Apparatus

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sensors Mode-S transponder

AD6539

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N962SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
AD6539
Octal
53262471
Decimal
11,363,641
Country
US
Tail
N962SW
Type
CRJ2
No current signal · last broadcast Jul 26, 19:40 UTC
Flights observed
655
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:40 UTC

Last known position

Most recent position reported by Mode-S AD6539.

Country allocation

The ICAO 24-bit address AD6539 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
SKW5064 SkyWest Airlines 8 2026-07-24
SKW5559 - 7 2026-06-22
SKW5224 - 7 2026-06-27
SKW4631 - 7 2026-06-22
SKW6074 SkyWest Airlines 6 2026-07-25
SKW5297 SkyWest Airlines 6 2026-05-25
SKW5258 SkyWest Airlines 6 2026-05-11
SKW5087 - 6 2026-06-29
SKW6078 - 5 2026-06-29
SKW6070 SkyWest Airlines 5 2026-07-26
SKW5861 SkyWest Airlines 5 2026-06-09
SKW5344 - 5 2026-07-22
SKW5335 SkyWest Airlines 5 2026-07-19
SKW5279 SkyWest Airlines 5 2026-05-04
SKW5245 - 5 2026-06-23
SKW5141 SkyWest Airlines 5 2026-07-23
SKW5121 SkyWest Airlines 5 2026-05-25
SKW5111 - 5 2026-06-24
SKW5049 SkyWest Airlines 5 2026-07-19
SKW5036 - 5 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW6073 PIR → DEN Jul 26, 18:30 UTCJul 26, 19:40 UTC1h 10m
2026-07-26 SKW6071 ORD → FOD Jul 26, 17:10 UTCJul 26, 17:30 UTC20m
2026-07-26 SKW6070 LBF → DEN Jul 26, 14:38 UTCJul 26, 15:12 UTC34m
2026-07-25 SKW6074 ORD → LAF Jul 25, 22:05 UTCJul 25, 23:05 UTC1h 0m
2026-07-25 SKW5352 ORD → LGA Jul 25, 19:30 UTCJul 25, 19:50 UTC20m
2026-07-25 SKW5352 ORD → LGA Jul 25, 19:30 UTCJul 25, 19:47 UTC17m
2026-07-25 SKW5285 RNO → SFO Jul 25, 16:15 UTCJul 25, 16:35 UTC20m
2026-07-25 SKW4670 ORD → LEX Jul 25, 12:20 UTCJul 25, 13:30 UTC1h 10m
2026-07-25 SKW4670 ORD → LEX Jul 25, 12:14 UTCJul 25, 13:16 UTC1h 2m
2026-07-25 SKW359M ORD → DLH Jul 25, 03:05 UTCJul 25, 04:00 UTC55m
2026-07-24 SKW5064 DEC → ORD Jul 24, 23:50 UTCJul 25, 00:30 UTC40m
2026-07-24 SKW5064 DEC → ORD Jul 24, 23:57 UTCJul 25, 00:14 UTC17m
2026-07-24 SKW5064 DEC → ORD Jul 24, 22:35 UTCJul 24, 23:05 UTC30m
2026-07-24 SKW5034 SGU → LAX Jul 24, 19:10 UTCJul 24, 20:50 UTC1h 40m
2026-07-24 SKW5034 SGU → LAX Jul 24, 19:05 UTCJul 24, 20:31 UTC1h 26m
2026-07-24 SKW5075 MCW → ORD Jul 24, 17:05 UTCJul 24, 18:30 UTC1h 25m
2026-07-24 SKW5075 MCW → ORD Jul 24, 16:38 UTCJul 24, 18:26 UTC1h 48m
2026-07-24 SKW5997 PSP → SFO Jul 24, 13:35 UTCJul 24, 14:10 UTC35m
2026-07-23 SKW578A ORD → DEC Jul 23, 23:23 UTCJul 23, 23:34 UTC11m
2026-07-23 SKW578A ORD → DEC Jul 23, 23:05 UTCJul 23, 23:35 UTC30m
