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sensors Mode-S transponder

AD2517

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N946SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
AD2517
Octal
53222427
Decimal
11,347,223
Country
US
Tail
N946SW
Type
CRJ2
Broadcasting now · callsign SKW304R · 3,950 ft
Flights observed
795
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 17:55 UTC

Current position

AD2517 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD2517 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
SKW5737 - 30 2026-07-06
SKW5707 - 27 2026-07-06
SKW5557 - 27 2026-07-07
SKW5338 - 27 2026-07-06
SKW4779 - 27 2026-07-06
SKW5942 - 26 2026-07-06
SKW4729 - 26 2026-07-07
SKW5738 - 25 2026-07-07
SKW5502 - 25 2026-07-07
SKW5271 - 25 2026-07-08
SKW5796 - 23 2026-07-08
SKW5961 - 22 2026-07-08
SKW5592 - 22 2026-07-07
SKW410Z - 19 2026-07-07
SKW6018 - 18 2026-07-06
SKW338F - 11 2026-07-07
SKW308R SkyWest Airlines 11 2026-06-20
SKW6022 SkyWest Airlines 5 2026-05-18
SKW592J SkyWest Airlines 5 2026-07-18
SKW5214 SkyWest Airlines 5 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW6066 ORD → DEC Jul 26, 17:00 UTCJul 26, 17:45 UTC45m
2026-07-26 SKW6066 ORD → DEC Jul 26, 17:03 UTCJul 26, 17:54 UTC51m
2026-07-26 SKW380C - Jul 26, 15:00 UTCJul 26, 15:55 UTC55m
2026-07-26 SKW5086 PIB → IAH Jul 26, 11:10 UTCJul 26, 13:00 UTC1h 50m
2026-07-26 SKW5086 PIB → IAH Jul 26, 11:16 UTCJul 26, 13:06 UTC1h 50m
2026-07-26 SKW5094 ORD → FOD Jul 26, 01:15 UTCJul 26, 02:55 UTC1h 40m
2026-07-26 SKW5094 ORD → FOD Jul 26, 01:13 UTCJul 26, 02:49 UTC1h 36m
2026-07-25 SKW5044 PBG → IAD Jul 25, 21:10 UTCJul 25, 21:40 UTC30m
2026-07-25 SKW5044 PBG → IAD Jul 25, 21:19 UTCJul 25, 21:37 UTC18m
2026-07-25 SKW591M IAH → AEX Jul 25, 19:25 UTCJul 25, 19:55 UTC30m
2026-07-25 SKW5129 ORD → CMX Jul 25, 15:45 UTCJul 25, 16:40 UTC55m
2026-07-25 SKW5129 ORD → CMX Jul 25, 15:49 UTCJul 25, 16:39 UTC50m
2026-07-25 SKW5049 PIB → IAH Jul 25, 13:15 UTCJul 25, 14:10 UTC55m
2026-07-25 SKW5049 PIB → IAH Jul 25, 13:21 UTCJul 25, 14:14 UTC53m
2026-07-25 SKW5058 VCT → IAH Jul 25, 10:40 UTCJul 25, 11:05 UTC25m
2026-07-25 SKW5058 VCT → IAH Jul 25, 10:41 UTCJul 25, 11:07 UTC26m
2026-07-25 SKW313P IAH → VCT Jul 25, 03:15 UTCJul 25, 03:45 UTC30m
2026-07-25 SKW5530 RDM → SFO Jul 25, 00:05 UTCJul 25, 00:55 UTC50m
2026-07-24 SKW5368 MKE → IAH Jul 24, 21:45 UTCJul 24, 22:30 UTC45m
2026-07-24 SKW4735 IAH → COS Jul 24, 19:10 UTCJul 24, 19:50 UTC40m
2026-07-24 SKW4735 IAH → COS Jul 24, 19:17 UTCJul 24, 19:49 UTC32m
