Apparatus

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sensors Mode-S transponder

A3338C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N305SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A3338C
Octal
50631614
Decimal
10,695,564
Country
US
Tail
N305SY
Type
E75L
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
695
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A3338C.

Country allocation

The ICAO 24-bit address A3338C 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
SKW3992 - 12 2026-07-14
SKW3903 - 10 2026-06-28
SKW3841 - 9 2026-07-18
SKW4026 - 8 2026-07-03
SKW3989 - 8 2026-06-13
SKW4444 - 7 2026-07-16
SKW4041 - 7 2026-07-14
SKW3956 - 7 2026-07-14
SKW3899 - 7 2026-06-21
SKW3798 - 7 2026-07-18
SKW3750 SkyWest Airlines 7 2026-05-19
SKW3699 - 7 2026-06-18
SKW4174 - 6 2026-06-23
SKW4119 - 6 2026-07-20
SKW4038 SkyWest Airlines 6 2026-07-26
SKW4035 - 6 2026-06-21
SKW3851 - 6 2026-06-21
SKW3820 - 6 2026-06-29
SKW3815 - 6 2026-06-27
SKW3769 - 6 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW108R SLC → LGB Jul 26, 21:15 UTCJul 26, 23:00 UTC1h 45m
2026-07-26 SKW4038 SEA → SJC Jul 26, 18:10 UTCJul 26, 19:20 UTC1h 10m
2026-07-26 SKW4038 SEA → SJC Jul 26, 18:14 UTCJul 26, 19:08 UTC54m
2026-07-26 SKW102P SGU → SLC Jul 26, 16:15 UTCJul 26, 17:10 UTC55m
2026-07-26 SKW3796 SFO → SEA Jul 26, 13:00 UTCJul 26, 15:20 UTC2h 20m
2026-07-25 SKW3620 SLC → XNA Jul 25, 23:40 UTCJul 26, 01:55 UTC2h 15m
2026-07-25 SKW3804 ROC → DTW Jul 25, 21:10 UTCJul 25, 22:20 UTC1h 10m
2026-07-25 SKW3804 ROC → DTW Jul 25, 20:55 UTCJul 25, 22:15 UTC1h 20m
2026-07-25 SKW3804 ROC → DTW Jul 25, 18:20 UTCJul 25, 19:20 UTC1h 0m
2026-07-25 SKW4152 MEM → LGA Jul 25, 15:55 UTCJul 25, 17:15 UTC1h 20m
2026-07-25 SKW430X SFO → SBP Jul 25, 14:45 UTCJul 25, 15:00 UTC15m
2026-07-24 SKW4091 ABQ → LAX Jul 24, 22:10 UTCJul 25, 00:50 UTC2h 40m
2026-07-24 SKW3951 LAX → PHX Jul 24, 19:35 UTCJul 24, 20:40 UTC1h 5m
2026-07-24 SKW3951 LAX → PHX Jul 24, 17:20 UTCJul 24, 18:25 UTC1h 5m
2026-07-24 SKW4106 RNO → LAX Jul 24, 14:40 UTCJul 24, 15:45 UTC1h 5m
2026-07-24 SKW3929 SJC → SLC Jul 24, 05:10 UTCJul 24, 06:05 UTC55m
2026-07-24 SKW3712 LAX → SMF Jul 24, 02:20 UTCJul 24, 03:30 UTC1h 10m
2026-07-23 SKW3712 LAX → SMF Jul 23, 23:45 UTCJul 24, 00:50 UTC1h 5m
2026-07-23 SKW3744 LAX → OAK Jul 23, 19:45 UTCJul 23, 20:50 UTC1h 5m
2026-07-23 SKW3680 IAD → MSP Jul 23, 15:55 UTCJul 23, 18:35 UTC2h 40m
2026-07-23 SKW3781 MFR → SEA Jul 23, 13:20 UTCJul 23, 14:20 UTC1h 0m
