Apparatus

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sensors Mode-S transponder

A59D3D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4609Q · CESSNA 172 Skyhawk · operated by N4609Q LLC

Hex
A59D3D
Octal
51316475
Decimal
10,853,693
Country
US
Tail
N4609Q
Type
C172
Broadcasting now · callsign N4609Q · 2,250 ft
Flights observed
302
Distinct callsigns
1
Country
US
Last broadcast
43m ago

Current position

A59D3D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A59D3D 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
N4609Q - 302 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N4609Q OPF → OPF Jul 14, 15:35 UTCJul 14, 17:05 UTC1h 30m
2026-07-14 N4609Q - Jul 14, 10:50 UTCJul 14, 12:50 UTC2h 0m
2026-07-13 N4609Q - Jul 13, 20:35 UTCJul 13, 22:50 UTC2h 15m
2026-07-13 N4609Q - Jul 13, 17:05 UTCJul 13, 19:05 UTC2h 0m
2026-07-13 N4609Q - Jul 13, 13:00 UTCJul 13, 14:35 UTC1h 35m
2026-07-12 N4609Q - Jul 12, 01:10 UTCJul 12, 02:05 UTC55m
2026-07-11 N4609Q - Jul 11, 12:10 UTCJul 11, 14:40 UTC2h 30m
2026-07-10 N4609Q - Jul 10, 22:40 UTCJul 10, 23:50 UTC1h 10m
2026-07-10 N4609Q - Jul 10, 17:40 UTCJul 10, 18:50 UTC1h 10m
2026-07-10 N4609Q - Jul 10, 15:35 UTCJul 10, 16:40 UTC1h 5m
2026-07-10 N4609Q - Jul 10, 13:05 UTCJul 10, 13:40 UTC35m
2026-07-10 N4609Q - Jul 10, 11:25 UTCJul 10, 11:55 UTC30m
2026-07-10 N4609Q - Jul 10, 03:15 UTCJul 10, 04:00 UTC45m
2026-07-10 N4609Q - Jul 10, 01:55 UTCJul 10, 02:45 UTC50m
2026-07-09 N4609Q - Jul 9, 21:05 UTCJul 9, 22:20 UTC1h 15m
2026-07-09 N4609Q - Jul 9, 17:40 UTCJul 9, 18:15 UTC35m
2026-07-09 N4609Q - Jul 9, 12:55 UTCJul 9, 13:30 UTC35m
2026-07-09 N4609Q - Jul 9, 11:05 UTCJul 9, 12:05 UTC1h 0m
2026-07-08 N4609Q - Jul 8, 22:55 UTCJul 9, 00:00 UTC1h 5m
2026-07-08 N4609Q - Jul 8, 20:40 UTCJul 8, 21:50 UTC1h 10m
2026-07-08 N4609Q - Jul 8, 17:55 UTCJul 8, 19:05 UTC1h 10m
2026-07-08 N4609Q - Jul 8, 15:30 UTCJul 8, 16:45 UTC1h 15m
2026-07-08 N4609Q - Jul 8, 12:55 UTCJul 8, 13:40 UTC45m
2026-07-08 N4609Q - Jul 8, 11:00 UTCJul 8, 12:20 UTC1h 20m
2026-07-07 N4609Q - Jul 7, 23:00 UTCJul 7, 23:40 UTC40m
2026-07-07 N4609Q - Jul 7, 17:45 UTCJul 7, 18:55 UTC1h 10m
2026-07-07 N4609Q OPF → OPF Jul 7, 15:50 UTCJul 7, 16:55 UTC1h 5m
2026-07-07 N4609Q - Jul 7, 12:45 UTCJul 7, 13:50 UTC1h 5m
2026-07-07 N4609Q - Jul 7, 10:55 UTCJul 7, 11:40 UTC45m
2026-07-06 N4609Q - Jul 6, 15:55 UTCJul 6, 16:40 UTC45m
2026-07-06 N4609Q - Jul 6, 11:15 UTCJul 6, 12:05 UTC50m
2026-07-05 N4609Q - Jul 5, 16:20 UTCJul 5, 17:30 UTC1h 10m
2026-07-05 N4609Q - Jul 5, 14:40 UTCJul 5, 15:20 UTC40m
2026-07-05 N4609Q - Jul 5, 00:50 UTCJul 5, 01:40 UTC50m
2026-07-04 N4609Q - Jul 4, 11:30 UTCJul 4, 13:55 UTC2h 25m
2026-07-03 N4609Q - Jul 3, 16:00 UTCJul 3, 16:40 UTC40m
2026-07-03 N4609Q - Jul 3, 14:35 UTCJul 3, 15:25 UTC50m
2026-07-03 N4609Q - Jul 3, 11:45 UTCJul 3, 13:15 UTC1h 30m
2026-07-02 N4609Q - Jul 2, 23:10 UTCJul 3, 00:10 UTC1h 0m
2026-07-02 N4609Q - Jul 2, 16:00 UTCJul 2, 16:15 UTC15m
2026-07-02 N4609Q - Jul 2, 12:40 UTCJul 2, 14:00 UTC1h 20m
2026-07-02 N4609Q - Jul 2, 11:00 UTCJul 2, 11:55 UTC55m
2026-07-02 N4609Q - Jul 2, 01:40 UTCJul 2, 02:30 UTC50m
2026-07-01 N4609Q - Jul 1, 17:55 UTCJul 1, 18:55 UTC1h 0m
2026-07-01 N4609Q - Jul 1, 15:55 UTCJul 1, 16:30 UTC35m
2026-07-01 N4609Q - Jul 1, 13:10 UTCJul 1, 14:05 UTC55m
2026-07-01 N4609Q - Jul 1, 02:00 UTCJul 1, 03:30 UTC1h 30m
2026-06-30 N4609Q - Jun 30, 21:05 UTCJun 30, 23:20 UTC2h 15m
2026-06-30 N4609Q - Jun 30, 15:50 UTCJun 30, 17:00 UTC1h 10m
2026-06-30 N4609Q - Jun 30, 12:40 UTCJun 30, 13:50 UTC1h 10m

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 N4609Q page for operator, model, and routing details .

Mode-S A59D3D frequently asked

What is Mode-S code A59D3D?
A59D3D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4609Q.
Where is Mode-S A59D3D registered?
Mode-S code A59D3D 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 A59D3D broadcasting right now?
Yes. Mode-S A59D3D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A59D3D, octal 51316475, decimal 10,853,693.
What flights does A59D3D operate?
Mode-S A59D3D has broadcast 1 distinct callsign, including N4609Q.