Apparatus

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sensors Mode-S transponder

A28F80

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N264SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A28F80
Octal
50507600
Decimal
10,653,568
Country
US
Tail
N264SY
Type
E75L
Transponder active on ground
Flights observed
622
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A28F80.

Country allocation

The ICAO 24-bit address A28F80 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
SKW4097 - 20 2026-07-08
SKW4111 SkyWest Airlines 18 2026-07-26
SKW4082 SkyWest Airlines 17 2026-07-26
SKW3758 - 17 2026-07-09
SKW4033 - 16 2026-07-06
SKW3805 - 16 2026-07-10
SKW3507 SkyWest Airlines 16 2026-07-24
SKW4095 SkyWest Airlines 14 2026-07-24
SKW3747 SkyWest Airlines 14 2026-06-04
SKW3753 SkyWest Airlines 13 2026-06-04
SKW3939 - 12 2026-07-09
SKW3842 - 10 2026-07-20
SKW3771 - 10 2026-07-15
SKW3734 SkyWest Airlines 10 2026-06-04
SKW3697 SkyWest Airlines 10 2026-05-29
SKW4473 - 9 2026-07-15
SKW4133 - 9 2026-07-11
SKW4011 - 9 2026-07-11
SKW3890 SkyWest Airlines 9 2026-05-06
SKW3723 SkyWest Airlines 9 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4111 FWA → ATL Jul 26, 19:55 UTCJul 26, 21:15 UTC1h 20m
2026-07-26 SKW4082 SEA → SFO Jul 26, 17:00 UTCJul 26, 18:25 UTC1h 25m
2026-07-26 SKW4082 SEA → SFO Jul 26, 14:20 UTCJul 26, 15:50 UTC1h 30m
2026-07-26 SKW4107 MSP → CMH Jul 26, 11:10 UTCJul 26, 12:35 UTC1h 25m
2026-07-26 SKW4109 MSP → MSN Jul 26, 00:45 UTCJul 26, 02:05 UTC1h 20m
2026-07-25 SKW3723 BNA → BOS Jul 25, 18:35 UTCJul 25, 20:10 UTC1h 35m
2026-07-25 SKW3723 BNA → BOS Jul 25, 18:26 UTCJul 25, 20:00 UTC1h 34m
2026-07-25 SKW3730 MSP → MSN Jul 25, 15:15 UTCJul 25, 16:45 UTC1h 30m
2026-07-25 SKW3905 MSP → MEM Jul 25, 11:15 UTCJul 25, 12:50 UTC1h 35m
2026-07-25 SKW4441 DTW → MCI Jul 25, 03:55 UTCJul 25, 05:20 UTC1h 25m
2026-07-25 SKW4111 FWA → ATL Jul 25, 00:20 UTCJul 25, 01:35 UTC1h 15m
2026-07-24 SKW4111 FWA → ATL Jul 24, 21:30 UTCJul 24, 23:00 UTC1h 30m
2026-07-24 SKW3507 BOS → MKE Jul 24, 18:20 UTCJul 24, 20:00 UTC1h 40m
2026-07-24 SKW3507 BOS → MKE Jul 24, 15:40 UTCJul 24, 17:05 UTC1h 25m
2026-07-24 SKW4117 HPN → ATL Jul 24, 12:55 UTCJul 24, 14:35 UTC1h 40m
2026-07-24 SKW4095 ATL → FWA Jul 24, 04:45 UTCJul 24, 05:10 UTC25m
2026-07-24 SKW4095 ATL → FWA Jul 24, 01:45 UTCJul 24, 03:05 UTC1h 20m
2026-07-24 SKW3579 MSP → MSN Jul 24, 00:00 UTCJul 24, 00:30 UTC30m
2026-07-23 SKW3579 MSP → MSN Jul 23, 22:20 UTCJul 23, 22:45 UTC25m
2026-07-23 SKW3723 BNA → BOS Jul 23, 18:55 UTCJul 23, 20:40 UTC1h 45m
2026-07-23 SKW3730 MSP → MSN Jul 23, 15:30 UTCJul 23, 17:05 UTC1h 35m