2026-07-24 SKW5365 ORD → CVG Jul 24, 17:20 UTCJul 24, 18:00 UTC40m
2026-07-24 SKW5347 SNA → SFO Jul 24, 15:10 UTCJul 24, 15:45 UTC35m
2026-07-24 SKW4682 CVG → ORD Jul 24, 01:20 UTCJul 24, 01:55 UTC35m
2026-07-23 SKW5045 ORD → MGW Jul 23, 22:10 UTCJul 23, 23:50 UTC1h 40m
2026-07-23 SKW524C - Jul 23, 19:50 UTCJul 23, 21:05 UTC1h 15m
2026-07-23 SKW524C IAH → MGM Jul 23, 19:42 UTCJul 23, 21:09 UTC1h 27m
2026-07-23 SKW5129 ORD → CMX Jul 23, 16:00 UTCJul 23, 16:50 UTC50m
2026-07-23 SKW5049 PIB → IAH Jul 23, 13:10 UTCJul 23, 14:00 UTC50m
2026-07-23 SKW5058 VCT → IAH Jul 23, 10:30 UTCJul 23, 10:55 UTC25m
2026-07-23 SKW313P IAH → VCT Jul 23, 03:20 UTCJul 23, 03:45 UTC25m
2026-07-22 SKW5045 ORD → MGW Jul 22, 22:15 UTCJul 22, 23:35 UTC1h 20m
2026-07-22 SKW524C - Jul 22, 19:45 UTCJul 22, 21:05 UTC1h 20m
2026-07-22 SKW788P - Jul 22, 17:20 UTCJul 22, 18:10 UTC50m
2026-07-22 SKW425P - Jul 22, 14:30 UTCJul 22, 15:50 UTC1h 20m
2026-07-22 SKW5054 - Jul 22, 11:35 UTCJul 22, 12:50 UTC1h 15m
2026-07-22 SKW5054 SGU → DEN Jul 22, 11:28 UTCJul 22, 12:47 UTC1h 19m
2026-07-21 SKW5113 ORD → JST Jul 21, 18:00 UTCJul 21, 19:00 UTC1h 0m
2026-07-21 SKW4736 - Jul 21, 15:05 UTCJul 21, 15:55 UTC50m
2026-07-21 SKW5585 XNA → ORD Jul 21, 00:30 UTCJul 21, 01:15 UTC45m
2026-07-21 SKW5585 XNA → ORD Jul 21, 00:11 UTCJul 21, 01:11 UTC1h 0m
2026-07-20 SKW5952 - Jul 20, 21:55 UTCJul 20, 22:35 UTC40m
2026-07-20 SKW5224 - Jul 20, 19:50 UTCJul 20, 20:15 UTC25m
2026-07-20 SKW5224 DEN → DRO Jul 20, 19:45 UTCJul 20, 20:33 UTC48m
2026-07-20 SKW4764 - Jul 20, 16:40 UTCJul 20, 17:25 UTC45m
2026-07-20 SKW4790 - Jul 20, 14:35 UTCJul 20, 15:00 UTC25m
2026-07-20 SKW6072 DEN → ROW Jul 20, 11:30 UTCJul 20, 12:10 UTC40m
2026-07-20 SKW357Z DEN → EAR Jul 20, 03:05 UTCJul 20, 03:30 UTC25m
2026-07-20 SKW5391 TUS → SFO Jul 20, 01:15 UTCJul 20, 01:40 UTC25m
2026-07-19 SKW5308 EUG → SFO Jul 19, 23:50 UTCJul 20, 00:10 UTC20m

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 N946SW page for operator, model, and routing details .

Mode-S AD2517 frequently asked

What is Mode-S code AD2517?
AD2517 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N946SW.
Where is Mode-S AD2517 registered?
Mode-S code AD2517 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 AD2517 broadcasting right now?
Yes. Mode-S AD2517 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD2517, octal 53222427, decimal 11,347,223.
What flights does AD2517 operate?
Mode-S AD2517 has broadcast 20 distinct callsigns, including SKW5737, SKW5707, SKW5557, SKW5338, SKW4779.