Apparatus

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sensors Mode-S transponder

A5790F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4516T · AMERICAN AA-5 Tiger · operated by AIR TIME LLC

Hex
A5790F
Octal
51274417
Decimal
10,844,431
Country
US
Tail
N4516T
Type
AA5
No current signal · last broadcast 24d ago
Flights observed
21
Distinct callsigns
1
Country
US
Last broadcast
24d ago

Last known position

Most recent position reported by Mode-S A5790F.

Country allocation

The ICAO 24-bit address A5790F 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
N4516T - 21 2026-07-23

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-07-23 N4516T - Jul 23, 16:30 UTCJul 23, 16:50 UTC20m
2026-07-21 N4516T - Jul 21, 16:20 UTCJul 21, 16:55 UTC35m
2026-07-16 N4516T - Jul 16, 15:19 UTCJul 16, 16:19 UTC1h 0m
2026-07-15 N4516T - Jul 15, 18:30 UTCJul 15, 19:15 UTC45m
2026-07-14 N4516T - Jul 14, 19:30 UTCJul 14, 20:15 UTC45m
2026-07-13 N4516T - Jul 13, 18:25 UTCJul 13, 19:20 UTC55m
2026-07-09 N4516T - Jul 9, 18:20 UTCJul 9, 19:00 UTC40m
2026-07-03 N4516T - Jul 3, 20:10 UTCJul 3, 20:20 UTC10m
2026-07-03 N4516T - Jul 3, 16:40 UTCJul 3, 16:55 UTC15m
2026-06-21 N4516T - Jun 21, 19:20 UTCJun 21, 19:34 UTC15m
2026-06-13 N4516T - Jun 13, 17:55 UTCJun 13, 18:25 UTC30m
2026-06-13 N4516T - Jun 13, 14:00 UTCJun 13, 14:25 UTC25m
2026-06-12 N4516T - Jun 12, 21:15 UTCJun 12, 21:40 UTC25m
2026-06-12 N4516T - Jun 12, 13:20 UTCJun 12, 13:35 UTC15m
2026-06-11 N4516T - Jun 11, 22:10 UTCJun 11, 22:20 UTC10m
2026-06-11 N4516T - Jun 11, 20:25 UTCJun 11, 20:35 UTC10m
2026-05-18 N4516T - May 18, 17:45 UTCMay 18, 18:05 UTC20m
2026-05-11 N4516T - May 11, 18:20 UTCMay 11, 19:00 UTC40m
2026-04-27 N4516T - Apr 27, 18:50 UTCApr 27, 19:35 UTC45m
2026-04-21 N4516T - Apr 21, 15:31 UTCApr 21, 16:15 UTC45m
2026-04-20 N4516T - Apr 20, 15:30 UTCApr 20, 15:40 UTC10m

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 N4516T page for operator, model, and routing details .

Mode-S A5790F frequently asked

What is Mode-S code A5790F?
A5790F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4516T.
Where is Mode-S A5790F registered?
Mode-S code A5790F 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 A5790F broadcasting right now?
No active broadcast right now. Last signal was 24d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5790F, octal 51274417, decimal 10,844,431.
What flights does A5790F operate?
Mode-S A5790F has broadcast 1 distinct callsign, including N4516T.