Apparatus

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sensors Mode-S transponder

A37765

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N322SY · operated by SKYWEST AIRLINES INC

Hex
A37765
Octal
50673545
Decimal
10,712,933
Country
US
Tail
N322SY
Type
E75L
No current signal · last broadcast Jul 26, 20:50 UTC
Flights observed
674
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:50 UTC

Last known position

Most recent position reported by Mode-S A37765.

Country allocation

The ICAO 24-bit address A37765 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
SKW4101 SkyWest Airlines 12 2026-07-23
SKW3699 - 12 2026-06-25
SKW3813 - 10 2026-07-10
SKW3526 - 10 2026-07-10
SKW4063 - 9 2026-07-17
SKW3863 SkyWest Airlines 9 2026-04-30
SKW3501 SkyWest Airlines 9 2026-06-02
SKW197F - 9 2026-06-24
SKW4005 - 8 2026-06-24
SKW3848 - 8 2026-07-16
SKW3660 SkyWest Airlines 8 2026-06-04
SKW4035 SkyWest Airlines 7 2026-06-03
SKW3989 SkyWest Airlines 7 2026-06-04
SKW3981 SkyWest Airlines 7 2026-04-29
SKW3926 SkyWest Airlines 7 2026-05-27
SKW3823 - 7 2026-06-23
SKW3707 - 7 2026-06-30
SKW3577 SkyWest Airlines 7 2026-07-23
SKW182J - 7 2026-06-24
SKW4447 SkyWest Airlines 6 2026-05-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3878 CLE → LGA Jul 26, 19:30 UTCJul 26, 20:25 UTC55m
2026-07-26 SKW3806 LAX → OAK Jul 26, 17:05 UTCJul 26, 18:30 UTC1h 25m
2026-07-26 SKW4006 TUL → SLC Jul 26, 13:10 UTCJul 26, 15:20 UTC2h 10m
2026-07-25 SKW3825 MSP → MOT Jul 25, 23:25 UTCJul 26, 01:25 UTC2h 0m
2026-07-25 SKW3765 LAX → SJC Jul 25, 21:45 UTCJul 25, 22:25 UTC40m
2026-07-25 SKW3765 LAX → SJC Jul 25, 19:45 UTCJul 25, 20:10 UTC25m
2026-07-25 SKW3681 JFK → BNA Jul 25, 17:00 UTCJul 25, 18:25 UTC1h 25m
2026-07-25 SKW3681 JFK → BNA Jul 25, 16:55 UTCJul 25, 18:19 UTC1h 24m
2026-07-25 SKW3681 JFK → BNA Jul 25, 14:05 UTCJul 25, 15:40 UTC1h 35m
2026-07-25 SKW3681 JFK → BNA Jul 25, 14:03 UTCJul 25, 15:30 UTC1h 27m
2026-07-25 SKW3856 SJC → SEA Jul 25, 02:25 UTCJul 25, 03:55 UTC1h 30m
2026-07-24 SKW3856 SJC → SEA Jul 24, 23:40 UTCJul 25, 01:05 UTC1h 25m
2026-07-24 SKW3908 ATL → CRW Jul 24, 19:55 UTCJul 24, 22:20 UTC2h 25m
2026-07-24 SKW3876 SEA → SFO Jul 24, 15:45 UTCJul 24, 17:35 UTC1h 50m
2026-07-24 SKW3876 SEA → SFO Jul 24, 12:55 UTCJul 24, 14:40 UTC1h 45m
2026-07-23 SKW4027 BOS → CLE Jul 23, 22:40 UTCJul 24, 00:45 UTC2h 5m
2026-07-23 SKW4027 BOS → CLE Jul 23, 19:15 UTCJul 23, 21:35 UTC2h 20m
2026-07-23 SKW4101 SJC → SLC Jul 23, 15:40 UTCJul 23, 17:45 UTC2h 5m
2026-07-23 SKW4101 SJC → SLC Jul 23, 12:35 UTCJul 23, 14:50 UTC2h 15m
2026-07-23 SKW3577 GSP → DTW Jul 23, 01:10 UTCJul 23, 02:35 UTC1h 25m
