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 1h ago
Flights observed
323
Distinct callsigns
20
Country
US
Last broadcast
1h ago

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
SKW4125 SkyWest Airlines 9 2026-05-09
SKW3857 SkyWest Airlines 9 2026-05-10
SKW3869 SkyWest Airlines 8 2026-04-21
SKW4128 SkyWest Airlines 6 2026-05-20
SKW3955 SkyWest Airlines 6 2026-05-21
SKW3953 SkyWest Airlines 6 2026-05-02
SKW3890 SkyWest Airlines 6 2026-05-28
SKW3855 SkyWest Airlines 6 2026-05-20
SKW3843 SkyWest Airlines 6 2026-04-21
SKW3824 SkyWest Airlines 6 2026-05-18
SKW3744 SkyWest Airlines 6 2026-04-15
SKW127T SkyWest Airlines 6 2026-05-21
SKW4097 SkyWest Airlines 5 2026-04-18
SKW3832 SkyWest Airlines 5 2026-05-22
SKW3820 SkyWest Airlines 5 2026-04-22
SKW3785 SkyWest Airlines 5 2026-05-26
SKW3770 SkyWest Airlines 5 2026-05-20
SKW3736 SkyWest Airlines 5 2026-05-20
SKW123J SkyWest Airlines 5 2026-05-21
SKW4145 SkyWest Airlines 4 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 SKW3839 SLC → HLN May 30, 03:25 UTCMay 30, 03:30 UTC5m
2026-05-30 SKW3693 HPN → ATL May 30, 00:00 UTCMay 30, 01:25 UTC1h 25m
2026-05-29 SKW3693 HPN → ATL May 29, 21:10 UTCMay 29, 22:55 UTC1h 45m
2026-05-29 SKW3718 BNA → JFK May 29, 18:15 UTCMay 29, 19:35 UTC1h 20m
2026-05-29 SKW3718 BNA → JFK May 29, 18:12 UTCMay 29, 19:34 UTC1h 22m
2026-05-29 SKW3718 BNA → JFK May 29, 15:35 UTCMay 29, 17:20 UTC1h 45m
2026-05-29 SKW4138 FAT → SLC May 29, 13:20 UTCMay 29, 14:30 UTC1h 10m
2026-05-29 SKW3774 SLC → FAT May 29, 02:45 UTCMay 29, 03:55 UTC1h 10m
2026-05-28 SKW3676 PDX → SEA May 28, 22:50 UTCMay 29, 01:50 UTC3h 0m
2026-05-28 SKW3737 DTW → MDW May 28, 20:25 UTCMay 28, 21:55 UTC1h 30m
2026-05-28 SKW3737 DTW → MDW May 28, 20:32 UTCMay 28, 21:54 UTC1h 22m
2026-05-28 SKW3735 SJC → LAX May 28, 18:35 UTCMay 28, 19:20 UTC45m
2026-05-28 SKW3695 ORD → BOS May 28, 14:35 UTCMay 28, 16:50 UTC2h 15m
2026-05-28 SKW3932 MSP → MOT May 28, 03:20 UTCMay 28, 05:30 UTC2h 10m
2026-05-28 SKW3890 GRR → MSP May 28, 00:45 UTCMay 28, 01:15 UTC30m
2026-05-27 SKW3728 MSP → SDF May 27, 22:16 UTCMay 27, 23:19 UTC1h 3m
2026-05-27 SKW3933 JFK → MSP May 27, 19:40 UTCMay 27, 21:00 UTC1h 20m
2026-05-27 SKW3933 JFK → MSP May 27, 19:42 UTCMay 27, 20:51 UTC1h 9m
2026-05-27 SKW3933 JFK → MSP May 27, 17:00 UTCMay 27, 18:45 UTC1h 45m
2026-05-27 SKW4069 BWI → BOS May 27, 12:50 UTCMay 27, 14:15 UTC1h 25m
2026-05-27 SKW3803 DTW → MSN May 27, 03:09 UTCMay 27, 04:45 UTC1h 35m
2026-05-27 SKW3782 SMF → LAX May 27, 00:10 UTCMay 27, 01:24 UTC1h 15m
2026-05-26 SKW3891 LAX → OAK May 26, 22:25 UTCMay 26, 22:59 UTC35m
2026-05-26 SKW3785 MSP → FSD May 26, 20:34 UTCMay 26, 20:54 UTC20m
2026-05-26 SKW3785 MSP → FSD May 26, 20:09 UTCMay 26, 20:54 UTC45m
2026-05-26 SKW3785 MSP → FSD May 26, 19:37 UTCMay 26, 20:18 UTC41m
2026-05-26 SKW155A BWI → BOS May 26, 17:04 UTCMay 26, 18:40 UTC1h 35m
2026-05-26 SKW3693 HPN → ATL May 26, 00:04 UTCMay 26, 01:30 UTC1h 25m
2026-05-25 SKW3693 HPN → ATL May 25, 21:15 UTCMay 25, 22:55 UTC1h 40m
2026-05-25 SKW4449 SLC → COS May 25, 18:12 UTCMay 25, 19:20 UTC1h 8m
2026-05-25 SKW4449 SLC → COS May 25, 18:10 UTCMay 25, 19:25 UTC1h 14m
2026-05-25 SKW4449 SLC → COS May 25, 15:50 UTCMay 25, 17:05 UTC1h 15m
2026-05-25 SKW4061 SJC → LAX May 25, 13:05 UTCMay 25, 14:30 UTC1h 25m
2026-05-25 SKW4061 SJC → LAX May 25, 13:04 UTCMay 25, 14:30 UTC1h 26m
2026-05-25 SKW3797 SLC → OAK May 25, 03:50 UTCMay 25, 05:15 UTC1h 25m
2026-05-25 SKW4052 HPN → ATL May 25, 02:10 UTCMay 25, 02:30 UTC20m
2026-05-24 SKW4052 HPN → ATL May 24, 20:00 UTCMay 24, 21:45 UTC1h 45m
2026-05-22 SKW3737 DTW → MDW May 22, 20:30 UTCMay 22, 21:50 UTC1h 20m
2026-05-22 SKW3735 SJC → LAX May 22, 18:20 UTCMay 22, 19:05 UTC45m
2026-05-22 SKW3749 ALB → DTW May 22, 15:40 UTCMay 22, 16:30 UTC50m
2026-05-22 SKW3873 MKE → BOS May 22, 04:55 UTCMay 22, 05:30 UTC35m
2026-05-22 SKW3832 GEG → SEA May 22, 02:40 UTCMay 22, 03:45 UTC1h 5m
2026-05-22 SKW3832 GEG → SEA May 22, 00:45 UTCMay 22, 01:25 UTC40m
2026-05-21 SKW3955 ATL → MGM May 21, 22:55 UTCMay 21, 23:30 UTC35m
2026-05-21 SKW3955 ATL → MGM May 21, 20:55 UTCMay 21, 21:25 UTC30m
2026-05-21 SKW112J YVR → SEA May 21, 18:35 UTCMay 21, 19:10 UTC35m
2026-05-21 SKW123J SEA → YVR May 21, 16:50 UTCMay 21, 17:20 UTC30m
2026-05-21 SKW3965 ATL → ABY May 21, 14:25 UTCMay 21, 14:55 UTC30m
2026-05-21 SKW3997 ATL → HPN May 21, 03:25 UTCMay 21, 03:55 UTC30m
2026-05-21 SKW127T MFR → SEA May 21, 00:35 UTCMay 21, 01:40 UTC1h 5m

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 1h ago.
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 SKW4125, SKW3857, SKW3869, SKW4128, SKW3955.