Apparatus

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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 Jul 26, 22:30 UTC
Flights observed
639
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

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
SKW4099 - 10 2026-07-17
SKW3828 - 10 2026-06-29
SKW3732 SkyWest Airlines 10 2026-05-13
SKW3894 - 9 2026-07-14
SKW3777 - 9 2026-07-09
SKW4077 - 8 2026-07-19
SKW3913 SkyWest Airlines 7 2026-06-06
SKW3902 - 7 2026-07-17
SKW3883 SkyWest Airlines 7 2026-07-17
SKW3881 SkyWest Airlines 7 2026-06-06
SKW3876 SkyWest Airlines 7 2026-05-18
SKW3806 SkyWest Airlines 7 2026-05-03
SKW3755 - 7 2026-07-14
SKW4057 - 6 2026-07-19
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4063 SLC → OAK Jul 26, 21:00 UTCJul 26, 22:30 UTC1h 30m
2026-07-26 SKW3848 SLC → MFR Jul 26, 18:50 UTCJul 26, 19:40 UTC50m
2026-07-26 SKW3658 SJC → SEA Jul 26, 15:45 UTCJul 26, 17:40 UTC1h 55m
2026-07-26 SKW4138 FAT → SLC Jul 26, 13:15 UTCJul 26, 14:25 UTC1h 10m
2026-07-26 SKW3774 SLC → FAT Jul 26, 02:45 UTCJul 26, 03:50 UTC1h 5m
2026-07-25 SKW4009 SEA → SFO Jul 25, 23:38 UTCJul 26, 01:27 UTC1h 49m
2026-07-25 SKW4009 SEA → SFO Jul 25, 23:40 UTCJul 26, 01:40 UTC2h 0m
2026-07-25 SKW3585 JFK → ORD Jul 25, 20:05 UTCJul 25, 22:00 UTC1h 55m
2026-07-25 SKW4026 MSP → ATW Jul 25, 16:50 UTCJul 25, 18:20 UTC1h 30m
2026-07-25 SKW4026 MSP → ATW Jul 25, 14:30 UTCJul 25, 16:00 UTC1h 30m
2026-07-25 SKW4009 SEA → SFO Jul 25, 02:30 UTCJul 25, 04:30 UTC2h 0m
2026-07-24 SKW3585 JFK → ORD Jul 24, 22:30 UTCJul 25, 00:35 UTC2h 5m
2026-07-24 SKW3585 JFK → ORD Jul 24, 22:32 UTCJul 25, 00:29 UTC1h 57m
2026-07-24 SKW3841 SBA → SLC Jul 24, 19:50 UTCJul 24, 21:30 UTC1h 40m
2026-07-24 SKW3841 SLC → SBA Jul 24, 17:10 UTCJul 24, 18:55 UTC1h 45m
2026-07-24 SKW3745 TUS → SLC Jul 24, 14:15 UTCJul 24, 15:45 UTC1h 30m
2026-07-24 SKW4054 SLC → OAK Jul 24, 02:40 UTCJul 24, 04:20 UTC1h 40m
2026-07-23 SKW3896 OMA → SLC Jul 23, 23:05 UTCJul 24, 01:20 UTC2h 15m
2026-07-23 SKW3896 OMA → SLC Jul 23, 19:50 UTCJul 23, 21:45 UTC1h 55m
2026-07-23 SKW4026 MSP → ATW Jul 23, 17:00 UTCJul 23, 18:25 UTC1h 25m
2026-07-23 SKW4451 SEA → SFO Jul 23, 15:00 UTCJul 23, 15:50 UTC50m
2026-07-23 SKW4627 DTW → ATL Jul 23, 00:40 UTCJul 23, 02:35 UTC1h 55m
2026-07-20 SKW4148 - Jul 20, 03:20 UTCJul 20, 04:50 UTC1h 30m
2026-07-20 SKW3799 MDW → MSP Jul 20, 00:10 UTCJul 20, 02:30 UTC2h 20m
2026-07-19 SKW3794 - Jul 19, 20:20 UTCJul 19, 22:30 UTC2h 10m
2026-07-19 SKW4119 - Jul 19, 17:50 UTCJul 19, 18:45 UTC55m
2026-07-19 SKW4119 - Jul 19, 15:35 UTCJul 19, 16:40 UTC1h 5m
2026-07-19 SKW4057 PHX → LAX Jul 19, 13:16 UTCJul 19, 14:04 UTC48m
2026-07-19 SKW4057 PHX → LAX Jul 19, 13:10 UTCJul 19, 14:10 UTC1h 0m
2026-07-19 SKW4077 - Jul 19, 00:50 UTCJul 19, 01:50 UTC1h 0m
2026-07-18 SKW3842 SJC → LAX Jul 18, 22:10 UTCJul 18, 23:10 UTC1h 0m
2026-07-18 SKW3842 - Jul 18, 20:05 UTCJul 18, 20:55 UTC50m
2026-07-18 SKW3716 - Jul 18, 18:15 UTCJul 18, 18:45 UTC30m
2026-07-18 SKW3716 - Jul 18, 15:25 UTCJul 18, 16:00 UTC35m
2026-07-18 SKW4057 - Jul 18, 13:10 UTCJul 18, 14:10 UTC1h 0m
2026-07-18 SKW3827 SHV → ATL Jul 18, 06:05 UTCJul 18, 07:05 UTC1h 0m
2026-07-18 SKW4077 - Jul 18, 03:35 UTCJul 18, 04:30 UTC55m
2026-07-18 SKW4077 - Jul 18, 00:55 UTCJul 18, 01:54 UTC1h 0m
2026-07-17 SKW3902 - Jul 17, 22:29 UTCJul 17, 23:39 UTC1h 10m
2026-07-17 SKW3902 RNO → LAX Jul 17, 22:29 UTCJul 17, 23:35 UTC1h 6m
2026-07-17 SKW3902 - Jul 17, 20:10 UTCJul 17, 21:05 UTC55m
2026-07-17 SKW4099 - Jul 17, 18:05 UTCJul 17, 19:09 UTC1h 5m
2026-07-17 SKW4099 RNO → LAX Jul 17, 17:54 UTCJul 17, 19:02 UTC1h 8m
2026-07-17 SKW4099 - Jul 17, 15:35 UTCJul 17, 16:24 UTC50m
2026-07-17 SKW3743 - Jul 17, 13:50 UTCJul 17, 14:15 UTC25m
2026-07-17 SKW3746 - Jul 17, 07:40 UTCJul 17, 08:15 UTC35m
2026-07-17 SKW3883 MSP → MDW Jul 17, 05:39 UTCJul 17, 06:35 UTC55m
2026-07-17 SKW3883 MSP → MDW Jul 17, 04:10 UTCJul 17, 04:54 UTC45m
2026-07-17 SKW3701 - Jul 17, 02:05 UTCJul 17, 03:20 UTC1h 15m
2026-07-17 SKW3701 - Jul 17, 01:20 UTCJul 17, 01:29 UTC10m

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 Jul 26, 22:30 UTC.
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, SKW4099, SKW3828, SKW3732, SKW3894.