Apparatus

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sensors Mode-S transponder

A32C1E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N303SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A32C1E
Octal
50626036
Decimal
10,693,662
Country
US
Tail
N303SY
Type
E75L
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
736
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A32C1E.

Country allocation

The ICAO 24-bit address A32C1E 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
SKW4141 SkyWest Airlines 14 2026-07-25
SKW4062 SkyWest Airlines 14 2026-07-24
SKW123J SkyWest Airlines 13 2026-07-24
SKW4125 - 12 2026-07-11
SKW3897 - 11 2026-07-21
SKW3891 - 11 2026-06-30
SKW3786 - 11 2026-07-19
SKW112J SkyWest Airlines 11 2026-07-24
SKW4449 - 9 2026-07-17
SKW4443 - 9 2026-07-16
SKW3987 - 9 2026-07-23
SKW3857 SkyWest Airlines 9 2026-05-10
SKW3820 SkyWest Airlines 9 2026-06-05
SKW3818 SkyWest Airlines 9 2026-07-21
SKW3748 SkyWest Airlines 9 2026-07-21
SKW3736 SkyWest Airlines 9 2026-07-08
SKW142Y SkyWest Airlines 9 2026-07-21
SKW4128 - 8 2026-06-30
SKW3869 SkyWest Airlines 8 2026-04-21
SKW3852 - 8 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3801 JFK → IAD Jul 26, 20:50 UTCJul 26, 21:15 UTC25m
2026-07-26 SKW3779 OAK → SLC Jul 26, 18:40 UTCJul 26, 19:55 UTC1h 15m
2026-07-26 SKW4092 GEG → LAX Jul 26, 14:37 UTCJul 26, 16:03 UTC1h 26m
2026-07-26 SKW4092 GEG → LAX Jul 26, 03:05 UTCJul 26, 16:15 UTC13h 11m
2026-07-26 SKW3918 MDW → MSP Jul 26, 01:15 UTCJul 26, 01:50 UTC35m
2026-07-25 SKW3918 MDW → MSP Jul 25, 23:40 UTCJul 26, 00:10 UTC30m
2026-07-25 SKW3802 SJC → SEA Jul 25, 22:00 UTCJul 25, 22:30 UTC30m
2026-07-25 SKW3802 SJC → SEA Jul 25, 20:30 UTCJul 25, 21:05 UTC35m
2026-07-25 SKW3802 SJC → SEA Jul 25, 20:29 UTCJul 25, 20:59 UTC30m
2026-07-25 SKW3740 ORD → JFK Jul 25, 18:05 UTCJul 25, 19:15 UTC1h 10m
2026-07-25 SKW4090 MOT → MSP Jul 25, 04:40 UTCJul 25, 05:40 UTC1h 0m
2026-07-25 SKW4141 RDM → SEA Jul 25, 02:45 UTCJul 25, 03:30 UTC45m
2026-07-25 SKW4141 RDM → SEA Jul 25, 00:50 UTCJul 25, 01:35 UTC45m
2026-07-24 SKW4062 BOS → BWI Jul 24, 22:40 UTCJul 24, 23:10 UTC30m
2026-07-24 SKW4062 BOS → BWI Jul 24, 21:00 UTCJul 24, 21:30 UTC30m
2026-07-24 SKW112J YVR → SEA Jul 24, 18:35 UTCJul 24, 19:05 UTC30m
2026-07-24 SKW123J SEA → YVR Jul 24, 17:00 UTCJul 24, 17:35 UTC35m
2026-07-24 SKW3790 RIC → DTW Jul 24, 14:05 UTCJul 24, 15:10 UTC1h 5m
2026-07-24 SKW3677 BOS → EWR Jul 24, 03:30 UTCJul 24, 04:10 UTC40m
2026-07-24 SKW4124 EUG → SEA Jul 24, 01:55 UTCJul 24, 02:40 UTC45m
2026-07-24 SKW181H ORD → BOS Jul 24, 00:20 UTCJul 24, 01:05 UTC45m
