Apparatus

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sensors Mode-S transponder

A2B348

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N273SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A2B348
Octal
50531510
Decimal
10,662,728
Country
US
Tail
N273SY
Type
E75L
Broadcasting now · callsign SKW4441 · 20,175 ft
Flights observed
515
Distinct callsigns
20
Country
US
Last broadcast
7d ago

Current position

A2B348 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2B348 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
SKW4082 SkyWest Airlines 20 2026-07-24
SKW3507 SkyWest Airlines 20 2026-07-07
SKW4102 SkyWest Airlines 18 2026-05-26
SKW4111 SkyWest Airlines 16 2026-07-06
SKW3771 - 16 2026-07-19
SKW3925 - 13 2026-07-20
SKW4448 - 12 2026-07-13
SKW4019 - 12 2026-07-08
SKW3710 SkyWest Airlines 12 2026-05-25
SKW4442 - 11 2026-07-12
SKW4117 SkyWest Airlines 11 2026-07-07
SKW3716 - 11 2026-07-21
SKW3681 SkyWest Airlines 11 2026-05-25
SKW4473 - 10 2026-07-19
SKW4095 SkyWest Airlines 10 2026-07-25
SKW172E - 10 2026-07-08
SKW3842 SkyWest Airlines 9 2026-07-21
SKW3805 SkyWest Airlines 9 2026-07-23
SKW4454 SkyWest Airlines 8 2026-05-08
SKW4097 SkyWest Airlines 8 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4134 OAK → SLC Jul 26, 19:35 UTCJul 26, 21:00 UTC1h 25m
2026-07-26 SKW4134 OAK → SLC Jul 26, 17:05 UTCJul 26, 18:40 UTC1h 35m
2026-07-26 SKW4037 SUN → SLC Jul 26, 13:40 UTCJul 26, 14:10 UTC30m
2026-07-26 SKW4037 SUN → SLC Jul 26, 13:37 UTCJul 26, 14:08 UTC31m
2026-07-26 SKW3985 CLE → BOS Jul 26, 03:10 UTCJul 26, 03:35 UTC25m
2026-07-25 SKW3737 DTW → MDW Jul 25, 23:45 UTCJul 26, 01:05 UTC1h 20m
2026-07-25 SKW3776 SJC → SEA Jul 25, 21:30 UTCJul 25, 22:45 UTC1h 15m
2026-07-25 SKW4133 SJC → SEA Jul 25, 18:50 UTCJul 25, 20:20 UTC1h 30m
2026-07-25 SKW4011 MSP → MOT Jul 25, 14:25 UTCJul 25, 17:10 UTC2h 45m
2026-07-25 SKW3504 MSN → MSP Jul 25, 12:03 UTCJul 25, 12:54 UTC51m
2026-07-25 SKW3504 MSN → MSP Jul 25, 11:35 UTCJul 25, 11:45 UTC10m
2026-07-25 SKW4095 ATL → FWA Jul 25, 02:30 UTCJul 25, 03:45 UTC1h 15m
2026-07-25 SKW3579 MSP → MSN Jul 25, 00:50 UTCJul 25, 01:20 UTC30m
2026-07-24 SKW3579 MSP → MSN Jul 24, 23:20 UTCJul 24, 23:50 UTC30m
2026-07-24 SKW4082 SEA → SFO Jul 24, 21:25 UTCJul 24, 22:05 UTC40m
2026-07-24 SKW4082 SEA → SFO Jul 24, 17:05 UTCJul 24, 19:10 UTC2h 5m
2026-07-24 SKW4082 SEA → SFO Jul 24, 14:35 UTCJul 24, 16:05 UTC1h 30m
2026-07-24 SKW3504 MSN → MSP Jul 24, 11:55 UTCJul 24, 13:15 UTC1h 20m
2026-07-23 SKW3505 DTW → OMA Jul 23, 23:15 UTCJul 24, 00:50 UTC1h 35m
2026-07-23 SKW3805 MDT → ATL Jul 23, 21:00 UTCJul 23, 22:00 UTC1h 0m
