Apparatus

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sensors Mode-S transponder

A32FD5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N304SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A32FD5
Octal
50627725
Decimal
10,694,613
Country
US
Tail
N304SY
Type
E75L
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
699
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A32FD5.

Country allocation

The ICAO 24-bit address A32FD5 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
SKW3918 SkyWest Airlines 21 2026-07-23
SKW4097 SkyWest Airlines 20 2026-05-15
SKW4125 - 17 2026-07-16
SKW4033 SkyWest Airlines 16 2026-05-15
SKW3762 SkyWest Airlines 14 2026-05-04
SKW3890 SkyWest Airlines 13 2026-06-03
SKW3857 - 13 2026-07-12
SKW4107 SkyWest Airlines 12 2026-05-15
SKW3843 SkyWest Airlines 12 2026-05-07
SKW3804 SkyWest Airlines 12 2026-05-01
SKW3726 SkyWest Airlines 12 2026-07-25
SKW4443 - 11 2026-07-10
SKW3869 SkyWest Airlines 11 2026-05-06
SKW4109 SkyWest Airlines 10 2026-05-15
SKW3735 SkyWest Airlines 10 2026-07-22
SKW3935 SkyWest Airlines 9 2026-05-28
SKW3892 SkyWest Airlines 9 2026-07-20
SKW3744 SkyWest Airlines 9 2026-05-11
SKW3728 - 9 2026-06-27
SKW3719 SkyWest Airlines 9 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4062 BOS → BWI Jul 26, 21:00 UTCJul 26, 21:15 UTC15m
2026-07-26 SKW112J YVR → SEA Jul 26, 18:40 UTCJul 26, 19:10 UTC30m
2026-07-26 SKW123J SEA → YVR Jul 26, 16:35 UTCJul 26, 17:10 UTC35m
2026-07-26 SKW194R YVR → SEA Jul 26, 13:30 UTCJul 26, 14:00 UTC30m
2026-07-26 SKW162Z SEA → YVR Jul 26, 05:40 UTCJul 26, 06:15 UTC35m
2026-07-26 SKW4031 LAX → ABQ Jul 26, 01:40 UTCJul 26, 03:50 UTC2h 10m
2026-07-25 SKW4031 LAX → ABQ Jul 25, 22:15 UTCJul 26, 00:40 UTC2h 25m
2026-07-25 SKW4139 RAP → MSP Jul 25, 19:45 UTCJul 25, 20:30 UTC45m
2026-07-25 SKW155A BWI → BOS Jul 25, 17:05 UTCJul 25, 18:30 UTC1h 25m
2026-07-25 SKW3708 SEA → SFO Jul 25, 14:05 UTCJul 25, 15:30 UTC1h 25m
2026-07-25 SKW137C MDT → DTW Jul 25, 05:15 UTCJul 25, 06:45 UTC1h 30m
2026-07-25 SKW3726 EUG → SLC Jul 25, 01:55 UTCJul 25, 03:15 UTC1h 20m
2026-07-25 SKW3726 EUG → SLC Jul 25, 02:03 UTCJul 25, 03:04 UTC1h 1m
2026-07-24 SKW3726 EUG → SLC Jul 24, 23:45 UTCJul 25, 01:15 UTC1h 30m
2026-07-24 SKW4155 SLC → BZN Jul 24, 20:50 UTCJul 24, 22:15 UTC1h 25m
2026-07-24 SKW4149 EUG → SEA Jul 24, 18:45 UTCJul 24, 19:35 UTC50m
2026-07-24 SKW3749 ALB → DTW Jul 24, 17:00 UTCJul 24, 17:50 UTC50m
2026-07-24 SKW3873 MKE → BOS Jul 24, 04:50 UTCJul 24, 05:30 UTC40m
2026-07-24 SKW4141 RDM → SEA Jul 24, 02:40 UTCJul 24, 03:30 UTC50m
2026-07-24 SKW4141 RDM → SEA Jul 24, 00:45 UTCJul 24, 01:25 UTC40m
