Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A37ED3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N324SY · operated by SKYWEST AIRLINES INC

Hex
A37ED3
Octal
50677323
Decimal
10,714,835
Country
US
Tail
N324SY
Type
E75L
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
665
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S A37ED3.

Country allocation

The ICAO 24-bit address A37ED3 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
SKW3999 - 12 2026-07-05
SKW3991 - 12 2026-06-25
SKW3907 SkyWest Airlines 10 2026-07-26
SKW3750 - 10 2026-06-25
SKW3699 SkyWest Airlines 10 2026-07-25
SKW4177 SkyWest Airlines 7 2026-07-26
SKW3974 SkyWest Airlines 7 2026-04-24
SKW3876 - 7 2026-07-17
SKW3818 SkyWest Airlines 7 2026-07-06
SKW4444 - 6 2026-07-15
SKW3935 SkyWest Airlines 6 2026-07-25
SKW3923 - 6 2026-07-03
SKW3914 SkyWest Airlines 6 2026-07-25
SKW3813 - 6 2026-07-18
SKW3637 SkyWest Airlines 6 2026-05-25
SKW197F - 6 2026-07-22
SKW4070 SkyWest Airlines 5 2026-06-22
SKW3989 - 5 2026-07-19
SKW3834 SkyWest Airlines 5 2026-07-25
SKW3759 - 5 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3734 LGA → OKC Jul 26, 20:50 UTCJul 26, 22:45 UTC1h 55m
2026-07-26 SKW4121 MDW → DTW Jul 26, 17:45 UTCJul 26, 18:35 UTC50m
2026-07-26 SKW4177 AUS → MFE Jul 26, 15:50 UTCJul 26, 16:40 UTC50m
2026-07-26 SKW3950 JFK → IAD Jul 26, 12:20 UTCJul 26, 14:35 UTC2h 15m
2026-07-26 SKW3930 SJC → LAX Jul 26, 10:05 UTCJul 26, 10:35 UTC30m
2026-07-26 SKW3907 MDW → MSP Jul 26, 03:00 UTCJul 26, 03:25 UTC25m
2026-07-25 SKW3935 LAX → SJC Jul 25, 22:50 UTCJul 25, 23:40 UTC50m
2026-07-25 SKW3935 LAX → SJC Jul 25, 22:50 UTCJul 25, 23:35 UTC45m
2026-07-25 SKW3935 LAX → SJC Jul 25, 20:35 UTCJul 25, 21:25 UTC50m
2026-07-25 SKW3699 OMA → LGA Jul 25, 16:00 UTCJul 25, 18:10 UTC2h 10m
2026-07-25 SKW3699 OMA → LGA Jul 25, 12:35 UTCJul 25, 14:30 UTC1h 55m
2026-07-25 SKW3914 SEA → SMF Jul 25, 10:15 UTCJul 25, 10:45 UTC30m
2026-07-25 SKW3914 SEA → SMF Jul 25, 10:15 UTCJul 25, 10:57 UTC42m
2026-07-25 SKW3834 GTF → MSP Jul 25, 02:55 UTCJul 25, 03:55 UTC1h 0m
2026-07-25 SKW4462 MSP → MKE Jul 25, 00:05 UTCJul 25, 01:00 UTC55m
2026-07-24 SKW4462 MSP → MKE Jul 24, 22:05 UTCJul 24, 22:50 UTC45m
2026-07-24 SKW4032 HPN → ATL Jul 24, 20:00 UTCJul 24, 20:50 UTC50m
2026-07-24 SKW4032 HPN → ATL Jul 24, 18:15 UTCJul 24, 18:55 UTC40m
2026-07-24 SKW3561 BOI → SEA Jul 24, 16:05 UTCJul 24, 16:45 UTC40m
2026-07-24 SKW3561 BOI → SEA Jul 24, 14:20 UTCJul 24, 14:55 UTC35m
2026-07-24 SKW3996 CRW → ATL Jul 24, 10:10 UTCJul 24, 12:30 UTC2h 20m