2026-07-23 SKW3805 MDT → ATL Jul 23, 18:35 UTCJul 23, 19:40 UTC1h 5m
2026-07-23 SKW4097 CMH → MSP Jul 23, 15:55 UTCJul 23, 17:20 UTC1h 25m
2026-07-23 SKW4097 CMH → MSP Jul 23, 13:30 UTCJul 23, 15:00 UTC1h 30m
2026-07-23 SKW4107 MSP → CMH Jul 23, 10:15 UTCJul 23, 11:40 UTC1h 25m
2026-07-22 SKW4109 MSP → MSN Jul 22, 23:55 UTCJul 23, 01:20 UTC1h 25m
2026-07-22 SKW4033 HPN → ATL Jul 22, 21:15 UTCJul 22, 22:40 UTC1h 25m
2026-07-22 SKW4033 HPN → ATL Jul 22, 18:45 UTCJul 22, 20:10 UTC1h 25m
2026-07-22 SKW3924 - Jul 22, 14:45 UTCJul 22, 17:30 UTC2h 45m
2026-07-22 SKW3704 GFK → MSP Jul 22, 00:25 UTCJul 22, 01:55 UTC1h 30m
2026-07-21 SKW3842 MSP → RAP Jul 21, 22:15 UTCJul 21, 23:15 UTC1h 0m
2026-07-21 SKW3842 MSP → RAP Jul 21, 20:15 UTCJul 21, 21:05 UTC50m
2026-07-21 SKW3716 - Jul 21, 18:25 UTCJul 21, 18:55 UTC30m
2026-07-21 SKW3716 - Jul 21, 16:20 UTCJul 21, 16:50 UTC30m
2026-07-21 SKW3502 - Jul 21, 13:30 UTCJul 21, 14:35 UTC1h 5m
2026-07-21 SKW3846 LAX → TUS Jul 21, 02:25 UTCJul 21, 03:30 UTC1h 5m
2026-07-20 SKW3778 MOT → MSP Jul 20, 23:55 UTCJul 21, 01:00 UTC1h 5m
2026-07-20 SKW3717 SLC → TUS Jul 20, 21:05 UTCJul 20, 22:40 UTC1h 35m
2026-07-20 SKW3718 BNA → JFK Jul 20, 18:25 UTCJul 20, 19:55 UTC1h 30m
2026-07-20 SKW3718 BNA → JFK Jul 20, 15:50 UTCJul 20, 17:20 UTC1h 30m
2026-07-20 SKW4022 YUL → DTW Jul 20, 14:10 UTCJul 20, 14:40 UTC30m
2026-07-20 SKW3925 - Jul 20, 00:10 UTCJul 20, 01:55 UTC1h 45m
2026-07-19 SKW4473 RST → MSP Jul 19, 22:00 UTCJul 19, 22:30 UTC30m
2026-07-19 SKW4473 RST → MSP Jul 19, 21:57 UTCJul 19, 22:26 UTC29m
2026-07-19 SKW4473 MSP → RST Jul 19, 20:35 UTCJul 19, 20:50 UTC15m
2026-07-19 SKW3771 - Jul 19, 18:25 UTCJul 19, 19:05 UTC40m
2026-07-19 SKW3771 MSP → FAR Jul 19, 16:25 UTCJul 19, 17:10 UTC45m
2026-07-19 SKW3807 JAC → MSP Jul 19, 13:22 UTCJul 19, 15:02 UTC1h 40m
2026-07-19 SKW3807 MSP → MSP Jul 19, 00:00 UTCJul 19, 15:05 UTC15h 5m
2026-07-18 SKW4473 RST → MSP Jul 18, 22:05 UTCJul 18, 22:30 UTC25m
2026-07-18 SKW4473 RST → MSP Jul 18, 22:11 UTCJul 18, 22:29 UTC18m

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 N273SY page for operator, model, and routing details .

Mode-S A2B348 frequently asked

What is Mode-S code A2B348?
A2B348 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N273SY.
Where is Mode-S A2B348 registered?
Mode-S code A2B348 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 A2B348 broadcasting right now?
Yes. Mode-S A2B348 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B348, octal 50531510, decimal 10,662,728.
What flights does A2B348 operate?
Mode-S A2B348 has broadcast 20 distinct callsigns, including SKW4082, SKW3507, SKW4102, SKW4111, SKW3771.