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sensors Mode-S transponder

A5B18A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N466SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
A5B18A
Octal
51330612
Decimal
10,858,890
Country
US
Tail
N466SW
Type
CRJ2
No current signal · last broadcast Jul 26, 16:15 UTC
Flights observed
124
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 16:15 UTC

Last known position

Most recent position reported by Mode-S A5B18A.

Country allocation

The ICAO 24-bit address A5B18A 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
SKW5128 - 4 2026-07-07
SKW5474 SkyWest Airlines 3 2026-07-23
SKW5466 - 3 2026-07-12
SKW5127 SkyWest Airlines 3 2026-07-21
SKW4797 SkyWest Airlines 3 2026-07-22
SKW4722 - 3 2026-07-11
SKW645V SkyWest Airlines 2 2026-07-24
SKW6065 - 2 2026-07-18
SKW6026 - 2 2026-07-07
SKW5959 - 2 2026-07-07
SKW5801 - 2 2026-07-11
SKW5590 SkyWest Airlines 2 2026-07-24
SKW5576 SkyWest Airlines 2 2026-07-17
SKW5522 - 2 2026-07-17
SKW5518 - 2 2026-07-17
SKW5409 - 2 2026-07-12
SKW5400 - 2 2026-07-16
SKW5226 SkyWest Airlines 2 2026-07-26
SKW5224 - 2 2026-07-16
SKW5221 SkyWest Airlines 2 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4736 DTW → ORD Jul 26, 15:20 UTCJul 26, 16:05 UTC45m
2026-07-26 SKW4736 DTW → ORD Jul 26, 15:06 UTCJul 26, 16:05 UTC59m
2026-07-26 SKW5226 OMA → SFO Jul 26, 03:05 UTCJul 26, 03:50 UTC45m
2026-07-26 SKW5226 OMA → SFO Jul 26, 03:06 UTCJul 26, 03:48 UTC42m
2026-07-25 SKW6064 MEI → IAH Jul 25, 21:05 UTCJul 26, 01:30 UTC4h 25m
2026-07-25 SKW5742 ASE → ORD Jul 25, 19:25 UTCJul 25, 20:00 UTC35m
2026-07-25 SKW4674 GEG → SFO Jul 25, 16:45 UTCJul 25, 17:15 UTC30m
2026-07-25 SKW5221 AMA → DEN Jul 25, 13:22 UTCJul 25, 14:08 UTC46m
2026-07-25 SKW5221 AMA → DEN Jul 25, 01:50 UTCJul 25, 14:25 UTC12h 35m
2026-07-24 SKW5028 SUX → ORD Jul 24, 16:25 UTCJul 24, 18:10 UTC1h 45m
2026-07-24 SKW645V DEN → YQR Jul 24, 02:35 UTCJul 24, 03:25 UTC50m
2026-07-24 SKW645V DEN → YQR Jul 24, 02:17 UTCJul 24, 04:25 UTC2h 8m
2026-07-24 SKW5590 SFO → SLC Jul 24, 00:45 UTCJul 24, 01:10 UTC25m
2026-07-23 SKW5590 SFO → SLC Jul 23, 23:55 UTCJul 24, 00:05 UTC10m
2026-07-23 SKW5845 DCA → ORD Jul 23, 20:10 UTCJul 23, 21:20 UTC1h 10m
2026-07-23 SKW5061 EWR → IAH Jul 23, 18:15 UTCJul 23, 18:50 UTC35m
2026-07-23 SKW5039 ORD → CMX Jul 23, 05:35 UTCJul 23, 06:00 UTC25m
2026-07-23 SKW5039 ORD → CMX Jul 23, 05:28 UTCJul 23, 06:39 UTC1h 11m
2026-07-23 SKW5474 SJC → DEN Jul 23, 03:10 UTCJul 23, 03:55 UTC45m
2026-07-22 SKW4797 LAX → EUG Jul 22, 19:45 UTCJul 22, 20:17 UTC32m