2026-07-23 SKW142Y DTW → ALB Jul 23, 22:50 UTCJul 23, 23:20 UTC30m
2026-07-23 SKW3748 SJC → SEA Jul 23, 21:05 UTCJul 23, 21:40 UTC35m
2026-07-23 SKW3818 SEA → PDX Jul 23, 18:35 UTCJul 23, 19:10 UTC35m
2026-07-23 SKW3818 SEA → PDX Jul 23, 16:45 UTCJul 23, 17:15 UTC30m
2026-07-23 SKW194R YVR → SEA Jul 23, 13:35 UTCJul 23, 14:05 UTC30m
2026-07-23 SKW146A ATL → SBN Jul 23, 03:30 UTCJul 23, 04:00 UTC30m
2026-07-23 SKW3918 MDW → MSP Jul 23, 01:10 UTCJul 23, 01:35 UTC25m
2026-07-23 SKW3918 MDW → MSP Jul 23, 01:04 UTCJul 23, 01:29 UTC25m
2026-07-22 SKW3918 MDW → MSP Jul 22, 23:35 UTCJul 23, 00:10 UTC35m
2026-07-22 SKW3735 SJC → LAX Jul 22, 20:40 UTCJul 22, 21:20 UTC40m
2026-07-22 SKW3735 SJC → LAX Jul 22, 20:44 UTCJul 22, 21:19 UTC35m
2026-07-22 SKW3735 SJC → LAX Jul 22, 18:45 UTCJul 22, 19:35 UTC50m
2026-07-22 SKW4075 LAX → OAK Jul 22, 15:09 UTCJul 22, 16:21 UTC1h 12m
2026-07-22 SKW4075 LAX → OAK Jul 22, 15:05 UTCJul 22, 16:25 UTC1h 20m
2026-07-22 SKW4131 HRL → AUS Jul 22, 03:35 UTCJul 22, 05:10 UTC1h 35m
2026-07-22 SKW3897 SJC → SEA Jul 22, 01:05 UTCJul 22, 02:40 UTC1h 35m
2026-07-22 SKW3897 SJC → SEA Jul 22, 01:01 UTCJul 22, 02:30 UTC1h 29m
2026-07-21 SKW3897 SEA → SJC Jul 21, 22:00 UTCJul 21, 23:55 UTC1h 55m
2026-07-21 SKW4139 RAP → MSP Jul 21, 19:50 UTCJul 21, 20:30 UTC40m
2026-07-21 SKW155A SLC → EUG Jul 21, 17:10 UTCJul 21, 18:35 UTC1h 25m
2026-07-21 SKW4004 ATL → SBN Jul 21, 12:15 UTCJul 21, 13:35 UTC1h 20m
2026-07-21 SKW3756 HPN → DTW Jul 21, 05:25 UTCJul 21, 06:45 UTC1h 20m
2026-07-21 SKW3726 EUG → SLC Jul 21, 02:20 UTCJul 21, 03:40 UTC1h 20m
2026-07-20 SKW3726 EUG → SLC Jul 20, 23:40 UTCJul 21, 01:10 UTC1h 30m
2026-07-20 SKW3892 ICT → MSP Jul 20, 21:25 UTCJul 20, 22:35 UTC1h 10m
2026-07-20 SKW3892 ICT → MSP Jul 20, 18:30 UTCJul 20, 19:35 UTC1h 5m
2026-07-20 SKW3719 LEX → DTW Jul 20, 16:15 UTCJul 20, 17:25 UTC1h 10m
2026-07-20 SKW3719 LEX → DTW Jul 20, 14:00 UTCJul 20, 15:00 UTC1h 0m
2026-07-19 SKW3896 - Jul 19, 23:10 UTCJul 20, 01:20 UTC2h 10m
2026-07-19 SKW3896 - Jul 19, 19:45 UTCJul 19, 21:35 UTC1h 50m

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 N304SY page for operator, model, and routing details .

Mode-S A32FD5 frequently asked

What is Mode-S code A32FD5?
A32FD5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N304SY.
Where is Mode-S A32FD5 registered?
Mode-S code A32FD5 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 A32FD5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A32FD5, octal 50627725, decimal 10,694,613.
What flights does A32FD5 operate?
Mode-S A32FD5 has broadcast 20 distinct callsigns, including SKW3918, SKW4097, SKW4125, SKW4033, SKW3762.