Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A31122

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N297SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A31122
Octal
50610442
Decimal
10,686,754
Country
US
Tail
N297SY
Type
E75L
No current signal · last broadcast 2h ago
Flights observed
573
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A31122.

Country allocation

The ICAO 24-bit address A31122 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
SKW4134 SkyWest Airlines 11 2026-06-09
SKW3828 - 10 2026-06-29
SKW3732 SkyWest Airlines 10 2026-05-13
SKW3777 - 9 2026-07-09
SKW4099 - 7 2026-06-30
SKW3913 SkyWest Airlines 7 2026-06-06
SKW3894 - 7 2026-07-12
SKW3881 SkyWest Airlines 7 2026-06-06
SKW3876 SkyWest Airlines 7 2026-05-18
SKW3806 SkyWest Airlines 7 2026-05-03
SKW3955 SkyWest Airlines 6 2026-06-12
SKW3953 SkyWest Airlines 6 2026-05-27
SKW3908 SkyWest Airlines 6 2026-06-08
SKW3874 SkyWest Airlines 6 2026-06-10
SKW164T - 6 2026-07-11
SKW4164 SkyWest Airlines 5 2026-05-17
SKW4088 SkyWest Airlines 5 2026-05-17
SKW4077 - 5 2026-06-30
SKW4067 SkyWest Airlines 5 2026-06-13
SKW4038 SkyWest Airlines 5 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SKW3891 - Jul 13, 22:45 UTCJul 13, 23:20 UTC35m
2026-07-13 SKW3891 - Jul 13, 20:50 UTCJul 13, 21:25 UTC35m
2026-07-13 SKW3824 GEG → SEA Jul 13, 18:40 UTCJul 13, 19:30 UTC50m
2026-07-13 SKW3824 SEA → GEG Jul 13, 16:55 UTCJul 13, 17:35 UTC40m
2026-07-13 SKW3790 GEG → SEA Jul 13, 14:10 UTCJul 13, 15:00 UTC50m
2026-07-13 SKW3677 SEA → GEG Jul 13, 03:40 UTCJul 13, 04:15 UTC35m
2026-07-13 SKW4165 GEG → SEA Jul 13, 01:20 UTCJul 13, 02:20 UTC1h 0m
2026-07-12 SKW4145 - Jul 12, 23:50 UTCJul 13, 00:30 UTC40m
2026-07-12 SKW3958 - Jul 12, 21:55 UTCJul 12, 22:55 UTC1h 0m
2026-07-12 SKW3773 - Jul 12, 18:50 UTCJul 12, 20:15 UTC1h 25m
2026-07-12 SKW3773 LAX → BOI Jul 12, 18:56 UTCJul 12, 20:14 UTC1h 18m
2026-07-12 SKW3700 - Jul 12, 16:35 UTCJul 12, 17:45 UTC1h 10m
2026-07-12 SKW3700 - Jul 12, 14:25 UTCJul 12, 15:25 UTC1h 0m
2026-07-12 SKW3759 SMF → LAX Jul 12, 03:55 UTCJul 12, 05:05 UTC1h 10m
2026-07-12 SKW3759 - Jul 12, 02:05 UTCJul 12, 03:05 UTC1h 0m
2026-07-12 SKW3894 - Jul 12, 00:10 UTCJul 12, 01:05 UTC55m
2026-07-11 SKW3894 - Jul 11, 21:50 UTCJul 11, 22:55 UTC1h 5m
2026-07-11 SKW3755 - Jul 11, 19:20 UTCJul 11, 20:25 UTC1h 5m
2026-07-11 SKW164T SEA → SMF Jul 11, 16:15 UTCJul 11, 17:45 UTC1h 30m
2026-07-11 SKW4128 - Jul 11, 13:30 UTCJul 11, 14:15 UTC45m
2026-07-11 SKW4128 EUG → SEA Jul 11, 13:32 UTCJul 11, 14:15 UTC43m
