Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A4CE28

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N409AZ · BOEING 767-300 · operated by CARGO AIRCRAFT MANAGEMENT INC

Hex
A4CE28
Octal
51147050
Decimal
10,800,680
Country
US
Tail
N409AZ
Type
B763
No current signal · last broadcast Jul 26, 21:05 UTC
Flights observed
237
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:05 UTC

Last known position

Most recent position reported by Mode-S A4CE28.

Country allocation

The ICAO 24-bit address A4CE28 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 20 distinct

Callsign Airline Flights Last seen
ATN4300 - 8 2026-06-22
ATN3355 Air Transport International 6 2026-06-25
ATN3332 - 6 2026-06-25
ATN4303 Air Transport International 5 2026-06-06
ATN3345 - 5 2026-06-22
ATN3326 Air Transport International 5 2026-06-12
ATN3324 - 5 2026-06-27
ATN3319 - 5 2026-06-25
ATN3306 Air Transport International 5 2026-05-29
ATN9703 - 4 2026-07-12
ATN3397 - 4 2026-07-12
ATN3395 - 4 2026-07-13
ATN3390 - 4 2026-07-20
ATN3373 - 4 2026-07-19
ATN3371 - 4 2026-06-30
ATN3351 - 4 2026-07-12
ATN3348 Air Transport International 4 2026-07-25
ATN3304 - 4 2026-07-16
ATN3302 - 4 2026-07-06
ATN4315 - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ATN3315 CVG → JFK Jul 26, 19:00 UTCJul 26, 21:05 UTC2h 5m
2026-07-25 ATN3348 SFO → AFW Jul 25, 08:55 UTCJul 25, 10:40 UTC1h 45m
2026-07-25 ATN3331 RFD → ABE Jul 25, 05:10 UTCJul 25, 06:05 UTC55m
2026-07-24 ATN6745 RFD → CVG Jul 24, 02:35 UTCJul 24, 03:40 UTC1h 5m
2026-07-23 ATN6722 CVG → ILN Jul 23, 07:35 UTCJul 23, 08:20 UTC45m
2026-07-20 ATN3390 - Jul 20, 05:00 UTCJul 20, 06:25 UTC1h 25m
2026-07-19 ATN3373 - Jul 19, 22:25 UTCJul 19, 23:15 UTC50m
2026-07-19 ATN3358 - Jul 19, 18:55 UTCJul 19, 19:55 UTC1h 0m
2026-07-18 ATN3311 DEN → CVG Jul 18, 10:00 UTCJul 18, 12:15 UTC2h 15m
2026-07-18 ATN3321 - Jul 18, 05:10 UTCJul 18, 07:25 UTC2h 15m
2026-07-17 ATN3346 - Jul 17, 14:00 UTCJul 17, 18:05 UTC4h 5m
2026-07-17 ATN3300 - Jul 17, 05:25 UTCJul 17, 08:20 UTC2h 55m
2026-07-16 ATN3353 - Jul 16, 23:59 UTCJul 17, 02:34 UTC2h 35m
2026-07-16 ATN3304 FTW → ONT Jul 16, 19:14 UTCJul 16, 21:45 UTC2h 30m
2026-07-15 ATN3348 ATL → AFW Jul 15, 18:55 UTCJul 15, 20:45 UTC1h 50m
2026-07-15 ATN6750 - Jul 15, 06:55 UTCJul 15, 08:15 UTC1h 20m
2026-07-14 ATN3387 - Jul 14, 08:30 UTCJul 14, 13:15 UTC4h 45m
2026-07-14 ATN3399 - Jul 14, 02:25 UTCJul 14, 04:40 UTC2h 15m
2026-07-13 ATN3379 - Jul 13, 18:00 UTCJul 13, 20:55 UTC2h 55m
