Apparatus

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sensors Mode-S transponder

A26F6F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N256SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A26F6F
Octal
50467557
Decimal
10,645,359
Country
US
Tail
N256SY
Type
E75L
Broadcasting now · callsign SKW3508 · 27,125 ft
Flights observed
642
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Current position

A26F6F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A26F6F 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
SKW3915 SkyWest Airlines 14 2026-05-22
SKW4127 - 13 2026-06-22
SKW3876 SkyWest Airlines 13 2026-07-25
SKW3999 - 12 2026-06-24
SKW3712 SkyWest Airlines 10 2026-05-22
SKW3956 SkyWest Airlines 9 2026-06-10
SKW3806 - 9 2026-06-16
SKW3681 - 9 2026-07-07
SKW3669 SkyWest Airlines 9 2026-07-22
SKW4041 SkyWest Airlines 8 2026-06-10
SKW3945 SkyWest Airlines 8 2026-07-25
SKW4098 SkyWest Airlines 7 2026-05-22
SKW4063 - 7 2026-06-29
SKW4115 SkyWest Airlines 6 2026-05-22
SKW3820 SkyWest Airlines 6 2026-07-23
SKW3673 SkyWest Airlines 6 2026-06-05
SKW4175 SkyWest Airlines 5 2026-07-25
SKW4124 - 5 2026-06-19
SKW4070 SkyWest Airlines 5 2026-06-18
SKW4067 SkyWest Airlines 5 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3526 YWG → MSP Jul 26, 21:10 UTCJul 26, 21:45 UTC35m
2026-07-26 SKW192E IMT → DTW Jul 26, 18:45 UTCJul 26, 19:55 UTC1h 10m
2026-07-26 SKW3813 TWF → SLC Jul 26, 15:02 UTCJul 26, 17:25 UTC2h 23m
2026-07-26 SKW3813 TWF → SLC Jul 26, 15:05 UTCJul 26, 17:25 UTC2h 20m
2026-07-26 SKW4015 SEA → SFO Jul 26, 11:40 UTCJul 26, 13:35 UTC1h 55m
2026-07-26 SKW3731 SEA → SJC Jul 26, 00:25 UTCJul 26, 02:35 UTC2h 10m
2026-07-25 SKW4016 ATL → CRW Jul 25, 21:05 UTCJul 25, 22:15 UTC1h 10m
2026-07-25 SKW141E AUS → MSY Jul 25, 18:45 UTCJul 25, 19:55 UTC1h 10m
2026-07-25 SKW3876 SEA → SFO Jul 25, 15:40 UTCJul 25, 17:30 UTC1h 50m
2026-07-25 SKW3876 SEA → SFO Jul 25, 12:40 UTCJul 25, 14:35 UTC1h 55m
2026-07-25 SKW4175 MFE → AUS Jul 25, 10:30 UTCJul 25, 11:15 UTC45m
2026-07-25 SKW4067 AUS → MFE Jul 25, 04:00 UTCJul 25, 04:45 UTC45m
2026-07-25 SKW3945 JFK → ORD Jul 25, 00:15 UTCJul 25, 02:05 UTC1h 50m
2026-07-24 SKW3945 JFK → ORD Jul 24, 21:25 UTCJul 24, 23:15 UTC1h 50m
2026-07-24 SKW3955 ATL → MGM Jul 24, 17:10 UTCJul 24, 19:40 UTC2h 30m
2026-07-24 SKW3874 OMA → SLC Jul 24, 13:35 UTCJul 24, 15:55 UTC2h 20m
2026-07-24 SKW3706 BNA → JFK Jul 24, 02:55 UTCJul 24, 04:45 UTC1h 50m
2026-07-23 SKW3820 SLC → OAK Jul 23, 22:50 UTCJul 23, 23:45 UTC55m
2026-07-23 SKW3820 SLC → OAK Jul 23, 22:51 UTCJul 23, 23:59 UTC1h 8m
2026-07-23 SKW3820 SLC → OAK Jul 23, 20:25 UTCJul 23, 21:55 UTC1h 30m
2026-07-23 SKW4038 SEA → SJC Jul 23, 17:55 UTCJul 23, 19:00 UTC1h 5m