2026-07-24 SKW4129 HPN → ATL Jul 24, 01:10 UTCJul 24, 03:05 UTC1h 55m
2026-07-23 SKW3686 MSN → MSP Jul 23, 21:45 UTCJul 23, 22:15 UTC30m
2026-07-23 SKW3686 MSN → MSP Jul 23, 19:55 UTCJul 23, 20:15 UTC20m
2026-07-23 SKW3536 RST → MSP Jul 23, 17:10 UTCJul 23, 18:45 UTC1h 35m
2026-07-23 SKW3536 RST → MSP Jul 23, 14:30 UTCJul 23, 15:50 UTC1h 20m
2026-07-23 SKW3660 MSP → YYZ Jul 23, 11:45 UTCJul 23, 12:45 UTC1h 0m
2026-07-23 SKW135K LAX → SJC Jul 23, 03:05 UTCJul 23, 04:15 UTC1h 10m
2026-07-22 SKW4005 BIS → MSP Jul 22, 22:55 UTCJul 22, 23:50 UTC55m
2026-07-22 SKW182J MSP → YWG Jul 22, 20:30 UTCJul 22, 21:40 UTC1h 10m
2026-07-22 SKW157E YWG → MSP Jul 22, 17:57 UTCJul 22, 18:47 UTC50m
2026-07-22 SKW157E YWG → MSP Jul 22, 17:45 UTCJul 22, 18:50 UTC1h 5m
2026-07-22 SKW197F MSP → YWG Jul 22, 15:25 UTCJul 22, 16:30 UTC1h 5m
2026-07-22 SKW4458 - Jul 22, 13:15 UTCJul 22, 14:05 UTC50m
2026-07-22 SKW4458 MKE → MSP Jul 22, 13:20 UTCJul 22, 14:03 UTC43m
2026-07-22 SKW4468 MSP → MKE Jul 22, 01:45 UTCJul 22, 02:30 UTC45m
2026-07-21 SKW4012 SLC → ABQ Jul 21, 22:40 UTCJul 22, 00:10 UTC1h 30m
2026-07-21 SKW4012 SLC → ABQ Jul 21, 19:55 UTCJul 21, 21:10 UTC1h 15m
2026-07-21 SKW3699 IAD → MSP Jul 21, 16:00 UTCJul 21, 18:35 UTC2h 35m
2026-07-21 SKW3699 MSP → IAD Jul 21, 12:40 UTCJul 21, 14:45 UTC2h 5m
2026-07-21 SKW3914 - Jul 21, 10:30 UTCJul 21, 11:25 UTC55m
2026-07-21 SKW3834 MSP → BIS Jul 21, 03:07 UTCJul 21, 03:59 UTC52m
2026-07-21 SKW3834 - Jul 21, 02:50 UTCJul 21, 03:45 UTC55m
2026-07-20 SKW4012 SLC → ABQ Jul 20, 23:25 UTCJul 21, 01:05 UTC1h 39m
2026-07-20 SKW4012 SLC → ABQ Jul 20, 21:15 UTCJul 20, 22:35 UTC1h 20m
2026-07-20 SKW3536 - Jul 20, 18:10 UTCJul 20, 19:50 UTC1h 40m
2026-07-20 SKW3536 MSP → XNA Jul 20, 14:30 UTCJul 20, 15:50 UTC1h 20m
2026-07-20 SKW3996 IAD → MSP Jul 20, 10:30 UTCJul 20, 13:15 UTC2h 45m
2026-07-20 SKW4129 HPN → ATL Jul 20, 01:10 UTCJul 20, 03:10 UTC2h 0m
2026-07-19 SKW3935 - Jul 19, 23:00 UTCJul 19, 23:45 UTC45m

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 N324SY page for operator, model, and routing details .

Mode-S A37ED3 frequently asked

What is Mode-S code A37ED3?
A37ED3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N324SY.
Where is Mode-S A37ED3 registered?
Mode-S code A37ED3 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 A37ED3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A37ED3, octal 50677323, decimal 10,714,835.
What flights does A37ED3 operate?
Mode-S A37ED3 has broadcast 20 distinct callsigns, including SKW3999, SKW3991, SKW3907, SKW3750, SKW3699.