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sensors Mode-S transponder

AAA4B3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N785SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
AAA4B3
Octal
52522263
Decimal
11,183,283
Country
US
Tail
N785SK
Type
CRJ7
No current signal · last broadcast Jul 26, 21:25 UTC
Flights observed
541
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:25 UTC

Last known position

Most recent position reported by Mode-S AAA4B3.

Country allocation

The ICAO 24-bit address AAA4B3 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
SKW5661 SkyWest Airlines 13 2026-07-22
SKW5866 SkyWest Airlines 10 2026-07-22
SKW5330 - 7 2026-07-13
SKW5310 SkyWest Airlines 7 2026-07-25
SKW5274 SkyWest Airlines 7 2026-07-01
SKW4807 SkyWest Airlines 7 2026-06-09
SKW5878 SkyWest Airlines 6 2026-07-25
SKW5824 SkyWest Airlines 6 2026-07-22
SKW5723 - 6 2026-06-24
SKW5622 SkyWest Airlines 6 2026-06-01
SKW5431 - 6 2026-06-18
SKW5357 - 6 2026-07-17
SKW5348 - 6 2026-06-13
SKW5336 - 6 2026-07-01
SKW4778 - 6 2026-07-05
SKW5977 - 5 2026-07-02
SKW5964 SkyWest Airlines 5 2026-07-26
SKW5869 SkyWest Airlines 5 2026-05-02
SKW5827 SkyWest Airlines 5 2026-06-18
SKW5714 - 5 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4781 AUS → LAX Jul 26, 20:50 UTCJul 26, 21:25 UTC35m
2026-07-26 SKW5912 LNK → ORD Jul 26, 15:55 UTCJul 26, 17:15 UTC1h 20m
2026-07-26 SKW5826 SFO → EGE Jul 26, 14:05 UTCJul 26, 15:05 UTC1h 0m
2026-07-26 SKW5239 ORD → FSD Jul 26, 11:15 UTCJul 26, 12:50 UTC1h 35m
2026-07-26 SKW5964 FCA → SFO Jul 26, 03:00 UTCJul 26, 04:35 UTC1h 35m
2026-07-26 SKW4799 ORD → CRW Jul 26, 00:45 UTCJul 26, 01:35 UTC50m
2026-07-25 SKW5643 ORD → TYS Jul 25, 22:25 UTCJul 25, 23:30 UTC1h 5m
2026-07-25 SKW5643 ORD → TYS Jul 25, 22:08 UTCJul 25, 23:33 UTC1h 25m
2026-07-25 SKW5878 SFO → SBA Jul 25, 20:05 UTCJul 25, 20:50 UTC45m
2026-07-25 SKW5310 DEN → SAF Jul 25, 17:40 UTCJul 25, 18:20 UTC40m
2026-07-25 SKW5495 ORD → MKE Jul 25, 13:20 UTCJul 25, 14:10 UTC50m
2026-07-25 SKW4684 DEN → SAF Jul 25, 01:35 UTCJul 25, 02:25 UTC50m
2026-07-24 SKW5472 ORD → CHA Jul 24, 22:50 UTCJul 25, 00:10 UTC1h 20m
2026-07-24 SKW394Y DEN → MAF Jul 24, 20:00 UTCJul 24, 21:05 UTC1h 5m
2026-07-24 SKW5522 LEX → ORD Jul 24, 17:05 UTCJul 24, 17:50 UTC45m
2026-07-24 SKW5518 - Jul 24, 15:00 UTCJul 24, 15:30 UTC30m
2026-07-24 SKW5239 ORD → FSD Jul 24, 12:05 UTCJul 24, 13:35 UTC1h 30m
2026-07-24 SKW5964 FCA → SFO Jul 24, 02:50 UTCJul 24, 04:20 UTC1h 30m
2026-07-23 SKW5805 SNA → SFO Jul 23, 22:47 UTCJul 24, 00:14 UTC1h 27m
2026-07-23 SKW5556 PSC → SFO Jul 23, 21:05 UTCJul 23, 21:35 UTC30m
