Apparatus

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sensors Mode-S transponder

AD48DF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N955SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
AD48DF
Octal
53244337
Decimal
11,356,383
Country
US
Tail
N955SW
Type
CRJ2
No current signal · last broadcast 4h ago
Flights observed
359
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S AD48DF.

Country allocation

The ICAO 24-bit address AD48DF 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
SKW5067 - 6 2026-06-20
SKW6055 SkyWest Airlines 4 2026-05-04
SKW5196 - 4 2026-07-01
SKW5141 SkyWest Airlines 4 2026-06-23
SKW5110 SkyWest Airlines 4 2026-05-13
SKW5029 - 4 2026-06-22
SKW4677 SkyWest Airlines 4 2026-05-19
SKW437F SkyWest Airlines 4 2026-05-22
SKW792R SkyWest Airlines 3 2026-05-28
SKW6082 - 3 2026-07-11
SKW6067 SkyWest Airlines 3 2026-06-12
SKW5915 - 3 2026-06-19
SKW5888 SkyWest Airlines 3 2026-05-02
SKW576U SkyWest Airlines 3 2026-06-22
SKW5482 SkyWest Airlines 3 2026-04-18
SKW5294 SkyWest Airlines 3 2026-05-29
SKW5269 - 3 2026-06-18
SKW5198 SkyWest Airlines 3 2026-05-25
SKW5139 - 3 2026-06-16
SKW5114 SkyWest Airlines 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW5258 - Jul 14, 00:00 UTCJul 14, 00:40 UTC40m
2026-07-13 SKW4718 LNK → ORD Jul 13, 20:21 UTCJul 13, 21:30 UTC1h 9m
2026-07-13 SKW4718 - Jul 13, 20:25 UTCJul 13, 21:45 UTC1h 20m
2026-07-13 SKW5244 - Jul 13, 18:15 UTCJul 13, 19:20 UTC1h 5m
2026-07-11 SKW5675 - Jul 11, 23:35 UTCJul 12, 00:20 UTC45m
2026-07-11 SKW6082 - Jul 11, 14:30 UTCJul 11, 14:45 UTC15m
2026-07-11 SKW6082 ORD → SBN Jul 11, 14:16 UTCJul 11, 14:45 UTC29m
2026-07-09 SKW5208 - Jul 9, 17:40 UTCJul 9, 19:25 UTC1h 45m
2026-07-08 SKW6085 - Jul 8, 01:55 UTCJul 8, 02:30 UTC35m
2026-07-06 SKW6080 - Jul 6, 16:40 UTCJul 6, 16:50 UTC10m
2026-07-06 SKW6080 DDC → SLN Jul 6, 16:06 UTCJul 6, 16:54 UTC48m
2026-07-03 SKW5115 DDC → DEN Jul 3, 17:05 UTCJul 3, 17:35 UTC30m
2026-07-03 SKW5115 DDC → DEN Jul 3, 17:06 UTCJul 3, 17:43 UTC37m
2026-07-03 SKW5194 SLC → DEN Jul 3, 15:00 UTCJul 3, 16:05 UTC1h 5m
2026-07-01 SKW5196 DEN → SLC Jul 1, 17:25 UTCJul 1, 18:30 UTC1h 5m
2026-07-01 SKW5196 DEN → SLC Jul 1, 17:24 UTCJul 1, 18:21 UTC57m
2026-06-28 SKW5032 COD → DEN Jun 28, 18:09 UTCJun 28, 19:00 UTC51m
2026-06-28 SKW406P DEN → DEN Jun 28, 03:29 UTCJun 28, 19:04 UTC15h 35m
2026-06-27 SKW5024 - Jun 27, 20:59 UTCJun 27, 21:19 UTC20m
2026-06-27 SKW5024 CYS → DEN Jun 27, 20:47 UTCJun 27, 21:14 UTC27m
2026-06-27 SKW543V DEN → CYS Jun 27, 18:49 UTCJun 27, 19:15 UTC25m
