Apparatus

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sensors Mode-S transponder

A33EB1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N308SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A33EB1
Octal
50637261
Decimal
10,698,417
Country
US
Tail
N308SY
Type
E75L
Broadcasting now · callsign SKW192E · 18,575 ft
Flights observed
662
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

A33EB1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A33EB1 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
SKW4077 SkyWest Airlines 23 2026-06-12
SKW3902 SkyWest Airlines 23 2026-06-11
SKW4119 SkyWest Airlines 18 2026-06-11
SKW3822 - 16 2026-06-22
SKW3759 - 15 2026-06-22
SKW3755 SkyWest Airlines 11 2026-06-14
SKW3842 SkyWest Airlines 10 2026-06-05
SKW3746 - 10 2026-06-15
SKW3743 SkyWest Airlines 10 2026-06-15
SKW3951 - 9 2026-06-21
SKW4099 - 8 2026-06-15
SKW3773 - 8 2026-06-22
SKW3767 - 8 2026-07-10
SKW4142 SkyWest Airlines 7 2026-04-26
SKW4179 SkyWest Airlines 6 2026-04-18
SKW4104 - 6 2026-07-02
SKW4091 - 6 2026-06-19
SKW4070 SkyWest Airlines 6 2026-06-23
SKW4028 - 6 2026-07-12
SKW3680 - 6 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW3813 AUS → MSP Jul 14, 15:10 UTCJul 14, 17:35 UTC2h 25m
2026-07-14 SKW4015 IND → AUS Jul 14, 11:40 UTCJul 14, 13:40 UTC2h 0m
2026-07-14 SKW3731 AUS → IND Jul 14, 01:10 UTCJul 14, 03:15 UTC2h 5m
2026-07-13 SKW4016 - Jul 13, 21:40 UTCJul 13, 23:15 UTC1h 35m
2026-07-13 SKW141E AUS → MSY Jul 13, 18:46 UTCJul 13, 20:35 UTC1h 49m
2026-07-13 SKW141E AUS → MSY Jul 13, 19:00 UTCJul 13, 20:35 UTC1h 35m
2026-07-13 SKW3876 DEN → AUS Jul 13, 15:45 UTCJul 13, 17:25 UTC1h 40m
2026-07-13 SKW3876 AUS → DEN Jul 13, 12:40 UTCJul 13, 14:30 UTC1h 50m
2026-07-13 SKW3669 DEN → AUS Jul 13, 01:55 UTCJul 13, 03:45 UTC1h 50m
2026-07-13 SKW3669 DEN → AUS Jul 13, 01:54 UTCJul 13, 03:40 UTC1h 46m
2026-07-12 SKW3669 AUS → DEN Jul 12, 22:10 UTCJul 13, 00:15 UTC2h 5m
2026-07-12 SKW4028 - Jul 12, 18:05 UTCJul 12, 20:40 UTC2h 35m
2026-07-12 SKW4028 AUS → CMH Jul 12, 14:45 UTCJul 12, 17:05 UTC2h 20m
2026-07-12 SKW3612 - Jul 12, 02:15 UTCJul 12, 04:30 UTC2h 15m
2026-07-11 SKW3612 - Jul 11, 23:15 UTCJul 12, 01:20 UTC2h 5m
2026-07-11 SKW4028 - Jul 11, 19:15 UTCJul 11, 21:45 UTC2h 30m
2026-07-11 SKW4028 AUS → CMH Jul 11, 15:55 UTCJul 11, 18:20 UTC2h 25m
2026-07-11 SKW4146 - Jul 11, 12:30 UTCJul 11, 14:25 UTC1h 55m
2026-07-11 SKW4163 AUS → BNA Jul 11, 00:45 UTCJul 11, 02:35 UTC1h 50m
2026-07-10 SKW3767 - Jul 10, 23:20 UTCJul 10, 23:25 UTC5m
