02:14 UTC35m
2026-06-29 N12234 RHV → RHV Jun 29, 01:20 UTCJun 29, 01:25 UTC5m
2026-06-28 N12234 RHV → RHV Jun 28, 23:44 UTCJun 29, 00:14 UTC30m
2026-06-28 N12234 RHV → RHV Jun 28, 21:10 UTCJun 28, 22:15 UTC1h 5m
2026-06-28 N12234 RHV → RHV Jun 28, 18:44 UTCJun 28, 19:40 UTC55m
2026-06-28 N12234 RHV → RHV Jun 28, 16:35 UTCJun 28, 17:39 UTC1h 5m
2026-06-27 N12234 RHV → RHV Jun 27, 22:55 UTCJun 27, 23:29 UTC35m
2026-06-27 N12234 RHV → RHV Jun 27, 21:40 UTCJun 27, 21:50 UTC10m
2026-06-27 N12234 RHV → RHV Jun 27, 20:44 UTCJun 27, 21:29 UTC45m
2026-06-27 N12234 RHV → RHV Jun 27, 15:30 UTCJun 27, 16:49 UTC1h 20m
2026-06-27 N12234 RHV → RHV Jun 27, 15:00 UTCJun 27, 15:14 UTC15m
2026-06-26 N12234 RHV → RHV Jun 26, 18:29 UTCJun 26, 19:09 UTC40m
2026-06-26 N12234 RHV → RHV Jun 26, 14:50 UTCJun 26, 15:29 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 N12234 page for operator, model, and routing details .

Mode-S A05DFE frequently asked

What is Mode-S code A05DFE?
A05DFE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N12234.
Where is Mode-S A05DFE registered?
Mode-S code A05DFE 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 A05DFE 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 A05DFE, octal 50056776, decimal 10,509,822.
What flights does A05DFE operate?
Mode-S A05DFE has broadcast 1 distinct callsign, including N12234.