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sensors Mode-S transponder

A0205C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N107SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A0205C
Octal
50020134
Decimal
10,494,044
Country
US
Tail
N107SY
Type
E75L
No current signal · last broadcast 4h ago
Flights observed
514
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A0205C.

Country allocation

The ICAO 24-bit address A0205C 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
SKW5672 SkyWest Airlines 7 2026-05-29
SKW4801 - 6 2026-07-09
SKW5972 - 5 2026-06-26
SKW5918 SkyWest Airlines 5 2026-05-10
SKW5365 SkyWest Airlines 5 2026-05-13
SKW5296 SkyWest Airlines 5 2026-05-13
SKW5288 - 5 2026-07-09
SKW5284 - 5 2026-07-13
SKW5214 - 5 2026-06-25
SKW5946 - 4 2026-04-16
SKW5932 SkyWest Airlines 4 2026-05-14
SKW5756 - 4 2026-07-05
SKW5717 - 4 2026-07-01
SKW5709 SkyWest Airlines 4 2026-04-27
SKW5629 SkyWest Airlines 4 2026-04-27
SKW5593 SkyWest Airlines 4 2026-06-25
SKW5497 - 4 2026-06-26
SKW5451 SkyWest Airlines 4 2026-05-16
SKW5409 SkyWest Airlines 4 2026-05-14
SKW5401 SkyWest Airlines 4 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 SKW5934 YYZ → ORD Jul 15, 01:22 UTCJul 15, 02:25 UTC1h 3m
2026-07-15 SKW5934 YYZ → ORD Jul 15, 01:25 UTCJul 15, 02:40 UTC1h 15m
2026-07-14 SKW5591 - Jul 14, 22:40 UTCJul 14, 23:45 UTC1h 4m
2026-07-14 SKW5591 ORD → YYZ Jul 14, 22:10 UTCJul 14, 23:43 UTC1h 33m
2026-07-14 SKW5511 - Jul 14, 18:05 UTCJul 14, 20:00 UTC1h 55m
2026-07-14 SKW5475 - Jul 14, 14:45 UTCJul 14, 16:30 UTC1h 45m
2026-07-14 SKW5293 - Jul 14, 11:05 UTCJul 14, 12:00 UTC55m
2026-07-13 SKW5287 ORD → LEX Jul 13, 23:24 UTCJul 14, 00:22 UTC58m
2026-07-13 SKW5287 - Jul 13, 23:30 UTCJul 14, 00:20 UTC50m
2026-07-13 SKW5382 - Jul 13, 20:05 UTCJul 13, 21:30 UTC1h 25m
2026-07-13 SKW5382 LIT → ORD Jul 13, 20:07 UTCJul 13, 21:17 UTC1h 10m
2026-07-13 SKW5321 - Jul 13, 18:10 UTCJul 13, 19:00 UTC50m
2026-07-13 SKW5321 IAH → LIT Jul 13, 17:13 UTCJul 13, 19:05 UTC1h 52m
2026-07-13 SKW5284 - Jul 13, 13:40 UTCJul 13, 15:00 UTC1h 20m
2026-07-13 SKW5284 SLP → IAH Jul 13, 13:25 UTCJul 13, 14:57 UTC1h 32m
2026-07-12 SKW5283 - Jul 12, 23:45 UTCJul 13, 00:55 UTC1h 10m
2026-07-12 SKW5283 IAH → SLP Jul 12, 23:51 UTCJul 13, 01:23 UTC1h 32m
2026-07-12 SKW5580 - Jul 12, 20:40 UTCJul 12, 22:40 UTC2h 0m
2026-07-12 SKW5580 STL → IAH Jul 12, 20:35 UTCJul 12, 22:37 UTC2h 2m
2026-07-12 SKW5397 - Jul 12, 17:55 UTCJul 12, 19:40 UTC1h 45m