2026-07-23 SKW5141 DEN → SGU Jul 23, 19:35 UTCJul 23, 20:15 UTC40m
2026-07-23 SKW5141 DEN → SGU Jul 23, 19:40 UTCJul 23, 20:07 UTC27m
2026-07-23 SKW357K - Jul 23, 17:40 UTCJul 23, 18:20 UTC40m
2026-07-23 SKW5981 - Jul 23, 15:10 UTCJul 23, 15:35 UTC25m
2026-07-23 SKW5595 SFO → OTH Jul 23, 11:30 UTCJul 23, 11:50 UTC20m
2026-07-23 SKW5595 SFO → OTH Jul 23, 11:19 UTCJul 23, 11:55 UTC36m
2026-07-22 SKW4633 BOI → LAX Jul 22, 23:05 UTCJul 22, 23:55 UTC50m
2026-07-22 SKW5633 LEX → ORD Jul 22, 21:20 UTCJul 22, 22:00 UTC40m
2026-07-22 SKW5915 ORD → BNA Jul 22, 18:05 UTCJul 22, 19:10 UTC1h 5m
2026-07-22 SKW5915 ORD → BNA Jul 22, 18:15 UTCJul 22, 18:44 UTC29m
2026-07-22 SKW5344 - Jul 22, 16:05 UTCJul 22, 16:40 UTC35m
2026-07-22 SKW5402 MKE → ORD Jul 22, 14:10 UTCJul 22, 14:40 UTC30m
2026-07-22 SKW5581 ORD → BNA Jul 22, 11:20 UTCJul 22, 11:35 UTC15m
2026-07-19 SKW5335 PNS → DEN Jul 19, 21:55 UTCJul 19, 22:00 UTC5m
2026-07-19 SKW5335 PNS → DEN Jul 19, 20:25 UTCJul 19, 22:00 UTC1h 35m
2026-07-19 SKW5335 PNS → DEN Jul 19, 20:30 UTCJul 19, 21:38 UTC1h 8m
2026-07-19 SKW5282 ORD → MSN Jul 19, 18:05 UTCJul 19, 19:25 UTC1h 20m
2026-07-19 SKW5129 ORD → CMX Jul 19, 15:45 UTCJul 19, 16:40 UTC55m
2026-07-19 SKW5129 ORD → CMX Jul 19, 15:49 UTCJul 19, 16:39 UTC50m
2026-07-19 SKW5049 PIB → IAH Jul 19, 13:10 UTCJul 19, 14:00 UTC50m
2026-07-19 SKW5058 VCT → IAH Jul 19, 10:40 UTCJul 19, 11:15 UTC35m
2026-07-19 SKW313P - Jul 19, 03:35 UTCJul 19, 04:00 UTC25m
2026-07-18 SKW5110 PIB → IAH Jul 18, 15:20 UTCJul 18, 15:55 UTC35m
2026-07-18 SKW403G IAH → AEX Jul 18, 00:10 UTCJul 18, 00:29 UTC20m
2026-07-17 SKW5044 - Jul 17, 21:25 UTCJul 17, 22:00 UTC35m
2026-07-17 SKW753F - Jul 17, 19:30 UTCJul 17, 20:00 UTC30m
2026-07-17 SKW5069 - Jul 17, 15:10 UTCJul 17, 16:40 UTC1h 30m
2026-07-17 SKW5069 SLN → IAH Jul 17, 15:13 UTCJul 17, 16:36 UTC1h 23m
2026-07-17 SKW483J IAH → SLN Jul 17, 00:30 UTCJul 17, 01:49 UTC1h 20m
2026-07-16 SKW5327 - Jul 16, 20:45 UTCJul 16, 22:25 UTC1h 40m

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 N962SW page for operator, model, and routing details .

Mode-S AD6539 frequently asked

What is Mode-S code AD6539?
AD6539 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N962SW.
Where is Mode-S AD6539 registered?
Mode-S code AD6539 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 AD6539 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD6539, octal 53262471, decimal 11,363,641.
What flights does AD6539 operate?
Mode-S AD6539 has broadcast 20 distinct callsigns, including SKW5064, SKW5559, SKW5224, SKW4631, SKW6074.