2026-07-23 SKW4062 BOS → BWI Jul 23, 22:40 UTCJul 23, 23:10 UTC30m
2026-07-23 SKW4062 BOS → BWI Jul 23, 21:00 UTCJul 23, 21:30 UTC30m
2026-07-23 SKW112J YVR → SEA Jul 23, 19:00 UTCJul 23, 19:30 UTC30m
2026-07-23 SKW112J YVR → SEA Jul 23, 19:04 UTCJul 23, 19:27 UTC23m
2026-07-23 SKW123J SEA → YVR Jul 23, 17:35 UTCJul 23, 18:10 UTC35m
2026-07-23 SKW3987 YVR → SEA Jul 23, 14:40 UTCJul 23, 15:10 UTC30m
2026-07-23 SKW162Z SEA → YVR Jul 23, 05:10 UTCJul 23, 05:40 UTC30m
2026-07-23 SKW4141 RDM → SEA Jul 23, 03:10 UTCJul 23, 03:50 UTC40m
2026-07-23 SKW4141 RDM → SEA Jul 23, 00:40 UTCJul 23, 01:40 UTC1h 0m
2026-07-22 SKW4062 BOS → BWI Jul 22, 22:45 UTCJul 22, 23:10 UTC25m
2026-07-22 SKW4062 BOS → BWI Jul 22, 21:05 UTCJul 22, 21:40 UTC35m
2026-07-22 SKW112J YVR → SEA Jul 22, 18:35 UTCJul 22, 19:10 UTC35m
2026-07-22 SKW123J SEA → YVR Jul 22, 16:30 UTCJul 22, 17:00 UTC30m
2026-07-22 SKW3987 YVR → SEA Jul 22, 14:38 UTCJul 22, 15:19 UTC41m
2026-07-22 SKW3987 - Jul 22, 14:50 UTCJul 22, 15:20 UTC30m
2026-07-22 SKW3887 SLC → OAK Jul 22, 04:25 UTCJul 22, 05:00 UTC35m
2026-07-22 SKW3682 HPN → DTW Jul 22, 02:55 UTCJul 22, 03:25 UTC30m
2026-07-21 SKW142Y DTW → ALB Jul 21, 22:51 UTCJul 21, 23:17 UTC26m
2026-07-21 SKW142Y DTW → ALB Jul 21, 22:50 UTCJul 21, 23:30 UTC40m
2026-07-21 SKW3748 SJC → SEA Jul 21, 21:00 UTCJul 21, 21:25 UTC25m
2026-07-21 SKW3818 SEA → PDX Jul 21, 18:35 UTCJul 21, 19:00 UTC25m
2026-07-21 SKW3818 SEA → PDX Jul 21, 18:30 UTCJul 21, 18:59 UTC29m
2026-07-21 SKW3818 SEA → PDX Jul 21, 16:40 UTCJul 21, 17:15 UTC35m
2026-07-21 SKW3987 YVR → SEA Jul 21, 14:40 UTCJul 21, 15:15 UTC35m
2026-07-21 SKW162Z SEA → YVR Jul 21, 05:35 UTCJul 21, 06:10 UTC35m
2026-07-21 SKW3897 SJC → SEA Jul 21, 01:11 UTCJul 21, 02:39 UTC1h 28m
2026-07-21 SKW3897 SJC → SEA Jul 21, 01:10 UTCJul 21, 02:45 UTC1h 35m
2026-07-20 SKW3897 SEA → SJC Jul 20, 22:20 UTCJul 21, 00:15 UTC1h 54m
2026-07-20 SKW4139 RAP → MSP Jul 20, 19:40 UTCJul 20, 20:25 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 N303SY page for operator, model, and routing details .

Mode-S A32C1E frequently asked

What is Mode-S code A32C1E?
A32C1E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N303SY.
Where is Mode-S A32C1E registered?
Mode-S code A32C1E 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 A32C1E 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 A32C1E, octal 50626036, decimal 10,693,662.
What flights does A32C1E operate?
Mode-S A32C1E has broadcast 20 distinct callsigns, including SKW4141, SKW4062, SKW123J, SKW4125, SKW3897.