2026-07-13 ATN3316 - Jul 13, 12:40 UTCJul 13, 15:40 UTC3h 0m
2026-07-13 ATN3395 - Jul 13, 04:15 UTCJul 13, 06:20 UTC2h 5m
2026-07-12 ATN3397 - Jul 12, 23:25 UTCJul 13, 01:45 UTC2h 20m
2026-07-12 ATN9703 - Jul 12, 15:25 UTCJul 12, 18:20 UTC2h 55m
2026-07-12 ATN3351 SEA → ANC Jul 12, 10:05 UTCJul 12, 13:05 UTC3h 0m
2026-07-12 ATN3328 - Jul 12, 01:25 UTCJul 12, 05:05 UTC3h 40m
2026-07-11 ATN3389 CVG → IAH Jul 11, 18:10 UTCJul 11, 21:10 UTC3h 0m
2026-07-11 ATN3395 DEN → SEA Jul 11, 06:20 UTCJul 11, 08:35 UTC2h 15m
2026-07-10 ATN3397 - Jul 10, 23:45 UTCJul 11, 01:45 UTC2h 0m
2026-07-10 ATN9703 - Jul 10, 15:30 UTCJul 10, 18:30 UTC3h 0m
2026-07-10 ATN3351 - Jul 10, 10:05 UTCJul 10, 12:55 UTC2h 50m
2026-07-10 ATN3395 - Jul 10, 05:00 UTCJul 10, 07:10 UTC2h 10m
2026-07-10 ATN3397 - Jul 10, 00:25 UTCJul 10, 02:30 UTC2h 5m
2026-07-09 ATN9703 ANC → SEA Jul 9, 15:30 UTCJul 9, 18:20 UTC2h 50m
2026-07-09 ATN3351 SEA → ANC Jul 9, 10:00 UTCJul 9, 13:10 UTC3h 10m
2026-07-09 ATN3395 - Jul 9, 05:00 UTCJul 9, 07:15 UTC2h 15m
2026-07-08 ATN3397 - Jul 8, 23:40 UTCJul 9, 01:55 UTC2h 15m
2026-07-08 ATN9703 - Jul 8, 15:25 UTCJul 8, 18:10 UTC2h 45m
2026-07-08 ATN3351 - Jul 8, 10:10 UTCJul 8, 13:25 UTC3h 15m
2026-07-07 ATN3337 - Jul 7, 06:40 UTCJul 7, 08:35 UTC1h 55m
2026-07-06 ATN3363 - Jul 6, 20:00 UTCJul 6, 21:50 UTC1h 50m
2026-07-06 ATN3340 - Jul 6, 15:15 UTCJul 6, 17:15 UTC2h 0m
2026-07-06 ATN3302 - Jul 6, 05:05 UTCJul 6, 07:05 UTC2h 0m
2026-07-04 ATN4315 - Jul 4, 04:50 UTCJul 4, 05:45 UTC55m
2026-07-04 ATN6715 - Jul 4, 01:35 UTCJul 4, 02:00 UTC25m
2026-07-02 ATN6780 AFW → CVG Jul 2, 10:35 UTCJul 2, 11:10 UTC35m
2026-07-01 ATN3356 - Jul 1, 02:00 UTCJul 1, 03:05 UTC1h 5m
2026-06-30 ATN3323 - Jun 30, 15:20 UTCJun 30, 19:05 UTC3h 45m
2026-06-30 ATN3313 - Jun 30, 07:30 UTCJun 30, 12:20 UTC4h 50m
2026-06-30 ATN3371 - Jun 30, 04:30 UTCJun 30, 04:45 UTC15m
2026-06-29 ATN3371 - Jun 29, 21:09 UTCJun 29, 21:50 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 N409AZ page for operator, model, and routing details .

Mode-S A4CE28 frequently asked

What is Mode-S code A4CE28?
A4CE28 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N409AZ.
Where is Mode-S A4CE28 registered?
Mode-S code A4CE28 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 A4CE28 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4CE28, octal 51147050, decimal 10,800,680.
What flights does A4CE28 operate?
Mode-S A4CE28 has broadcast 20 distinct callsigns, including ATN4300, ATN3355, ATN3332, ATN4303, ATN3345.