Apparatus

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sensors Mode-S transponder

A58F6A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4577 · CESSNA 172 Skyhawk · operated by GATEWAY OF STURGIS LLC

Hex
A58F6A
Octal
51307552
Decimal
10,850,154
Country
US
Tail
N4577
Type
C172
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
102
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A58F6A.

Country allocation

The ICAO 24-bit address A58F6A 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
N4577 - 102 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N4577 - Jul 26, 21:55 UTCJul 26, 22:30 UTC35m
2026-07-26 N4577 PLY → PLY Jul 26, 19:40 UTCJul 26, 20:40 UTC1h 0m
2026-07-24 N4577 - Jul 24, 22:15 UTCJul 24, 23:00 UTC45m
2026-07-24 N4577 - Jul 24, 20:50 UTCJul 24, 21:30 UTC40m
2026-07-24 N4577 - Jul 24, 18:55 UTCJul 24, 19:35 UTC40m
2026-07-23 N4577 - Jul 23, 21:00 UTCJul 23, 21:35 UTC35m
2026-07-22 N4577 - Jul 22, 22:05 UTCJul 22, 23:05 UTC1h 0m
2026-07-21 N4577 - Jul 21, 22:30 UTCJul 21, 23:10 UTC40m
2026-07-21 N4577 - Jul 21, 20:15 UTCJul 21, 21:15 UTC1h 0m
2026-07-21 N4577 PLY → PLY Jul 21, 18:15 UTCJul 21, 19:00 UTC45m
2026-07-21 N4577 PLY → PLY Jul 21, 16:20 UTCJul 21, 17:10 UTC50m
2026-07-20 N4577 PLY → PLY Jul 20, 21:40 UTCJul 20, 23:05 UTC1h 25m
2026-07-20 N4577 PLY → PLY Jul 20, 19:15 UTCJul 20, 20:10 UTC55m
2026-07-20 N4577 - Jul 20, 17:05 UTCJul 20, 17:55 UTC50m
2026-07-13 N4577 - Jul 13, 20:45 UTCJul 13, 21:30 UTC45m
2026-07-10 N4577 PLY → PLY Jul 10, 18:00 UTCJul 10, 19:00 UTC1h 0m
2026-07-10 N4577 PLY → PLY Jul 10, 16:00 UTCJul 10, 17:00 UTC1h 0m
2026-07-09 N4577 PLY → PLY Jul 9, 17:15 UTCJul 9, 18:00 UTC45m
2026-07-09 N4577 - Jul 9, 15:20 UTCJul 9, 16:10 UTC50m
2026-07-08 N4577 PLY → PLY Jul 8, 21:40 UTCJul 8, 22:50 UTC1h 10m
2026-07-08 N4577 - Jul 8, 18:25 UTCJul 8, 19:10 UTC45m
2026-07-08 N4577 PLY → PLY Jul 8, 16:25 UTCJul 8, 17:15 UTC50m
2026-07-08 N4577 PLY → PLY Jul 8, 14:25 UTCJul 8, 15:20 UTC55m
2026-07-07 N4577 - Jul 7, 21:50 UTCJul 7, 22:40 UTC50m
2026-07-07 N4577 - Jul 7, 13:20 UTCJul 7, 14:00 UTC40m
2026-07-07 N4577 PLY → PLY Jul 7, 00:15 UTCJul 7, 00:55 UTC40m
2026-07-06 N4577 - Jul 6, 21:55 UTCJul 6, 23:00 UTC1h 5m
2026-07-03 N4577 - Jul 3, 17:00 UTCJul 3, 17:50 UTC50m
2026-07-03 N4577 PLY → PLY Jul 3, 13:40 UTCJul 3, 14:40 UTC1h 0m
2026-07-02 N4577 - Jul 2, 17:45 UTCJul 2, 18:25 UTC40m
2026-07-02 N4577 PLY → PLY Jul 2, 13:45 UTCJul 2, 14:40 UTC55m
2026-07-01 N4577 - Jul 1, 18:10 UTCJul 1, 18:20 UTC10m
2026-07-01 N4577 PLY → PLY Jul 1, 16:40 UTCJul 1, 17:20 UTC40m
2026-07-01 N4577 - Jul 1, 15:05 UTCJul 1, 15:45 UTC40m
2026-06-29 N4577 - Jun 29, 23:05 UTCJun 30, 00:14 UTC1h 10m
2026-06-26 N4577 - Jun 26, 13:49 UTCJun 26, 14:35 UTC45m
2026-06-25 N4577 - Jun 25, 19:29 UTCJun 25, 20:14 UTC45m
2026-06-25 N4577 - Jun 25, 17:39 UTCJun 25, 18:10 UTC30m
2026-06-25 N4577 PLY → PLY Jun 25, 15:44 UTCJun 25, 16:29 UTC45m
2026-06-24 N4577 - Jun 24, 22:29 UTCJun 24, 23:14 UTC45m
2026-06-24 N4577 - Jun 24, 19:55 UTCJun 24, 20:05 UTC10m
2026-06-24 N4577 - Jun 24, 15:14 UTCJun 24, 15:59 UTC45m
2026-06-23 N4577 - Jun 23, 17:59 UTCJun 23, 18:39 UTC40m
2026-06-17 N4577 - Jun 17, 13:40 UTCJun 17, 14:35 UTC55m
2026-06-15 N4577 PLY → PLY Jun 15, 18:25 UTCJun 15, 19:25 UTC1h 0m
2026-06-15 N4577 - Jun 15, 15:55 UTCJun 15, 16:24 UTC30m
2026-06-15 N4577 - Jun 15, 13:34 UTCJun 15, 14:15 UTC40m
2026-06-12 N4577 - Jun 12, 22:00 UTCJun 12, 23:00 UTC1h 0m
2026-06-12 N4577 - Jun 12, 19:20 UTCJun 12, 20:05 UTC45m
2026-06-12 N4577 - Jun 12, 17:20 UTCJun 12, 18:10 UTC50m

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 N4577 page for operator, model, and routing details .

Mode-S A58F6A frequently asked

What is Mode-S code A58F6A?
A58F6A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4577.
Where is Mode-S A58F6A registered?
Mode-S code A58F6A 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 A58F6A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A58F6A, octal 51307552, decimal 10,850,154.
What flights does A58F6A operate?
Mode-S A58F6A has broadcast 1 distinct callsign, including N4577.