2026-07-22 SKW4797 LAX → EUG Jul 22, 19:40 UTCJul 22, 20:20 UTC40m
2026-07-22 SKW6078 ORD → PAH Jul 22, 14:15 UTCJul 22, 18:20 UTC4h 5m
2026-07-22 SKW5109 - Jul 22, 11:40 UTCJul 22, 12:40 UTC1h 0m
2026-07-22 SKW393X DEN → EAR Jul 22, 03:45 UTCJul 22, 04:30 UTC45m
2026-07-21 SKW5474 SJC → DEN Jul 21, 21:45 UTCJul 21, 22:40 UTC55m
2026-07-21 SKW5474 SJC → DEN Jul 21, 21:51 UTCJul 21, 22:41 UTC50m
2026-07-21 SKW4797 LAX → EUG Jul 21, 20:10 UTCJul 21, 20:50 UTC40m
2026-07-21 SKW5127 PRC → DEN Jul 21, 15:45 UTCJul 21, 17:10 UTC1h 25m
2026-07-21 SKW5127 PRC → DEN Jul 21, 15:55 UTCJul 21, 17:05 UTC1h 10m
2026-07-21 SKW337Y DEN → LBF Jul 21, 03:30 UTCJul 21, 04:50 UTC1h 20m
2026-07-20 SKW4650 DEN → SJC Jul 20, 23:55 UTCJul 21, 01:00 UTC1h 5m
2026-07-20 SKW4734 DEN → COS Jul 20, 21:15 UTCJul 20, 22:10 UTC55m
2026-07-20 SKW4734 DEN → COS Jul 20, 21:17 UTCJul 20, 22:29 UTC1h 12m
2026-07-20 SKW5127 PRC → DEN Jul 20, 15:45 UTCJul 20, 17:10 UTC1h 25m
2026-07-20 SKW337Y DEN → LBF Jul 20, 04:40 UTCJul 20, 05:55 UTC1h 15m
2026-07-19 SKW5116 RKS → DEN Jul 19, 21:08 UTCJul 19, 22:16 UTC1h 8m
2026-07-19 SKW380F - Jul 19, 19:25 UTCJul 19, 19:50 UTC25m
2026-07-19 SKW5126 - Jul 19, 16:40 UTCJul 19, 17:10 UTC30m
2026-07-19 SKW566Z - Jul 19, 14:25 UTCJul 19, 15:00 UTC35m
2026-07-19 SKW5054 - Jul 19, 11:25 UTCJul 19, 12:50 UTC1h 25m
2026-07-18 SKW5077 SUX → ORD Jul 18, 22:45 UTCJul 18, 23:45 UTC1h 0m
2026-07-18 SKW6065 - Jul 18, 20:35 UTCJul 18, 21:10 UTC35m
2026-07-18 SKW6065 - Jul 18, 18:30 UTCJul 18, 19:05 UTC35m
2026-07-18 SKW4631 - Jul 18, 15:35 UTCJul 18, 16:15 UTC40m
2026-07-18 SKW4771 ORD → ICT Jul 18, 13:55 UTCJul 18, 14:35 UTC40m
2026-07-18 SKW5130 - Jul 18, 11:55 UTCJul 18, 12:20 UTC25m
2026-07-18 SKW355X DEN → RIW Jul 18, 02:55 UTCJul 18, 03:30 UTC35m
2026-07-17 SKW719V DEN → DEN Jul 17, 21:00 UTCJul 18, 01:39 UTC4h 40m
2026-07-17 SKW5522 - Jul 17, 16:55 UTCJul 17, 17:35 UTC40m
2026-07-17 SKW5522 GCC → DEN Jul 17, 16:46 UTCJul 17, 17:35 UTC49m

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 N466SW page for operator, model, and routing details .

Mode-S A5B18A frequently asked

What is Mode-S code A5B18A?
A5B18A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N466SW.
Where is Mode-S A5B18A registered?
Mode-S code A5B18A 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 A5B18A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5B18A, octal 51330612, decimal 10,858,890.
What flights does A5B18A operate?
Mode-S A5B18A has broadcast 20 distinct callsigns, including SKW5128, SKW5474, SKW5466, SKW5127, SKW4797.