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sensors Mode-S transponder

AACA04

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N79453 · CESSNA 172 Skyhawk · operated by ZIMMER JAMES E

Hex
AACA04
Octal
52545004
Decimal
11,192,836
Country
US
Tail
N79453
Type
C172
No current signal · last broadcast Jul 26, 19:55 UTC
Flights observed
50
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 19:55 UTC

Last known position

Most recent position reported by Mode-S AACA04.

Country allocation

The ICAO 24-bit address AACA04 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
N79453 - 50 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N79453 - Jul 26, 19:05 UTCJul 26, 19:55 UTC50m
2026-07-20 N79453 - Jul 20, 04:25 UTCJul 20, 04:35 UTC10m
2026-07-20 N79453 - Jul 20, 03:40 UTCJul 20, 03:50 UTC10m
2026-07-20 N79453 - Jul 20, 01:45 UTCJul 20, 03:05 UTC1h 20m
2026-07-18 N79453 - Jul 18, 19:25 UTCJul 18, 20:45 UTC1h 20m
2026-07-18 N79453 - Jul 18, 18:15 UTCJul 18, 18:35 UTC20m
2026-07-18 N79453 - Jul 18, 17:25 UTCJul 18, 17:35 UTC10m
2026-07-17 N79453 - Jul 17, 21:30 UTCJul 17, 22:00 UTC30m
2026-07-17 N79453 - Jul 17, 17:09 UTCJul 17, 17:35 UTC25m
2026-07-03 N79453 - Jul 3, 22:05 UTCJul 3, 22:40 UTC35m
2026-07-03 N79453 - Jul 3, 19:35 UTCJul 3, 19:45 UTC10m
2026-07-03 N79453 - Jul 3, 17:00 UTCJul 3, 18:05 UTC1h 5m
2026-07-02 N79453 - Jul 2, 22:15 UTCJul 2, 23:00 UTC45m
2026-07-02 N79453 - Jul 2, 16:00 UTCJul 2, 16:55 UTC55m
2026-06-27 N79453 - Jun 27, 20:14 UTCJun 27, 21:15 UTC1h 0m
2026-06-27 N79453 - Jun 27, 15:24 UTCJun 27, 16:10 UTC45m
2026-06-26 N79453 - Jun 26, 00:55 UTCJun 26, 02:05 UTC1h 10m
2026-06-25 N79453 - Jun 25, 21:25 UTCJun 25, 22:10 UTC45m
2026-06-21 N79453 - Jun 21, 22:10 UTCJun 21, 23:14 UTC1h 5m
2026-06-19 N79453 - Jun 19, 23:25 UTCJun 20, 00:24 UTC1h 0m
2026-06-16 N79453 - Jun 16, 03:20 UTCJun 16, 04:20 UTC1h 0m
2026-06-15 N79453 - Jun 15, 01:15 UTCJun 15, 02:24 UTC1h 10m
2026-06-12 N79453 - Jun 12, 22:05 UTCJun 12, 22:50 UTC45m
2026-06-11 N79453 - Jun 11, 21:00 UTCJun 11, 22:05 UTC1h 5m
2026-06-09 N79453 - Jun 9, 02:20 UTCJun 9, 03:30 UTC1h 10m
2026-06-08 N79453 - Jun 8, 21:50 UTCJun 8, 22:50 UTC1h 0m
2026-06-05 N79453 - Jun 5, 04:55 UTCJun 5, 08:05 UTC3h 10m
2026-06-03 N79453 - Jun 3, 07:25 UTCJun 3, 07:45 UTC20m
2026-06-03 N79453 - Jun 3, 03:15 UTCJun 3, 03:30 UTC15m
2026-06-02 N79453 - Jun 2, 17:55 UTCJun 2, 18:25 UTC30m
2026-06-01 N79453 - Jun 1, 22:10 UTCJun 1, 22:30 UTC20m
2026-06-01 N79453 - Jun 1, 21:10 UTCJun 1, 21:30 UTC20m
2026-06-01 N79453 - Jun 1, 19:10 UTCJun 1, 19:20 UTC10m
2026-06-01 N79453 - Jun 1, 00:05 UTCJun 1, 01:25 UTC1h 20m
2026-05-30 N79453 - May 30, 00:30 UTCMay 30, 03:15 UTC2h 45m
2026-05-22 N79453 - May 22, 23:10 UTCMay 22, 23:25 UTC15m
2026-05-20 N79453 - May 20, 23:50 UTCMay 21, 01:00 UTC1h 10m
2026-05-14 N79453 - May 14, 23:40 UTCMay 14, 23:50 UTC10m
2026-05-12 N79453 - May 12, 22:15 UTCMay 12, 22:35 UTC20m
2026-05-12 N79453 - May 12, 20:40 UTCMay 12, 21:20 UTC40m
2026-05-12 N79453 - May 12, 19:35 UTCMay 12, 20:05 UTC30m
2026-05-12 N79453 - May 12, 18:45 UTCMay 12, 19:05 UTC20m
2026-05-10 N79453 - May 10, 22:49 UTCMay 10, 23:35 UTC45m
2026-05-09 N79453 - May 9, 00:30 UTCMay 9, 01:25 UTC55m
2026-05-03 N79453 - May 3, 21:00 UTCMay 3, 21:44 UTC45m
2026-05-03 N79453 - May 3, 18:05 UTCMay 3, 18:25 UTC20m
2026-05-01 N79453 - May 1, 21:55 UTCMay 1, 22:40 UTC45m
2026-04-17 N79453 - Apr 17, 19:25 UTCApr 17, 19:35 UTC10m
2026-04-16 N79453 - Apr 16, 22:20 UTCApr 16, 22:50 UTC30m
2026-04-13 N79453 - Apr 13, 23:15 UTCApr 13, 23:40 UTC25m

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 N79453 page for operator, model, and routing details .

Mode-S AACA04 frequently asked

What is Mode-S code AACA04?
AACA04 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N79453.
Where is Mode-S AACA04 registered?
Mode-S code AACA04 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 AACA04 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AACA04, octal 52545004, decimal 11,192,836.
What flights does AACA04 operate?
Mode-S AACA04 has broadcast 1 distinct callsign, including N79453.