2026-07-10 SKW3767 ECP → AUS Jul 10, 21:10 UTCJul 10, 23:25 UTC2h 15m
2026-07-10 SKW3767 ECP → AUS Jul 10, 21:03 UTCJul 10, 23:02 UTC1h 59m
2026-07-10 SKW3767 - Jul 10, 18:10 UTCJul 10, 20:00 UTC1h 50m
2026-07-10 SKW3650 FAR → MSP Jul 10, 15:10 UTCJul 10, 16:40 UTC1h 30m
2026-07-10 SKW3650 FAR → MSP Jul 10, 12:30 UTCJul 10, 14:00 UTC1h 30m
2026-07-09 SKW4027 - Jul 9, 23:05 UTCJul 10, 01:05 UTC2h 0m
2026-07-09 SKW4027 AUS → IND Jul 9, 19:30 UTCJul 9, 21:35 UTC2h 5m
2026-07-09 SKW4101 - Jul 9, 15:50 UTCJul 9, 18:00 UTC2h 10m
2026-07-09 SKW4101 IND → AUS Jul 9, 15:46 UTCJul 9, 17:47 UTC2h 1m
2026-07-09 SKW4101 AUS → IND Jul 9, 12:40 UTCJul 9, 14:50 UTC2h 10m
2026-07-09 SKW3669 DEN → AUS Jul 9, 02:30 UTCJul 9, 04:15 UTC1h 45m
2026-07-08 SKW3669 AUS → DEN Jul 8, 22:50 UTCJul 9, 01:05 UTC2h 15m
2026-07-08 SKW4028 - Jul 8, 17:55 UTCJul 8, 20:15 UTC2h 20m
2026-07-08 SKW4028 AUS → CMH Jul 8, 14:25 UTCJul 8, 17:00 UTC2h 35m
2026-07-08 SKW4088 - Jul 8, 11:55 UTCJul 8, 13:15 UTC1h 20m
2026-07-08 SKW4088 MEM → AUS Jul 8, 11:59 UTCJul 8, 13:13 UTC1h 14m
2026-07-08 SKW3952 - Jul 8, 01:10 UTCJul 8, 02:25 UTC1h 15m
2026-07-07 SKW3767 - Jul 7, 21:15 UTCJul 7, 23:05 UTC1h 50m
2026-07-07 SKW3767 - Jul 7, 18:00 UTCJul 7, 19:45 UTC1h 45m
2026-07-07 SKW3650 FAR → MSP Jul 7, 15:05 UTCJul 7, 16:30 UTC1h 25m
2026-07-07 SKW3650 FAR → MSP Jul 7, 12:15 UTCJul 7, 13:45 UTC1h 30m
2026-07-07 SKW4175 - Jul 7, 10:30 UTCJul 7, 11:20 UTC50m
2026-07-07 SKW4067 - Jul 7, 04:15 UTCJul 7, 05:00 UTC45m
2026-07-07 SKW3772 - Jul 7, 01:00 UTCJul 7, 03:00 UTC2h 0m
2026-07-06 SKW107K - Jul 6, 21:55 UTCJul 7, 00:00 UTC2h 5m
2026-07-06 SKW107K AUS → JAX Jul 6, 21:56 UTCJul 7, 00:00 UTC2h 4m
2026-07-06 SKW4146 BNA → AUS Jul 6, 18:55 UTCJul 6, 20:45 UTC1h 50m
2026-07-06 SKW4608 MSP → BNA Jul 6, 16:03 UTCJul 6, 17:25 UTC1h 22m
2026-07-06 SKW4608 MSP → BNA Jul 6, 15:50 UTCJul 6, 17:30 UTC1h 40m
2026-07-06 SKW3660 YWG → MSP Jul 6, 11:50 UTCJul 6, 12:55 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 N308SY page for operator, model, and routing details .

Mode-S A33EB1 frequently asked

What is Mode-S code A33EB1?
A33EB1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N308SY.
Where is Mode-S A33EB1 registered?
Mode-S code A33EB1 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 A33EB1 broadcasting right now?
Yes. Mode-S A33EB1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A33EB1, octal 50637261, decimal 10,698,417.
What flights does A33EB1 operate?
Mode-S A33EB1 has broadcast 20 distinct callsigns, including SKW4077, SKW3902, SKW4119, SKW3822, SKW3759.