Apparatus

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sensors Mode-S transponder

A2A213

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N269SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A2A213
Octal
50521023
Decimal
10,658,323
Country
US
Tail
N269SY
Type
E75L
No current signal · last broadcast Jul 26, 22:10 UTC
Flights observed
522
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:10 UTC

Last known position

Most recent position reported by Mode-S A2A213.

Country allocation

The ICAO 24-bit address A2A213 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
SKW3935 - 29 2026-06-29
SKW4025 - 15 2026-07-18
SKW3989 - 15 2026-06-30
SKW3771 - 15 2026-07-11
SKW4470 SkyWest Airlines 14 2026-07-18
SKW4473 - 13 2026-07-11
SKW3995 - 13 2026-06-21
SKW4454 SkyWest Airlines 12 2026-05-07
SKW4019 SkyWest Airlines 12 2026-05-16
SKW3903 - 12 2026-07-20
SKW3689 - 12 2026-07-18
SKW172E SkyWest Airlines 12 2026-05-16
SKW3927 - 11 2026-06-20
SKW4457 SkyWest Airlines 10 2026-05-01
SKW4134 SkyWest Airlines 9 2026-07-20
SKW4129 - 9 2026-06-30
SKW3996 - 9 2026-06-30
SKW3925 - 9 2026-07-09
SKW4038 SkyWest Airlines 8 2026-05-01
SKW3690 SkyWest Airlines 8 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3805 MDT → ATL Jul 26, 21:05 UTCJul 26, 22:05 UTC1h 0m
2026-07-26 SKW3805 MDT → ATL Jul 26, 18:35 UTCJul 26, 19:30 UTC55m
2026-07-26 SKW3760 MSN → MSP Jul 26, 16:20 UTCJul 26, 17:20 UTC1h 0m
2026-07-26 SKW3760 MSN → MSP Jul 26, 14:05 UTCJul 26, 15:05 UTC1h 0m
2026-07-26 SKW3504 MSN → MSP Jul 26, 11:20 UTCJul 26, 13:00 UTC1h 40m
2026-07-25 SKW3505 DTW → OMA Jul 25, 20:55 UTCJul 25, 22:15 UTC1h 20m
2026-07-25 SKW4097 CMH → MSP Jul 25, 18:00 UTCJul 25, 19:35 UTC1h 35m
2026-07-25 SKW4097 CMH → MSP Jul 25, 15:20 UTCJul 25, 16:50 UTC1h 30m
2026-07-25 SKW3946 ORD → JFK Jul 25, 11:15 UTCJul 25, 13:50 UTC2h 35m
2026-07-25 SKW4118 OKC → LGA Jul 25, 00:50 UTCJul 25, 03:30 UTC2h 40m
2026-07-24 SKW3805 MDT → ATL Jul 24, 22:30 UTCJul 24, 23:35 UTC1h 5m
2026-07-24 SKW3805 MDT → ATL Jul 24, 18:45 UTCJul 24, 19:45 UTC1h 0m
2026-07-24 SKW4097 CMH → MSP Jul 24, 15:50 UTCJul 24, 17:15 UTC1h 25m
2026-07-24 SKW4097 CMH → MSP Jul 24, 13:15 UTCJul 24, 14:45 UTC1h 30m
2026-07-24 SKW4107 MSP → CMH Jul 24, 10:20 UTCJul 24, 11:45 UTC1h 25m
2026-07-24 SKW4109 MSP → MSN Jul 24, 00:15 UTCJul 24, 01:50 UTC1h 35m
2026-07-23 SKW4442 BOS → JFK Jul 23, 20:30 UTCJul 23, 21:50 UTC1h 20m
2026-07-23 SKW4442 BOS → JFK Jul 23, 20:36 UTCJul 23, 21:46 UTC1h 10m
2026-07-23 SKW4442 BOS → JFK Jul 23, 18:00 UTCJul 23, 19:25 UTC1h 25m
2026-07-23 SKW3924 DTW → MSN Jul 23, 13:55 UTCJul 23, 16:40 UTC2h 45m