2026-07-23 SKW3954 SEA → MFR Jul 23, 05:15 UTCJul 23, 06:25 UTC1h 10m
2026-07-23 SKW3999 MSN → DTW Jul 23, 00:50 UTCJul 23, 03:05 UTC2h 15m
2026-07-22 SKW3999 MSN → DTW Jul 22, 21:30 UTCJul 22, 23:50 UTC2h 20m
2026-07-22 SKW183T BOI → SEA Jul 22, 18:40 UTCJul 22, 19:45 UTC1h 5m
2026-07-22 SKW3678 BOS → CLE Jul 22, 16:15 UTCJul 22, 17:20 UTC1h 5m
2026-07-22 SKW4471 PDX → SEA Jul 22, 14:30 UTCJul 22, 14:55 UTC25m
2026-07-22 SKW3913 MQT → DTW Jul 22, 04:10 UTCJul 22, 04:45 UTC35m
2026-07-22 SKW3688 DTW → CMH Jul 22, 01:35 UTCJul 22, 02:35 UTC1h 0m
2026-07-21 SKW3688 DTW → CMH Jul 21, 23:30 UTCJul 22, 00:35 UTC1h 5m
2026-07-21 SKW3679 - Jul 21, 19:05 UTCJul 21, 21:45 UTC2h 40m
2026-07-21 SKW138Y LAX → TUS Jul 21, 16:35 UTCJul 21, 17:50 UTC1h 15m
2026-07-21 SKW4106 RNO → LAX Jul 21, 14:10 UTCJul 21, 15:15 UTC1h 5m
2026-07-21 SKW4106 RNO → LAX Jul 21, 14:16 UTCJul 21, 15:09 UTC53m
2026-07-21 SKW3929 SJC → SLC Jul 21, 05:00 UTCJul 21, 06:00 UTC1h 0m
2026-07-21 SKW4087 SAN → LAX Jul 21, 03:10 UTCJul 21, 03:35 UTC25m
2026-07-21 SKW4087 SAN → LAX Jul 21, 01:45 UTCJul 21, 02:15 UTC30m
2026-07-20 SKW3894 - Jul 20, 23:25 UTCJul 21, 00:20 UTC54m
2026-07-20 SKW3894 - Jul 20, 21:00 UTCJul 20, 22:05 UTC1h 5m
2026-07-20 SKW4119 PHX → LAX Jul 20, 17:45 UTCJul 20, 18:45 UTC1h 0m
2026-07-20 SKW4119 PHX → LAX Jul 20, 17:48 UTCJul 20, 18:40 UTC52m
2026-07-20 SKW4119 - Jul 20, 15:30 UTCJul 20, 16:35 UTC1h 5m
2026-07-20 SKW4057 EWR → BOS Jul 20, 13:05 UTCJul 20, 14:10 UTC1h 5m
2026-07-20 SKW3827 SHV → ATL Jul 20, 05:45 UTCJul 20, 06:50 UTC1h 5m
2026-07-20 SKW4077 LAX → PHX Jul 20, 03:25 UTCJul 20, 04:25 UTC1h 0m
2026-07-20 SKW4077 LAX → PHX Jul 20, 01:05 UTCJul 20, 02:15 UTC1h 10m
2026-07-19 SKW3902 - Jul 19, 22:55 UTCJul 20, 00:10 UTC1h 15m
2026-07-19 SKW3902 - Jul 19, 20:05 UTCJul 19, 21:00 UTC55m
2026-07-19 SKW4099 - Jul 19, 17:40 UTCJul 19, 18:50 UTC1h 10m
2026-07-19 SKW4099 - Jul 19, 15:25 UTCJul 19, 16:15 UTC50m

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 N305SY page for operator, model, and routing details .

Mode-S A3338C frequently asked

What is Mode-S code A3338C?
A3338C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N305SY.
Where is Mode-S A3338C registered?
Mode-S code A3338C 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 A3338C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3338C, octal 50631614, decimal 10,695,564.
What flights does A3338C operate?
Mode-S A3338C has broadcast 20 distinct callsigns, including SKW3992, SKW3903, SKW3841, SKW4026, SKW3989.