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sensors Mode-S transponder

A06435

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N124SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A06435
Octal
50062065
Decimal
10,511,413
Country
US
Tail
N124SY
Type
E75L
No current signal · last broadcast 5h ago
Flights observed
489
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A06435.

Country allocation

The ICAO 24-bit address A06435 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 20 distinct

Callsign Airline Flights Last seen
SKW4657 - 7 2026-06-13
SKW5937 SkyWest Airlines 6 2026-06-21
SKW5757 - 5 2026-07-07
SKW4746 - 5 2026-07-10
SKW4638 - 5 2026-07-12
SKW6004 SkyWest Airlines 4 2026-06-10
SKW5805 SkyWest Airlines 4 2026-04-20
SKW5756 - 4 2026-07-12
SKW5722 SkyWest Airlines 4 2026-05-15
SKW5625 SkyWest Airlines 4 2026-05-24
SKW5549 SkyWest Airlines 4 2026-04-21
SKW5475 SkyWest Airlines 4 2026-06-17
SKW5381 - 4 2026-07-12
SKW5253 SkyWest Airlines 4 2026-05-29
SKW5228 - 4 2026-07-13
SKW4667 - 4 2026-07-09
SKW6005 SkyWest Airlines 3 2026-06-08
SKW5934 - 3 2026-06-18
SKW5932 - 3 2026-07-13
SKW5928 SkyWest Airlines 3 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW5275 - Jul 14, 00:05 UTCJul 14, 01:30 UTC1h 25m
2026-07-13 SKW4699 - Jul 13, 20:05 UTCJul 13, 21:50 UTC1h 45m
2026-07-13 SKW4699 ILM → ORD Jul 13, 20:05 UTCJul 13, 21:33 UTC1h 28m
2026-07-13 SKW5932 - Jul 13, 16:50 UTCJul 13, 18:25 UTC1h 35m
2026-07-13 SKW5932 ORD → ILM Jul 13, 17:05 UTCJul 13, 18:32 UTC1h 27m
2026-07-13 SKW5501 - Jul 13, 12:55 UTCJul 13, 14:25 UTC1h 30m
2026-07-13 SKW5501 LIT → ORD Jul 13, 12:36 UTCJul 13, 14:10 UTC1h 34m
2026-07-13 SKW5228 - Jul 13, 02:45 UTCJul 13, 03:55 UTC1h 10m
2026-07-12 SKW5390 MSP → ORD Jul 12, 23:55 UTCJul 13, 00:50 UTC55m
2026-07-12 SKW5871 ORD → MSP Jul 12, 22:00 UTCJul 12, 23:00 UTC1h 0m
2026-07-12 SKW5381 - Jul 12, 18:30 UTCJul 12, 19:25 UTC55m
2026-07-12 SKW5381 DTW → ORD Jul 12, 18:26 UTCJul 12, 19:14 UTC48m
2026-07-12 SKW5756 ORD → DTW Jul 12, 16:23 UTCJul 12, 17:11 UTC48m
2026-07-12 SKW5756 - Jul 12, 16:20 UTCJul 12, 17:10 UTC50m
2026-07-12 SKW5790 - Jul 12, 12:05 UTCJul 12, 14:15 UTC2h 10m
2026-07-12 SKW4638 ORD → COS Jul 12, 01:30 UTCJul 12, 03:30 UTC2h 0m
2026-07-11 SKW4749 - Jul 11, 22:40 UTCJul 11, 23:40 UTC1h 0m
2026-07-11 SKW418R ORD → DAY Jul 11, 20:35 UTCJul 11, 21:25 UTC50m
2026-07-11 SKW5659 - Jul 11, 14:30 UTCJul 11, 17:00 UTC2h 30m
2026-07-11 SKW5659 ELP → ORD Jul 11, 14:15 UTCJul 11, 16:42 UTC2h 27m