2026-07-12 SKW5373 - Jul 12, 13:15 UTCJul 12, 15:35 UTC2h 20m
2026-07-12 SKW4774 - Jul 12, 00:05 UTCJul 12, 02:01 UTC1h 55m
2026-07-12 SKW4774 DEN → MKE Jul 12, 00:01 UTCJul 12, 01:55 UTC1h 54m
2026-07-11 SKW5788 - Jul 11, 21:55 UTCJul 11, 22:15 UTC20m
2026-07-11 SKW5789 - Jul 11, 19:50 UTCJul 11, 20:05 UTC15m
2026-07-11 SKW5463 - Jul 11, 17:00 UTCJul 11, 18:15 UTC1h 15m
2026-07-11 SKW4762 - Jul 11, 14:10 UTCJul 11, 15:20 UTC1h 10m
2026-07-11 SKW4751 OKC → DEN Jul 11, 11:10 UTCJul 11, 12:30 UTC1h 20m
2026-07-11 SKW5281 - Jul 11, 02:55 UTCJul 11, 04:01 UTC1h 5m
2026-07-11 SKW5281 IAH → OKC Jul 11, 02:51 UTCJul 11, 03:54 UTC1h 3m
2026-07-11 SKW5658 - Jul 11, 00:35 UTCJul 11, 01:10 UTC35m
2026-07-11 SKW5658 SAT → IAH Jul 11, 00:36 UTCJul 11, 01:08 UTC32m
2026-07-10 SKW5379 - Jul 10, 21:55 UTCJul 10, 22:35 UTC40m
2026-07-10 SKW5379 IAH → SAT Jul 10, 21:54 UTCJul 10, 22:33 UTC39m
2026-07-10 SKW5637 - Jul 10, 18:55 UTCJul 10, 20:00 UTC1h 5m
2026-07-10 SKW5637 TUL → IAH Jul 10, 18:57 UTCJul 10, 19:54 UTC57m
2026-07-10 SKW5315 DEN → TUL Jul 10, 16:35 UTCJul 10, 18:00 UTC1h 25m
2026-07-10 SKW4706 - Jul 10, 13:35 UTCJul 10, 14:35 UTC1h 0m
2026-07-10 SKW519M - Jul 10, 02:10 UTCJul 10, 03:00 UTC50m
2026-07-09 SKW5630 - Jul 9, 23:25 UTCJul 10, 00:50 UTC1h 25m
2026-07-09 SKW5454 - Jul 9, 20:20 UTCJul 9, 21:20 UTC1h 0m
2026-07-09 SKW5454 DEN → ICT Jul 9, 20:19 UTCJul 9, 21:16 UTC57m
2026-07-09 SKW5288 - Jul 9, 16:45 UTCJul 9, 18:15 UTC1h 30m
2026-07-09 SKW5288 DSM → DEN Jul 9, 16:49 UTCJul 9, 18:11 UTC1h 22m
2026-07-09 SKW4801 DEN → DSM Jul 9, 14:10 UTCJul 9, 15:35 UTC1h 25m
2026-07-09 SKW4801 DEN → DSM Jul 9, 14:11 UTCJul 9, 15:31 UTC1h 20m
2026-07-09 SKW5895 - Jul 9, 11:10 UTCJul 9, 13:00 UTC1h 50m
2026-07-09 SKW5687 - Jul 9, 05:00 UTCJul 9, 06:30 UTC1h 30m
2026-07-09 SKW5687 DEN → SGF Jul 9, 04:49 UTCJul 9, 06:30 UTC1h 41m
2026-07-09 SKW5736 - Jul 9, 02:45 UTCJul 9, 03:35 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 N107SY page for operator, model, and routing details .

Mode-S A0205C frequently asked

What is Mode-S code A0205C?
A0205C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N107SY.
Where is Mode-S A0205C registered?
Mode-S code A0205C 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 A0205C broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0205C, octal 50020134, decimal 10,494,044.
What flights does A0205C operate?
Mode-S A0205C has broadcast 20 distinct callsigns, including SKW5672, SKW4801, SKW5972, SKW5918, SKW5365.