2026-07-23 SKW3704 GFK → MSP Jul 23, 00:30 UTCJul 23, 02:05 UTC1h 35m
2026-07-22 SKW3842 MSP → RAP Jul 22, 22:30 UTCJul 22, 23:25 UTC55m
2026-07-22 SKW3842 MSP → RAP Jul 22, 22:08 UTCJul 22, 23:19 UTC1h 11m
2026-07-22 SKW3842 MSP → RAP Jul 22, 20:05 UTCJul 22, 20:55 UTC50m
2026-07-22 SKW3716 ATL → AGS Jul 22, 18:15 UTCJul 22, 18:40 UTC25m
2026-07-22 SKW3716 ATL → AGS Jul 22, 16:15 UTCJul 22, 16:45 UTC30m
2026-07-22 SKW3502 - Jul 22, 13:25 UTCJul 22, 14:35 UTC1h 10m
2026-07-22 SKW3846 LAX → TUS Jul 22, 02:40 UTCJul 22, 03:50 UTC1h 10m
2026-07-21 SKW3778 MOT → MSP Jul 21, 23:45 UTCJul 22, 00:55 UTC1h 10m
2026-07-21 SKW3717 ORD → BOS Jul 21, 21:25 UTCJul 21, 23:00 UTC1h 35m
2026-07-21 SKW3718 BNA → JFK Jul 21, 18:20 UTCJul 21, 19:45 UTC1h 25m
2026-07-21 SKW3718 BNA → JFK Jul 21, 15:40 UTCJul 21, 17:10 UTC1h 30m
2026-07-21 SKW4069 BWI → BOS Jul 21, 12:55 UTCJul 21, 14:30 UTC1h 35m
2026-07-21 SKW4069 BWI → BOS Jul 21, 13:00 UTCJul 21, 14:25 UTC1h 25m
2026-07-21 SKW3803 DTW → MSN Jul 21, 03:20 UTCJul 21, 04:55 UTC1h 35m
2026-07-21 SKW3803 DTW → MSN Jul 21, 03:21 UTCJul 21, 04:48 UTC1h 27m
2026-07-21 SKW148E ATL → HPN Jul 21, 01:00 UTCJul 21, 02:00 UTC1h 0m
2026-07-20 SKW166C SEA → SJC Jul 20, 22:20 UTCJul 20, 22:50 UTC30m
2026-07-20 SKW4134 OAK → SLC Jul 20, 20:00 UTCJul 20, 21:30 UTC1h 30m
2026-07-20 SKW4134 OAK → SLC Jul 20, 17:10 UTCJul 20, 18:40 UTC1h 30m
2026-07-20 SKW4152 MEM → LGA Jul 20, 14:20 UTCJul 20, 15:35 UTC1h 15m
2026-07-20 SKW3729 SLC → ABQ Jul 20, 03:00 UTCJul 20, 04:25 UTC1h 25m
2026-07-20 SKW3903 OAK → SLC Jul 20, 00:10 UTCJul 20, 01:40 UTC1h 30m
2026-07-19 SKW3903 SLC → OAK Jul 19, 21:35 UTCJul 19, 23:10 UTC1h 35m
2026-07-19 SKW3880 SLC → SLC Jul 19, 16:55 UTCJul 19, 20:20 UTC3h 25m
2026-07-19 SKW117W COS → SLC Jul 19, 14:28 UTCJul 19, 15:35 UTC1h 7m
2026-07-19 SKW117W COS → SLC Jul 19, 14:25 UTCJul 19, 15:40 UTC1h 15m
2026-07-19 SKW3788 SLC → COS Jul 19, 03:05 UTCJul 19, 04:20 UTC1h 15m
2026-07-19 SKW3788 SLC → COS Jul 19, 03:13 UTCJul 19, 04:15 UTC1h 2m
2026-07-19 SKW160Y - Jul 19, 01:20 UTCJul 19, 02:00 UTC40m

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 N269SY page for operator, model, and routing details .

Mode-S A2A213 frequently asked

What is Mode-S code A2A213?
A2A213 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N269SY.
Where is Mode-S A2A213 registered?
Mode-S code A2A213 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 A2A213 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2A213, octal 50521023, decimal 10,658,323.
What flights does A2A213 operate?
Mode-S A2A213 has broadcast 20 distinct callsigns, including SKW3935, SKW4025, SKW3989, SKW3771, SKW4470.