2026-07-11 SKW5533 - Jul 11, 01:15 UTCJul 11, 03:55 UTC2h 40m
2026-07-10 SKW5435 - Jul 10, 23:10 UTCJul 11, 00:05 UTC55m
2026-07-10 SKW5985 ORD → IND Jul 10, 21:25 UTCJul 10, 21:55 UTC30m
2026-07-10 SKW4746 - Jul 10, 20:10 UTCJul 10, 20:15 UTC5m
2026-07-10 SKW4746 CVG → ORD Jul 10, 18:14 UTCJul 10, 19:55 UTC1h 41m
2026-07-10 SKW4648 ORD → CVG Jul 10, 16:10 UTCJul 10, 16:55 UTC45m
2026-07-10 SKW5790 COS → ORD Jul 10, 11:55 UTCJul 10, 14:05 UTC2h 10m
2026-07-10 SKW4638 - Jul 10, 01:45 UTCJul 10, 04:40 UTC2h 55m
2026-07-09 SKW4749 - Jul 9, 22:25 UTCJul 9, 23:15 UTC50m
2026-07-09 SKW418R ORD → DAY Jul 9, 20:35 UTCJul 9, 21:25 UTC50m
2026-07-09 SKW4653 BNA → ORD Jul 9, 16:30 UTCJul 9, 17:40 UTC1h 10m
2026-07-09 SKW4653 BNA → ORD Jul 9, 16:32 UTCJul 9, 17:33 UTC1h 1m
2026-07-09 SKW5304 ORD → BNA Jul 9, 14:10 UTCJul 9, 15:15 UTC1h 5m
2026-07-09 SKW4667 BGR → ORD Jul 9, 10:22 UTCJul 9, 12:25 UTC2h 3m
2026-07-09 SKW4667 - Jul 9, 10:15 UTCJul 9, 12:35 UTC2h 20m
2026-07-09 SKW5681 ORD → BGR Jul 9, 01:10 UTCJul 9, 03:10 UTC2h 0m
2026-07-07 SKW5751 - Jul 7, 23:15 UTCJul 8, 01:00 UTC1h 45m
2026-07-07 SKW5757 - Jul 7, 20:00 UTCJul 7, 21:40 UTC1h 40m
2026-07-07 SKW5757 ORD → CLT Jul 7, 20:05 UTCJul 7, 21:38 UTC1h 33m
2026-07-07 SKW6098 - Jul 7, 15:40 UTCJul 7, 18:05 UTC2h 25m
2026-06-26 SKW6081 - Jun 26, 01:15 UTCJun 26, 03:00 UTC1h 45m
2026-06-25 SKW5478 - Jun 25, 22:29 UTCJun 25, 23:24 UTC55m
2026-06-25 SKW5760 DEN → LIT Jun 25, 19:40 UTCJun 25, 21:22 UTC1h 42m
2026-06-25 SKW5760 - Jun 25, 19:34 UTCJun 25, 21:15 UTC1h 40m
2026-06-25 SKW5276 - Jun 25, 17:05 UTCJun 25, 18:39 UTC1h 35m
2026-06-25 SKW5795 - Jun 25, 14:34 UTCJun 25, 16:05 UTC1h 30m
2026-06-24 SKW4718 - Jun 24, 23:50 UTCJun 25, 01:59 UTC2h 10m
2026-06-24 SKW4718 CLT → ORD Jun 24, 23:53 UTCJun 25, 01:46 UTC1h 53m
2026-06-24 SKW5757 ORD → CLT Jun 24, 20:05 UTCJun 24, 21:33 UTC1h 28m
2026-06-24 SKW5757 - Jun 24, 20:09 UTCJun 24, 21:34 UTC1h 25m

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 N124SY page for operator, model, and routing details .

Mode-S A06435 frequently asked

What is Mode-S code A06435?
A06435 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N124SY.
Where is Mode-S A06435 registered?
Mode-S code A06435 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 A06435 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A06435, octal 50062065, decimal 10,511,413.
What flights does A06435 operate?
Mode-S A06435 has broadcast 20 distinct callsigns, including SKW4657, SKW5937, SKW5757, SKW4746, SKW4638.