2026-07-11 SKW3855 - Jul 11, 05:50 UTCJul 11, 06:35 UTC45m
2026-07-11 SKW3855 SEA → EUG Jul 11, 05:48 UTCJul 11, 06:34 UTC46m
2026-07-11 SKW3832 GEG → SEA Jul 11, 03:11 UTCJul 11, 03:46 UTC35m
2026-07-11 SKW3832 GEG → SEA Jul 11, 03:05 UTCJul 11, 04:01 UTC55m
2026-07-11 SKW3832 - Jul 11, 01:20 UTCJul 11, 01:55 UTC35m
2026-07-10 SKW3679 - Jul 10, 19:05 UTCJul 10, 21:55 UTC2h 50m
2026-07-10 SKW3679 TUS → SEA Jul 10, 19:11 UTCJul 10, 21:50 UTC2h 39m
2026-07-10 SKW138Y LAX → TUS Jul 10, 16:40 UTCJul 10, 17:50 UTC1h 10m
2026-07-10 SKW4106 - Jul 10, 14:20 UTCJul 10, 15:20 UTC1h 0m
2026-07-10 SKW4106 RNO → LAX Jul 10, 14:16 UTCJul 10, 15:19 UTC1h 3m
2026-07-10 SKW3929 - Jul 10, 05:20 UTCJul 10, 06:20 UTC1h 0m
2026-07-10 SKW3712 SMF → LAX Jul 10, 02:15 UTCJul 10, 03:25 UTC1h 10m
2026-07-09 SKW3712 - Jul 9, 23:55 UTCJul 10, 01:00 UTC1h 5m
2026-07-09 SKW3812 SMF → LAX Jul 9, 21:35 UTCJul 9, 22:40 UTC1h 5m
2026-07-09 SKW3812 SMF → LAX Jul 9, 21:33 UTCJul 9, 22:34 UTC1h 1m
2026-07-09 SKW134F - Jul 9, 19:35 UTCJul 9, 20:40 UTC1h 5m
2026-07-09 SKW4451 SJC → LAX Jul 9, 17:10 UTCJul 9, 18:05 UTC55m
2026-07-09 SKW4026 SLC → SJC Jul 9, 14:15 UTCJul 9, 15:55 UTC1h 40m
2026-07-09 SKW101A - Jul 9, 12:05 UTCJul 9, 12:45 UTC40m
2026-07-09 SKW4279 - Jul 9, 02:55 UTCJul 9, 03:30 UTC35m
2026-07-09 SKW3777 - Jul 9, 00:45 UTCJul 9, 01:55 UTC1h 10m
2026-07-09 SKW3777 FAT → SLC Jul 9, 00:28 UTCJul 9, 01:45 UTC1h 17m
2026-07-08 SKW3777 - Jul 8, 22:15 UTCJul 8, 23:30 UTC1h 15m
2026-07-08 SKW3833 ICT → MSP Jul 8, 19:35 UTCJul 8, 20:45 UTC1h 10m
2026-07-08 SKW3833 ICT → MSP Jul 8, 17:05 UTCJul 8, 18:05 UTC1h 0m
2026-07-08 SKW4443 - Jul 8, 06:40 UTCJul 8, 08:00 UTC1h 20m
2026-07-08 SKW4443 ONT → SLC Jul 8, 06:35 UTCJul 8, 07:55 UTC1h 20m
2026-07-08 SKW3884 SEA → SMF Jul 8, 03:40 UTCJul 8, 05:55 UTC2h 15m
2026-07-07 SKW142Y YVR → SEA Jul 7, 22:51 UTCJul 7, 23:25 UTC34m

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 N297SY page for operator, model, and routing details .

Mode-S A31122 frequently asked

What is Mode-S code A31122?
A31122 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N297SY.
Where is Mode-S A31122 registered?
Mode-S code A31122 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 A31122 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A31122, octal 50610442, decimal 10,686,754.
What flights does A31122 operate?
Mode-S A31122 has broadcast 20 distinct callsigns, including SKW4134, SKW3828, SKW3732, SKW3777, SKW4099.