Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA0439

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7443T · CESSNA 172 Skyhawk · operated by GUARNO ADAM C

Hex
AA0439
Octal
52402071
Decimal
11,142,201
Country
US
Tail
N7443T
Type
C172
No current signal · last broadcast 21h ago
Flights observed
78
Distinct callsigns
1
Country
US
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S AA0439.

Country allocation

The ICAO 24-bit address AA0439 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
N7443T - 78 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-28 N7443T - Jun 28, 21:50 UTCJun 29, 01:20 UTC3h 30m
2026-06-28 N7443T - Jun 28, 18:34 UTCJun 28, 20:50 UTC2h 15m
2026-06-28 N7443T - Jun 28, 16:09 UTCJun 28, 17:30 UTC1h 20m
2026-06-28 N7443T - Jun 28, 02:25 UTCJun 28, 02:49 UTC25m
2026-06-28 N7443T - Jun 28, 01:04 UTCJun 28, 01:25 UTC20m
2026-06-27 N7443T - Jun 27, 23:04 UTCJun 27, 23:34 UTC30m
2026-06-27 N7443T - Jun 27, 22:04 UTCJun 27, 22:20 UTC15m
2026-06-26 N7443T - Jun 26, 23:30 UTCJun 27, 00:39 UTC1h 10m
2026-06-26 N7443T - Jun 26, 21:50 UTCJun 26, 22:49 UTC1h 0m
2026-06-26 N7443T ECP → ECP Jun 26, 00:20 UTCJun 26, 02:54 UTC2h 35m
2026-06-24 N7443T - Jun 24, 00:40 UTCJun 24, 02:20 UTC1h 40m
2026-06-23 N7443T - Jun 23, 22:34 UTCJun 23, 23:29 UTC55m
2026-06-23 N7443T - Jun 23, 20:49 UTCJun 23, 21:29 UTC40m
2026-06-23 N7443T - Jun 23, 17:09 UTCJun 23, 17:59 UTC50m
2026-06-21 N7443T - Jun 21, 14:19 UTCJun 21, 14:34 UTC15m
2026-06-16 N7443T - Jun 16, 01:25 UTCJun 16, 02:15 UTC50m
2026-06-16 N7443T - Jun 16, 00:15 UTCJun 16, 00:35 UTC20m
2026-06-09 N7443T - Jun 9, 22:00 UTCJun 9, 22:20 UTC20m
2026-06-08 N7443T - Jun 8, 19:25 UTCJun 8, 21:35 UTC2h 10m
2026-06-08 N7443T - Jun 8, 15:50 UTCJun 8, 18:40 UTC2h 50m
2026-06-07 N7443T - Jun 7, 16:10 UTCJun 7, 17:20 UTC1h 10m
2026-06-05 N7443T - Jun 5, 16:05 UTCJun 5, 20:10 UTC4h 5m
2026-06-04 N7443T - Jun 4, 15:30 UTCJun 4, 15:45 UTC15m
2026-05-29 N7443T - May 29, 01:45 UTCMay 29, 02:50 UTC1h 5m
2026-05-29 N7443T - May 29, 00:15 UTCMay 29, 01:10 UTC55m
2026-05-28 N7443T - May 28, 02:10 UTCMay 28, 02:20 UTC10m
2026-05-27 N7443T - May 27, 22:00 UTCMay 28, 01:20 UTC3h 20m
2026-05-27 N7443T - May 27, 20:55 UTCMay 27, 21:25 UTC30m
2026-05-27 N7443T - May 27, 01:39 UTCMay 27, 02:49 UTC1h 10m
2026-05-26 N7443T - May 26, 23:45 UTCMay 27, 00:00 UTC15m
2026-05-24 N7443T - May 24, 01:20 UTCMay 24, 01:40 UTC20m
2026-05-23 N7443T - May 23, 23:55 UTCMay 24, 00:45 UTC50m
2026-05-21 N7443T - May 21, 23:50 UTCMay 22, 02:35 UTC2h 45m
2026-05-21 N7443T - May 21, 21:35 UTCMay 21, 23:10 UTC1h 35m
2026-05-20 N7443T - May 20, 02:00 UTCMay 20, 02:35 UTC35m
2026-05-20 N7443T - May 20, 01:05 UTCMay 20, 01:20 UTC15m
2026-05-17 N7443T - May 17, 20:45 UTCMay 17, 23:35 UTC2h 50m
2026-05-17 N7443T - May 17, 19:05 UTCMay 17, 20:05 UTC1h 0m
2026-05-17 N7443T - May 17, 17:55 UTCMay 17, 18:25 UTC30m
2026-05-16 N7443T - May 16, 23:55 UTCMay 17, 00:50 UTC55m
2026-05-16 N7443T - May 16, 21:20 UTCMay 16, 21:50 UTC30m
2026-05-16 N7443T - May 16, 17:35 UTCMay 16, 18:00 UTC25m
2026-05-16 N7443T - May 16, 15:50 UTCMay 16, 16:55 UTC1h 5m
2026-05-16 N7443T - May 16, 02:00 UTCMay 16, 02:50 UTC50m
2026-05-15 N7443T - May 15, 23:45 UTCMay 16, 00:05 UTC20m
2026-05-14 N7443T - May 14, 01:55 UTCMay 14, 02:30 UTC35m
2026-05-04 N7443T - May 4, 14:10 UTCMay 4, 15:45 UTC1h 35m
2026-05-03 N7443T - May 3, 22:54 UTCMay 4, 00:25 UTC1h 30m
2026-05-03 N7443T - May 3, 21:05 UTCMay 3, 22:20 UTC1h 15m
2026-05-03 N7443T - May 3, 17:10 UTCMay 3, 19:00 UTC1h 50m

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 N7443T page for operator, model, and routing details .

Mode-S AA0439 frequently asked

What is Mode-S code AA0439?
AA0439 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7443T.
Where is Mode-S AA0439 registered?
Mode-S code AA0439 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 AA0439 broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA0439, octal 52402071, decimal 11,142,201.
What flights does AA0439 operate?
Mode-S AA0439 has broadcast 1 distinct callsign, including N7443T.