2026-07-22 SKW3577 GSP → DTW Jul 22, 22:45 UTCJul 23, 00:10 UTC1h 25m
2026-07-22 SKW3772 SFO → SEA Jul 22, 18:45 UTCJul 22, 20:45 UTC2h 0m
2026-07-22 SKW107K AUS → JAX Jul 22, 15:35 UTCJul 22, 17:50 UTC2h 15m
2026-07-22 SKW4146 MSN → MSP Jul 22, 12:15 UTCJul 22, 14:05 UTC1h 50m
2026-07-22 SKW4163 AUS → BNA Jul 22, 04:30 UTCJul 22, 05:25 UTC55m
2026-07-22 SKW4163 AUS → BNA Jul 22, 00:20 UTCJul 22, 02:35 UTC2h 15m
2026-07-21 SKW4121 MDW → DTW Jul 21, 17:50 UTCJul 21, 18:40 UTC50m
2026-07-21 SKW125X - Jul 21, 16:05 UTCJul 21, 16:50 UTC45m
2026-07-20 SKW3734 TPA → AUS Jul 20, 00:15 UTCJul 20, 02:25 UTC2h 10m
2026-07-19 SKW3734 TPA → AUS Jul 19, 23:59 UTCJul 20, 02:20 UTC2h 21m
2026-07-19 SKW3734 AUS → TPA Jul 19, 20:15 UTCJul 19, 22:35 UTC2h 20m
2026-07-19 SKW3747 PHX → AUS Jul 19, 17:00 UTCJul 19, 18:55 UTC1h 55m
2026-07-19 SKW3747 AUS → PHX Jul 19, 13:40 UTCJul 19, 15:40 UTC2h 0m
2026-07-19 SKW3669 DEN → AUS Jul 19, 01:55 UTCJul 19, 03:45 UTC1h 50m
2026-07-18 SKW3669 AUS → DEN Jul 18, 22:25 UTCJul 19, 00:15 UTC1h 50m
2026-07-18 SKW4028 - Jul 18, 18:35 UTCJul 18, 20:55 UTC2h 20m
2026-07-18 SKW4028 AUS → CMH Jul 18, 14:55 UTCJul 18, 17:20 UTC2h 25m
2026-07-18 SKW4015 - Jul 18, 11:35 UTCJul 18, 13:45 UTC2h 10m
2026-07-18 SKW3731 AUS → IND Jul 18, 00:29 UTCJul 18, 02:40 UTC2h 10m
2026-07-17 SKW4053 - Jul 17, 22:10 UTCJul 17, 22:55 UTC45m
2026-07-17 SKW4053 - Jul 17, 20:29 UTCJul 17, 21:15 UTC45m
2026-07-17 SKW4121 MDW → DTW Jul 17, 17:55 UTCJul 17, 18:50 UTC55m
2026-07-17 SKW4177 - Jul 17, 15:49 UTCJul 17, 16:34 UTC45m
2026-07-17 SKW3950 MSP → AUS Jul 17, 12:35 UTCJul 17, 14:50 UTC2h 15m
2026-07-17 SKW4063 - Jul 17, 00:04 UTCJul 17, 01:45 UTC1h 40m
2026-07-16 SKW4063 - Jul 16, 21:10 UTCJul 16, 23:10 UTC2h 0m
2026-07-16 SKW3848 - Jul 16, 19:05 UTCJul 16, 19:55 UTC50m
2026-07-16 SKW4114 - Jul 16, 16:19 UTCJul 16, 18:10 UTC1h 50m
2026-07-16 SKW3796 - Jul 16, 13:00 UTCJul 16, 15:19 UTC2h 20m
2026-07-15 SKW3620 SLC → XNA Jul 15, 23:30 UTCJul 16, 01:50 UTC2h 20m

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 N322SY page for operator, model, and routing details .

Mode-S A37765 frequently asked

What is Mode-S code A37765?
A37765 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N322SY.
Where is Mode-S A37765 registered?
Mode-S code A37765 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 A37765 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A37765, octal 50673545, decimal 10,712,933.
What flights does A37765 operate?
Mode-S A37765 has broadcast 20 distinct callsigns, including SKW4101, SKW3699, SKW3813, SKW3526, SKW4063.