2026-07-23 SKW4117 HPN → ATL Jul 23, 12:55 UTCJul 23, 14:20 UTC1h 25m
2026-07-23 SKW4095 ATL → FWA Jul 23, 01:40 UTCJul 23, 02:55 UTC1h 15m
2026-07-22 SKW3579 MSP → MSN Jul 22, 23:35 UTCJul 23, 00:10 UTC35m
2026-07-22 SKW3579 MSP → MSN Jul 22, 21:50 UTCJul 22, 22:10 UTC20m
2026-07-22 SKW3863 MOT → MSP Jul 22, 18:30 UTCJul 22, 19:55 UTC1h 25m
2026-07-22 SKW4064 DTW → MSN Jul 22, 15:25 UTCJul 22, 16:45 UTC1h 20m
2026-07-22 SKW3946 ORD → JFK Jul 22, 11:20 UTCJul 22, 13:45 UTC2h 25m
2026-07-22 SKW4118 OKC → LGA Jul 22, 00:15 UTCJul 22, 03:10 UTC2h 55m
2026-07-21 SKW4442 BOS → JFK Jul 21, 20:40 UTCJul 21, 22:05 UTC1h 25m
2026-07-21 SKW4442 BOS → JFK Jul 21, 20:39 UTCJul 21, 22:00 UTC1h 21m
2026-07-21 SKW4442 BOS → JFK Jul 21, 18:05 UTCJul 21, 19:30 UTC1h 25m
2026-07-21 SKW3924 - Jul 21, 13:50 UTCJul 21, 16:35 UTC2h 45m
2026-07-21 SKW3704 GFK → MSP Jul 21, 00:25 UTCJul 21, 01:55 UTC1h 30m
2026-07-20 SKW3842 SJC → LAX Jul 20, 22:10 UTCJul 20, 23:10 UTC1h 0m
2026-07-20 SKW3842 - Jul 20, 20:05 UTCJul 20, 20:50 UTC45m
2026-07-20 SKW3700 EWR → MSP Jul 20, 16:35 UTCJul 20, 17:50 UTC1h 15m
2026-07-20 SKW3700 EWR → MSP Jul 20, 14:20 UTCJul 20, 15:20 UTC1h 0m
2026-07-20 SKW3759 JFK → BNA Jul 20, 04:15 UTCJul 20, 05:25 UTC1h 10m
2026-07-20 SKW3759 JFK → BNA Jul 20, 02:15 UTCJul 20, 03:15 UTC1h 0m
2026-07-20 SKW3778 - Jul 20, 00:05 UTCJul 20, 01:15 UTC1h 10m
2026-07-19 SKW3717 SLC → TUS Jul 19, 21:15 UTCJul 19, 23:00 UTC1h 45m
2026-07-19 SKW3718 BNA → JFK Jul 19, 18:30 UTCJul 19, 20:10 UTC1h 40m
2026-07-19 SKW3718 BNA → JFK Jul 19, 18:26 UTCJul 19, 20:09 UTC1h 43m
2026-07-19 SKW3718 BNA → JFK Jul 19, 15:40 UTCJul 19, 17:05 UTC1h 25m
2026-07-19 SKW4037 SUN → SLC Jul 19, 13:35 UTCJul 19, 14:05 UTC30m
2026-07-19 SKW4037 SUN → SLC Jul 19, 13:35 UTCJul 19, 14:00 UTC25m
2026-07-19 SKW3985 - Jul 19, 03:10 UTCJul 19, 03:40 UTC30m
2026-07-19 SKW148E ATL → HPN Jul 19, 01:05 UTCJul 19, 01:50 UTC45m
2026-07-19 SKW148E ATL → HPN Jul 19, 00:42 UTCJul 19, 01:40 UTC58m

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 N264SY page for operator, model, and routing details .

Mode-S A28F80 frequently asked

What is Mode-S code A28F80?
A28F80 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N264SY.
Where is Mode-S A28F80 registered?
Mode-S code A28F80 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 A28F80 broadcasting right now?
Mode-S A28F80 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A28F80, octal 50507600, decimal 10,653,568.
What flights does A28F80 operate?
Mode-S A28F80 has broadcast 20 distinct callsigns, including SKW4097, SKW4111, SKW4082, SKW3758, SKW4033.