2026-06-27 SKW5400 COS → DEN Jun 27, 16:35 UTCJun 27, 17:04 UTC30m
2026-06-27 SKW741Y DEN → COS Jun 27, 05:25 UTCJun 27, 05:44 UTC20m
2026-06-27 SKW5057 - Jun 27, 01:24 UTCJun 27, 02:50 UTC1h 25m
2026-06-26 SKW768J - Jun 26, 23:25 UTCJun 27, 00:39 UTC1h 15m
2026-06-26 SKW422W - Jun 26, 20:50 UTCJun 26, 22:34 UTC1h 45m
2026-06-26 SKW5015 BFF → DEN Jun 26, 18:34 UTCJun 26, 20:00 UTC1h 25m
2026-06-26 SKW5015 BFF → DEN Jun 26, 18:31 UTCJun 26, 19:47 UTC1h 16m
2026-06-26 SKW5082 - Jun 26, 00:30 UTCJun 26, 01:54 UTC1h 25m
2026-06-25 SKW489J ORD → FOD Jun 25, 22:24 UTCJun 25, 23:09 UTC45m
2026-06-25 SKW6075 - Jun 25, 18:45 UTCJun 25, 20:05 UTC1h 20m
2026-06-25 SKW484C ICT → ORD Jun 25, 16:05 UTCJun 25, 17:34 UTC1h 30m
2026-06-25 SKW484C ICT → ORD Jun 25, 16:19 UTCJun 25, 17:32 UTC1h 13m
2026-06-23 SKW5141 DEN → SGU Jun 23, 22:40 UTCJun 23, 23:29 UTC50m
2026-06-23 SKW5141 DEN → SGU Jun 23, 21:49 UTCJun 23, 23:21 UTC1h 32m
2026-06-23 SKW5034 - Jun 23, 02:04 UTCJun 23, 02:40 UTC35m
2026-06-22 SKW5029 - Jun 22, 22:44 UTCJun 23, 00:09 UTC1h 25m
2026-06-22 SKW5022 LAR → DEN Jun 22, 20:19 UTCJun 22, 20:49 UTC30m
2026-06-22 SKW576U IAD → JST Jun 22, 17:10 UTCJun 22, 18:35 UTC1h 25m
2026-06-22 SKW5046 - Jun 22, 10:49 UTCJun 22, 11:14 UTC25m
2026-06-22 SKW572U ORD → JST Jun 22, 05:04 UTCJun 22, 06:10 UTC1h 5m
2026-06-22 SKW6077 - Jun 22, 02:14 UTCJun 22, 02:50 UTC35m
2026-06-22 SKW5032 ORD → DEC Jun 22, 00:42 UTCJun 22, 01:28 UTC46m
2026-06-21 SKW5249 SAN → LAX Jun 21, 22:49 UTCJun 21, 23:14 UTC25m
2026-06-21 SKW5505 - Jun 21, 20:50 UTCJun 21, 21:05 UTC15m
2026-06-21 SKW5617 - Jun 21, 18:50 UTCJun 21, 19:34 UTC45m
2026-06-21 SKW6009 ORD → MKE Jun 21, 17:29 UTCJun 21, 17:30 UTC1m
2026-06-21 SKW5335 - Jun 21, 15:05 UTCJun 21, 15:40 UTC35m
2026-06-21 SKW5335 FWA → ORD Jun 21, 15:09 UTCJun 21, 15:23 UTC14m
2026-06-20 SKW325U ORD → FWA Jun 20, 23:25 UTCJun 20, 23:50 UTC25m

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 N955SW page for operator, model, and routing details .

Mode-S AD48DF frequently asked

What is Mode-S code AD48DF?
AD48DF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N955SW.
Where is Mode-S AD48DF registered?
Mode-S code AD48DF 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 AD48DF 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 AD48DF, octal 53244337, decimal 11,356,383.
What flights does AD48DF operate?
Mode-S AD48DF has broadcast 20 distinct callsigns, including SKW5067, SKW6055, SKW5196, SKW5141, SKW5110.