2026-07-23 SKW4038 SEA → SJC Jul 23, 18:02 UTCJul 23, 18:54 UTC52m
2026-07-23 SKW102P SGU → SLC Jul 23, 15:55 UTCJul 23, 16:55 UTC1h 0m
2026-07-23 SKW3937 SEA → MFR Jul 23, 03:30 UTCJul 23, 05:00 UTC1h 30m
2026-07-23 SKW3937 SEA → MFR Jul 23, 01:05 UTCJul 23, 02:35 UTC1h 30m
2026-07-22 SKW3908 ATL → CRW Jul 22, 21:30 UTCJul 23, 00:05 UTC2h 35m
2026-07-22 SKW3960 DTW → SDF Jul 22, 17:30 UTCJul 22, 19:15 UTC1h 45m
2026-07-22 SKW3960 DTW → SDF Jul 22, 13:40 UTCJul 22, 15:30 UTC1h 50m
2026-07-22 SKW3669 DTW → YUL Jul 22, 01:55 UTCJul 22, 03:40 UTC1h 45m
2026-07-21 SKW3669 DTW → YUL Jul 21, 21:55 UTCJul 21, 23:45 UTC1h 50m
2026-07-21 SKW3669 DTW → YUL Jul 21, 22:02 UTCJul 21, 23:33 UTC1h 31m
2026-07-21 SKW4028 SEA → SFO Jul 21, 18:00 UTCJul 21, 20:20 UTC2h 20m
2026-07-21 SKW4028 SEA → SFO Jul 21, 18:06 UTCJul 21, 20:19 UTC2h 13m
2026-07-21 SKW4028 SEA → SFO Jul 21, 14:25 UTCJul 21, 16:55 UTC2h 30m
2026-07-21 SKW4088 JFK → BOS Jul 21, 11:50 UTCJul 21, 13:20 UTC1h 30m
2026-07-21 SKW3952 ATL → HPN Jul 21, 01:00 UTCJul 21, 02:25 UTC1h 25m
2026-07-20 SKW4016 ATL → CRW Jul 20, 21:10 UTCJul 20, 22:20 UTC1h 10m
2026-07-20 SKW141E AUS → MSY Jul 20, 18:35 UTCJul 20, 19:45 UTC1h 10m
2026-07-20 SKW3876 DEN → AUS Jul 20, 15:45 UTCJul 20, 17:40 UTC1h 55m
2026-07-20 SKW3876 AUS → DEN Jul 20, 12:35 UTCJul 20, 14:15 UTC1h 40m
2026-07-20 SKW4175 MFE → AUS Jul 20, 10:25 UTCJul 20, 11:15 UTC50m
2026-07-20 SKW4067 AUS → MFE Jul 20, 03:55 UTCJul 20, 04:45 UTC50m
2026-07-19 SKW4027 - Jul 19, 22:40 UTCJul 20, 00:45 UTC2h 5m
2026-07-19 SKW4027 AUS → IND Jul 19, 19:20 UTCJul 19, 21:30 UTC2h 10m
2026-07-19 SKW4101 SJC → SLC Jul 19, 15:45 UTCJul 19, 17:50 UTC2h 5m
2026-07-19 SKW4101 SJC → SLC Jul 19, 12:20 UTCJul 19, 14:25 UTC2h 5m
2026-07-18 SKW3772 SFO → SEA Jul 18, 22:45 UTCJul 19, 01:00 UTC2h 15m
2026-07-18 SKW107K AUS → JAX Jul 18, 19:10 UTCJul 18, 21:20 UTC2h 10m
2026-07-18 SKW4101 SJC → SLC Jul 18, 15:45 UTCJul 18, 17:50 UTC2h 5m
2026-07-18 SKW4101 SJC → SLC Jul 18, 12:20 UTCJul 18, 14:25 UTC2h 5m

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 N256SY page for operator, model, and routing details .

Mode-S A26F6F frequently asked

What is Mode-S code A26F6F?
A26F6F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N256SY.
Where is Mode-S A26F6F registered?
Mode-S code A26F6F 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 A26F6F broadcasting right now?
Yes. Mode-S A26F6F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A26F6F, octal 50467557, decimal 10,645,359.
What flights does A26F6F operate?
Mode-S A26F6F has broadcast 20 distinct callsigns, including SKW3915, SKW4127, SKW3876, SKW3999, SKW3712.