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sensors Mode-S transponder

A9D71A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N733KJ · CESSNA 172 Skyhawk · operated by HIGH-SPEED AVIATION SERVICES LLC

Hex
A9D71A
Octal
52353432
Decimal
11,130,650
Country
US
Tail
N733KJ
Type
C172
No current signal · last broadcast 33m ago
Flights observed
218
Distinct callsigns
1
Country
US
Last broadcast
33m ago

Last known position

Most recent position reported by Mode-S A9D71A.

Country allocation

The ICAO 24-bit address A9D71A 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
N733KJ - 218 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N733KJ - Jul 14, 13:35 UTCJul 14, 14:05 UTC30m
2026-07-14 N733KJ - Jul 14, 12:25 UTCJul 14, 12:50 UTC25m
2026-07-14 N733KJ SPG → FXE Jul 14, 01:50 UTCJul 14, 03:30 UTC1h 40m
2026-07-13 N733KJ - Jul 13, 20:35 UTCJul 13, 22:20 UTC1h 45m
2026-07-12 N733KJ - Jul 12, 21:50 UTCJul 12, 22:50 UTC1h 0m
2026-07-12 N733KJ - Jul 12, 15:45 UTCJul 12, 16:50 UTC1h 5m
2026-07-12 N733KJ - Jul 12, 11:25 UTCJul 12, 13:10 UTC1h 45m
2026-07-11 N733KJ - Jul 11, 17:55 UTCJul 11, 18:45 UTC50m
2026-07-11 N733KJ - Jul 11, 14:10 UTCJul 11, 15:00 UTC50m
2026-07-11 N733KJ - Jul 11, 11:55 UTCJul 11, 12:55 UTC1h 0m
2026-07-11 N733KJ - Jul 11, 01:40 UTCJul 11, 02:25 UTC45m
2026-07-10 N733KJ - Jul 10, 22:10 UTCJul 10, 23:30 UTC1h 20m
2026-07-10 N733KJ - Jul 10, 20:40 UTCJul 10, 21:35 UTC55m
2026-07-10 N733KJ FXE → FXE Jul 10, 15:05 UTCJul 10, 16:50 UTC1h 45m
2026-07-10 N733KJ LNA → FXE Jul 10, 13:15 UTCJul 10, 13:50 UTC35m
2026-07-10 N733KJ - Jul 10, 12:15 UTCJul 10, 13:00 UTC45m
2026-07-10 N733KJ - Jul 10, 03:55 UTCJul 10, 04:05 UTC10m
2026-07-10 N733KJ - Jul 10, 00:55 UTCJul 10, 02:50 UTC1h 55m
2026-07-09 N733KJ - Jul 9, 19:45 UTCJul 9, 20:10 UTC25m
2026-07-09 N733KJ - Jul 9, 18:45 UTCJul 9, 19:05 UTC20m
2026-07-09 N733KJ - Jul 9, 15:10 UTCJul 9, 16:20 UTC1h 10m
2026-07-08 N733KJ - Jul 8, 22:45 UTCJul 8, 23:20 UTC35m
2026-07-08 N733KJ FXE → FXE Jul 8, 19:50 UTCJul 8, 21:20 UTC1h 30m
2026-07-08 N733KJ - Jul 8, 18:05 UTCJul 8, 19:00 UTC55m
2026-07-08 N733KJ - Jul 8, 12:05 UTCJul 8, 13:20 UTC1h 15m
2026-07-07 N733KJ - Jul 7, 21:50 UTCJul 7, 22:45 UTC55m
2026-07-07 N733KJ FXE → FXE Jul 7, 18:40 UTCJul 7, 19:50 UTC1h 10m
2026-07-07 N733KJ - Jul 7, 12:10 UTCJul 7, 13:20 UTC1h 10m
2026-07-06 N733KJ - Jul 6, 15:40 UTCJul 6, 16:20 UTC40m
2026-07-06 N733KJ - Jul 6, 12:30 UTCJul 6, 13:40 UTC1h 10m
2026-07-03 N733KJ - Jul 3, 20:30 UTCJul 3, 21:20 UTC50m
2026-07-03 N733KJ - Jul 3, 19:00 UTCJul 3, 19:45 UTC45m
2026-07-03 N733KJ FXE → FXE Jul 3, 11:20 UTCJul 3, 13:55 UTC2h 35m
2026-07-02 N733KJ LNA → FXE Jul 2, 20:50 UTCJul 2, 21:15 UTC25m
2026-07-02 N733KJ FXE → LNA Jul 2, 19:20 UTCJul 2, 20:45 UTC1h 25m
2026-06-30 N733KJ - Jun 30, 17:35 UTCJun 30, 18:10 UTC35m
2026-06-30 N733KJ - Jun 30, 16:25 UTCJun 30, 17:00 UTC35m
2026-06-30 N733KJ FXE → FXE Jun 30, 11:20 UTCJun 30, 13:40 UTC2h 20m
2026-06-29 N733KJ - Jun 29, 23:19 UTCJun 30, 00:35 UTC1h 15m
2026-06-29 N733KJ - Jun 29, 14:39 UTCJun 29, 17:24 UTC2h 45m
2026-06-29 N733KJ FXE → FXE Jun 29, 12:00 UTCJun 29, 13:39 UTC1h 40m
2026-06-28 N733KJ - Jun 28, 13:55 UTCJun 28, 14:25 UTC30m
2026-06-28 N733KJ - Jun 28, 12:55 UTCJun 28, 13:14 UTC20m
2026-06-27 N733KJ FXE → FXE Jun 27, 19:59 UTCJun 27, 20:19 UTC20m
2026-06-27 N733KJ - Jun 27, 18:45 UTCJun 27, 19:19 UTC35m
2026-06-27 N733KJ - Jun 27, 17:34 UTCJun 27, 18:04 UTC30m
2026-06-27 N733KJ - Jun 27, 11:55 UTCJun 27, 12:34 UTC40m
2026-06-26 N733KJ - Jun 26, 12:44 UTCJun 26, 13:30 UTC45m
2026-06-26 N733KJ FXE → FXE Jun 26, 10:30 UTCJun 26, 11:34 UTC1h 5m
2026-06-25 N733KJ - Jun 25, 23:49 UTCJun 26, 00:30 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 N733KJ page for operator, model, and routing details .

Mode-S A9D71A frequently asked

What is Mode-S code A9D71A?
A9D71A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N733KJ.
Where is Mode-S A9D71A registered?
Mode-S code A9D71A 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 A9D71A broadcasting right now?
No active broadcast right now. Last signal was 33m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9D71A, octal 52353432, decimal 11,130,650.
What flights does A9D71A operate?
Mode-S A9D71A has broadcast 1 distinct callsign, including N733KJ.