Apparatus

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sensors Mode-S transponder

A17559

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N193WW · SHORT Skyvan · operated by WIN WIN AVIATION INC

Hex
A17559
Octal
50272531
Decimal
10,581,337
Country
US
Tail
N193WW
Type
SC7
No current signal · last broadcast 1d ago
Flights observed
36
Distinct callsigns
3
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A17559.

Country allocation

The ICAO 24-bit address A17559 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 3 distinct

Callsign Airline Flights Last seen
CFC4508 - 25 2026-06-26
N193WW - 6 2026-07-16
SKYVAN3 - 5 2026-07-16

Recent flights last 36

DateFlightRouteTakeoffLandingDuration
2026-07-16 N193WW - Jul 16, 19:30 UTCJul 16, 21:35 UTC2h 5m
2026-07-16 N193WW - Jul 16, 16:15 UTCJul 16, 18:55 UTC2h 40m
2026-07-16 SKYVAN3 - Jul 16, 13:05 UTCJul 16, 15:19 UTC2h 15m
2026-07-15 SKYVAN3 - Jul 15, 13:15 UTCJul 15, 16:45 UTC3h 30m
2026-07-14 SKYVAN3 - Jul 14, 13:20 UTCJul 14, 15:50 UTC2h 30m
2026-07-13 SKYVAN3 - Jul 13, 17:45 UTCJul 13, 18:50 UTC1h 5m
2026-07-13 SKYVAN3 - Jul 13, 16:15 UTCJul 13, 17:15 UTC1h 0m
2026-07-13 N193WW - Jul 13, 13:40 UTCJul 13, 15:35 UTC1h 55m
2026-07-09 N193WW - Jul 9, 20:00 UTCJul 9, 20:10 UTC10m
2026-06-26 CFC4508 - Jun 26, 21:04 UTCJun 26, 22:34 UTC1h 30m
2026-06-26 CFC4508 - Jun 26, 18:54 UTCJun 26, 20:04 UTC1h 10m
2026-06-26 CFC4508 - Jun 26, 16:09 UTCJun 26, 17:29 UTC1h 20m
2026-06-25 CFC4508 - Jun 25, 15:20 UTCJun 25, 15:29 UTC10m
2026-06-25 CFC4508 - Jun 25, 14:09 UTCJun 25, 14:20 UTC10m
2026-06-25 CFC4508 - Jun 25, 01:40 UTCJun 25, 03:50 UTC2h 10m
2026-06-24 CFC4508 - Jun 24, 23:40 UTCJun 25, 00:14 UTC35m
2026-06-24 CFC4508 - Jun 24, 21:09 UTCJun 24, 21:29 UTC20m
2026-06-24 CFC4508 - Jun 24, 19:39 UTCJun 24, 20:20 UTC40m
2026-06-23 CFC4508 - Jun 23, 19:10 UTCJun 23, 19:24 UTC15m
2026-06-23 CFC4508 - Jun 23, 17:59 UTCJun 23, 18:14 UTC15m
2026-06-23 CFC4508 - Jun 23, 16:35 UTCJun 23, 16:50 UTC15m
2026-06-23 CFC4508 - Jun 23, 15:30 UTCJun 23, 15:44 UTC15m
2026-06-17 CFC4508 - Jun 17, 15:46 UTCJun 17, 16:00 UTC15m
2026-06-17 CFC4508 - Jun 17, 14:35 UTCJun 17, 14:45 UTC10m
2026-06-16 CFC4508 - Jun 16, 15:40 UTCJun 16, 15:50 UTC10m
2026-06-15 CFC4508 - Jun 15, 13:15 UTCJun 15, 14:05 UTC50m
2026-06-13 CFC4508 - Jun 13, 21:35 UTCJun 13, 22:20 UTC45m
2026-06-13 CFC4508 - Jun 13, 14:45 UTCJun 13, 15:25 UTC40m
2026-06-13 CFC4508 - Jun 13, 12:55 UTCJun 13, 13:30 UTC35m
2026-06-12 CFC4508 - Jun 12, 16:10 UTCJun 12, 16:35 UTC25m
2026-06-10 CFC4508 - Jun 10, 21:20 UTCJun 10, 22:05 UTC45m
2026-06-09 CFC4508 - Jun 9, 18:30 UTCJun 9, 18:45 UTC15m
2026-06-08 CFC4508 - Jun 8, 18:00 UTCJun 8, 18:10 UTC10m
2026-06-05 CFC4508 - Jun 5, 16:25 UTCJun 5, 17:40 UTC1h 15m
2026-06-04 N193WW - Jun 4, 16:25 UTCJun 4, 16:45 UTC20m
2026-06-03 N193WW - Jun 3, 15:05 UTCJun 3, 15:15 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 N193WW page for operator, model, and routing details .

Mode-S A17559 frequently asked

What is Mode-S code A17559?
A17559 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N193WW.
Where is Mode-S A17559 registered?
Mode-S code A17559 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 A17559 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A17559, octal 50272531, decimal 10,581,337.
What flights does A17559 operate?
Mode-S A17559 has broadcast 3 distinct callsigns, including CFC4508, N193WW, SKYVAN3.