Apparatus

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sensors Mode-S transponder

A749D9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N569RJ · CESSNA 172 Skyhawk · operated by NATIONAL TRAINING I LLC

Hex
A749D9
Octal
51644731
Decimal
10,963,417
Country
US
Tail
N569RJ
Type
C172
No current signal · last broadcast 3h ago
Flights observed
96
Distinct callsigns
1
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A749D9.

Country allocation

The ICAO 24-bit address A749D9 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
CXK448 - 96 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CXK448 SAC → SAC May 30, 13:30 UTCMay 30, 13:40 UTC10m
2026-05-29 CXK448 SAC → SAC May 29, 23:10 UTCMay 30, 01:25 UTC2h 15m
2026-05-28 CXK448 SAC → SAC May 28, 20:40 UTCMay 28, 22:05 UTC1h 25m
2026-05-27 CXK448 HWD → SAC May 27, 19:25 UTCMay 27, 20:05 UTC40m
2026-05-27 CXK448 - May 27, 18:05 UTCMay 27, 18:55 UTC50m
2026-05-26 CXK448 SAC → SAC May 26, 21:09 UTCMay 26, 21:59 UTC50m
2026-05-25 CXK448 SAC → SAC May 25, 22:40 UTCMay 25, 23:49 UTC1h 10m
2026-05-25 CXK448 - May 25, 20:24 UTCMay 25, 21:40 UTC1h 15m
2026-05-24 CXK448 - May 24, 00:00 UTCMay 24, 01:25 UTC1h 25m
2026-05-23 CXK448 SAC → SAC May 23, 19:35 UTCMay 23, 22:40 UTC3h 5m
2026-05-22 CXK448 SAC → SAC May 22, 16:50 UTCMay 22, 18:15 UTC1h 25m
2026-05-22 CXK448 SAC → SAC May 22, 16:30 UTCMay 22, 16:40 UTC10m
2026-05-21 CXK448 - May 21, 21:15 UTCMay 21, 22:10 UTC55m
2026-05-21 CXK448 SAC → SAC May 21, 14:25 UTCMay 21, 14:35 UTC10m
2026-05-20 CXK448 SAC → SAC May 20, 23:10 UTCMay 21, 01:15 UTC2h 5m
2026-05-15 CXK448 SAC → SAC May 15, 00:10 UTCMay 15, 00:25 UTC15m
2026-05-14 CXK448 SAC → SAC May 14, 23:35 UTCMay 14, 23:45 UTC10m
2026-05-14 CXK448 SAC → SAC May 14, 23:20 UTCMay 14, 23:30 UTC10m
2026-05-14 CXK448 - May 14, 14:55 UTCMay 14, 18:00 UTC3h 5m
2026-05-13 CXK448 - May 13, 15:00 UTCMay 13, 16:50 UTC1h 50m
2026-05-13 CXK448 - May 13, 14:45 UTCMay 13, 14:55 UTC10m
2026-05-13 CXK448 - May 13, 14:05 UTCMay 13, 14:30 UTC25m
2026-05-12 CXK448 SAC → SAC May 12, 23:10 UTCMay 13, 02:00 UTC2h 50m
2026-05-12 CXK448 SAC → SAC May 12, 19:25 UTCMay 12, 19:50 UTC25m
2026-05-12 CXK448 - May 12, 19:05 UTCMay 12, 19:15 UTC10m
2026-05-12 CXK448 SAC → SAC May 12, 18:20 UTCMay 12, 18:55 UTC35m
2026-05-12 CXK448 SAC → SAC May 12, 18:10 UTCMay 12, 18:15 UTC5m
2026-05-12 CXK448 - May 12, 15:25 UTCMay 12, 15:35 UTC10m
2026-05-12 CXK448 SAC → SAC May 12, 15:01 UTCMay 12, 15:10 UTC10m
2026-05-11 CXK448 - May 11, 21:00 UTCMay 11, 22:35 UTC1h 34m
2026-05-11 CXK448 SAC → SAC May 11, 17:15 UTCMay 11, 19:25 UTC2h 10m
2026-05-11 CXK448 SAC → SAC May 11, 15:05 UTCMay 11, 15:10 UTC5m
2026-05-11 CXK448 SAC → SAC May 11, 14:00 UTCMay 11, 14:05 UTC5m
2026-05-09 CXK448 - May 9, 18:10 UTCMay 9, 19:55 UTC1h 45m
2026-05-08 CXK448 - May 8, 23:50 UTCMay 9, 01:40 UTC1h 50m
2026-05-08 CXK448 SAC → SAC May 8, 20:55 UTCMay 8, 22:25 UTC1h 30m
2026-05-08 CXK448 - May 8, 00:49 UTCMay 8, 01:45 UTC55m
2026-05-07 CXK448 - May 7, 22:25 UTCMay 7, 23:59 UTC1h 34m
2026-05-07 CXK448 SAC → SAC May 7, 17:45 UTCMay 7, 19:20 UTC1h 35m
2026-05-07 CXK448 - May 7, 03:10 UTCMay 7, 03:35 UTC25m
2026-05-07 CXK448 - May 7, 02:00 UTCMay 7, 03:00 UTC1h 0m
2026-05-06 CXK448 SAC → SAC May 6, 16:50 UTCMay 6, 18:45 UTC1h 55m
2026-05-05 CXK448 - May 5, 23:25 UTCMay 6, 01:10 UTC1h 45m
2026-05-05 CXK448 SAC → SAC May 5, 20:50 UTCMay 5, 21:10 UTC20m
2026-05-05 CXK448 - May 5, 19:20 UTCMay 5, 20:45 UTC1h 25m
2026-05-04 CXK448 SAC → SAC May 4, 15:05 UTCMay 4, 16:40 UTC1h 35m
2026-05-03 CXK448 SAC → SAC May 3, 17:10 UTCMay 3, 18:30 UTC1h 20m
2026-05-02 CXK448 - May 2, 23:25 UTCMay 3, 01:15 UTC1h 50m
2026-05-02 CXK448 SAC → SAC May 2, 21:00 UTCMay 2, 21:50 UTC50m
2026-05-02 CXK448 - May 2, 19:20 UTCMay 2, 19:50 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 N569RJ page for operator, model, and routing details .

Mode-S A749D9 frequently asked

What is Mode-S code A749D9?
A749D9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N569RJ.
Where is Mode-S A749D9 registered?
Mode-S code A749D9 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 A749D9 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A749D9, octal 51644731, decimal 10,963,417.
What flights does A749D9 operate?
Mode-S A749D9 has broadcast 1 distinct callsign, including CXK448.