2026-07-23 SKW5319 GEG → SFO Jul 23, 16:55 UTCJul 23, 18:15 UTC1h 20m
2026-07-23 SKW5975 DEN → FSD Jul 23, 14:10 UTCJul 23, 15:15 UTC1h 5m
2026-07-23 SKW5975 DEN → FSD Jul 23, 14:01 UTCJul 23, 15:14 UTC1h 13m
2026-07-23 SKW5794 AVL → ORD Jul 23, 11:30 UTCJul 23, 12:50 UTC1h 20m
2026-07-23 SKW5252 FAT → LAX Jul 23, 03:50 UTCJul 23, 05:00 UTC1h 10m
2026-07-23 SKW5805 SNA → SFO Jul 23, 01:55 UTCJul 23, 02:50 UTC55m
2026-07-22 SKW5556 PSC → SFO Jul 22, 20:00 UTCJul 22, 20:25 UTC25m
2026-07-22 SKW5661 PHL → ORD Jul 22, 16:35 UTCJul 22, 17:25 UTC50m
2026-07-22 SKW4731 DEN → SAF Jul 22, 14:35 UTCJul 22, 15:20 UTC45m
2026-07-22 SKW5866 LNK → DEN Jul 22, 11:35 UTCJul 22, 12:45 UTC1h 10m
2026-07-22 SKW5824 ORD → FNT Jul 22, 04:20 UTCJul 22, 05:20 UTC1h 0m
2026-07-22 SKW5319 FSD → DEN Jul 22, 00:45 UTCJul 22, 02:00 UTC1h 15m
2026-07-21 SKW6089 FWA → FAR Jul 21, 22:15 UTCJul 22, 00:00 UTC1h 45m
2026-07-21 SKW6089 FWA → FAR Jul 21, 22:15 UTCJul 21, 23:55 UTC1h 40m
2026-07-20 SKW5142 SBN → ORD Jul 20, 20:15 UTCJul 20, 21:20 UTC1h 5m
2026-07-19 SKW5172 MTY → SFO Jul 19, 18:25 UTCJul 19, 18:55 UTC30m
2026-07-18 SKW5556 - Jul 18, 19:35 UTCJul 18, 20:05 UTC30m
2026-07-18 SKW4677 - Jul 18, 15:00 UTCJul 18, 15:25 UTC25m
2026-07-18 SKW764Y DEN → COS Jul 18, 03:25 UTCJul 18, 03:45 UTC20m
2026-07-17 SKW5357 - Jul 17, 20:00 UTCJul 18, 01:00 UTC5h 0m
2026-07-17 SKW5825 - Jul 17, 17:05 UTCJul 17, 18:05 UTC1h 0m
2026-07-17 SKW5215 DPA → LNK Jul 17, 15:10 UTCJul 17, 16:15 UTC1h 5m
2026-07-17 SKW4646 CAK → ORD Jul 17, 11:04 UTCJul 17, 12:04 UTC1h 0m
2026-07-17 SKW5982 - Jul 17, 02:39 UTCJul 17, 03:30 UTC50m
2026-07-16 SKW4723 - Jul 16, 23:35 UTCJul 17, 00:14 UTC40m
2026-07-16 SKW4781 - Jul 16, 22:05 UTCJul 16, 22:35 UTC30m
2026-07-16 SKW5603 - Jul 16, 19:14 UTCJul 16, 20:35 UTC1h 20m
2026-07-16 SKW5467 ORD → SDF Jul 16, 17:00 UTCJul 16, 17:49 UTC50m
2026-07-16 SKW5853 - Jul 16, 13:05 UTCJul 16, 14:20 UTC1h 15m
2026-07-16 SKW5853 XNA → ORD Jul 16, 12:33 UTCJul 16, 14:19 UTC1h 46m

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 N785SK page for operator, model, and routing details .

Mode-S AAA4B3 frequently asked

What is Mode-S code AAA4B3?
AAA4B3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N785SK.
Where is Mode-S AAA4B3 registered?
Mode-S code AAA4B3 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 AAA4B3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAA4B3, octal 52522263, decimal 11,183,283.
What flights does AAA4B3 operate?
Mode-S AAA4B3 has broadcast 20 distinct callsigns, including SKW5661, SKW5866, SKW5330, SKW5310, SKW5274.