Apparatus

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sensors Mode-S transponder

A17C65

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N195SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A17C65
Octal
50276145
Decimal
10,583,141
Country
US
Tail
N195SY
Type
E75L
Broadcasting now · callsign SKW3333 · 8,675 ft
Flights observed
669
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:15 UTC

Current position

A17C65 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A17C65 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
SKW3054 SkyWest Airlines 10 2026-07-24
SKW3289 - 9 2026-07-12
SKW3294 SkyWest Airlines 8 2026-07-23
SKW3116 - 8 2026-07-16
SKW3443 SkyWest Airlines 7 2026-05-30
SKW3410 SkyWest Airlines 7 2026-06-06
SKW3024 SkyWest Airlines 7 2026-06-05
SKW3018 - 7 2026-07-09
SKW847E - 6 2026-07-13
SKW3379 SkyWest Airlines 6 2026-06-04
SKW3376 SkyWest Airlines 6 2026-06-09
SKW3302 - 6 2026-07-21
SKW3295 SkyWest Airlines 6 2026-05-18
SKW3209 - 6 2026-07-16
SKW3079 SkyWest Airlines 6 2026-07-24
SKW3064 SkyWest Airlines 6 2026-06-05
SKW3047 - 6 2026-06-25
SKW3423 SkyWest Airlines 5 2026-07-24
SKW3417 - 5 2026-07-15
SKW3345 - 5 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3062 STS → PSP Jul 26, 19:45 UTCJul 26, 20:10 UTC25m
2026-07-26 SKW3063 LAX → PDX Jul 26, 18:10 UTCJul 26, 18:40 UTC30m
2026-07-26 SKW3370 PDX → SEA Jul 26, 14:30 UTCJul 26, 16:25 UTC1h 55m
2026-07-26 SKW3356 PSP → SFO Jul 26, 03:50 UTCJul 26, 04:50 UTC1h 0m
2026-07-26 SKW3356 PSP → SFO Jul 26, 03:55 UTCJul 26, 04:49 UTC54m
2026-07-26 SKW3248 SJC → SEA Jul 26, 01:50 UTCJul 26, 02:55 UTC1h 5m
2026-07-26 SKW3248 SJC → SEA Jul 26, 01:46 UTCJul 26, 02:49 UTC1h 3m
2026-07-25 SKW3494 SNA → SFO Jul 25, 23:25 UTCJul 26, 00:35 UTC1h 10m
2026-07-25 SKW3208 JAC → SFO Jul 25, 19:40 UTCJul 25, 21:35 UTC1h 55m
2026-07-25 SKW3468 JAC → SFO Jul 25, 16:45 UTCJul 25, 18:05 UTC1h 20m
2026-07-25 SKW3251 SNA → SFO Jul 25, 14:25 UTCJul 25, 15:30 UTC1h 5m
2026-07-25 SKW3464 SFO → LAX Jul 25, 04:15 UTCJul 25, 05:25 UTC1h 10m
2026-07-25 SKW3232 SAN → SFO Jul 25, 02:00 UTCJul 25, 03:05 UTC1h 5m
2026-07-24 SKW812T FAT → SAN Jul 24, 23:55 UTCJul 25, 00:45 UTC50m
2026-07-24 SKW3389 SAN → SJC Jul 24, 21:30 UTCJul 24, 22:15 UTC45m
2026-07-24 SKW3111 SFO → LAX Jul 24, 19:15 UTCJul 24, 20:30 UTC1h 15m
2026-07-24 SKW3079 SFO → SNA Jul 24, 16:31 UTCJul 24, 17:54 UTC1h 23m
2026-07-24 SKW3079 SFO → SNA Jul 24, 16:35 UTCJul 24, 17:55 UTC1h 20m
2026-07-24 SKW3054 YVR → SEA Jul 24, 13:50 UTCJul 24, 15:15 UTC1h 25m
2026-07-24 SKW3423 SFO → LAX Jul 24, 03:05 UTCJul 24, 04:00 UTC55m
2026-07-24 SKW3423 SFO → LAX Jul 24, 03:11 UTCJul 24, 04:30 UTC1h 19m
2026-07-24 SKW3306 OAK → PDX Jul 24, 01:10 UTCJul 24, 02:00 UTC50m
2026-07-23 SKW3305 LAX → SFO Jul 23, 23:30 UTCJul 24, 00:15 UTC45m
2026-07-23 SKW3294 GEG → SEA Jul 23, 21:05 UTCJul 23, 21:15 UTC10m
2026-07-23 SKW3294 GEG → SEA Jul 23, 21:09 UTCJul 23, 21:24 UTC15m
2026-07-23 SKW3294 GEG → SEA Jul 23, 19:30 UTCJul 23, 20:00 UTC30m
2026-07-23 SKW3089 RNO → SEA Jul 23, 16:40 UTCJul 23, 18:10 UTC1h 30m
2026-07-23 SKW3353 RDM → SFO Jul 23, 14:15 UTCJul 23, 15:10 UTC55m
2026-07-23 SKW3109 LAX → SFO Jul 23, 12:45 UTCJul 23, 13:20 UTC35m
2026-07-23 SKW3303 AUS → LAX Jul 23, 03:30 UTCJul 23, 05:25 UTC1h 55m
2026-07-22 SKW3369 PSP → SFO Jul 22, 22:45 UTCJul 22, 23:35 UTC50m
2026-07-22 SKW3369 PSP → SFO Jul 22, 18:50 UTCJul 22, 20:15 UTC1h 25m
2026-07-22 SKW3324 SNA → SFO Jul 22, 15:30 UTCJul 22, 17:25 UTC1h 55m
2026-07-22 SKW3319 SFO → SNA Jul 22, 02:55 UTCJul 22, 04:45 UTC1h 50m
2026-07-22 SKW3211 LEX → ORD Jul 22, 00:50 UTCJul 22, 02:00 UTC1h 10m
2026-07-21 SKW3210 ORD → LEX Jul 21, 21:40 UTCJul 21, 23:15 UTC1h 35m
2026-07-21 SKW3117 SAN → SLC Jul 21, 18:55 UTCJul 21, 20:25 UTC1h 30m
2026-07-21 SKW3122 PHX → STS Jul 21, 16:20 UTCJul 21, 17:55 UTC1h 35m
2026-07-21 SKW3315 LAX → SEA Jul 21, 13:35 UTCJul 21, 14:55 UTC1h 20m
2026-07-21 SKW3302 - Jul 21, 06:10 UTCJul 21, 07:15 UTC1h 5m
2026-07-21 SKW3249 SEA → SJC Jul 21, 01:45 UTCJul 21, 04:15 UTC2h 30m
2026-07-20 SKW3250 SAN → AUS Jul 20, 21:40 UTCJul 21, 00:45 UTC3h 4m
2026-07-20 SKW3111 - Jul 20, 19:20 UTCJul 20, 20:35 UTC1h 15m
2026-07-20 SKW3111 RNO → SAN Jul 20, 19:08 UTCJul 20, 20:31 UTC1h 23m
2026-07-20 SKW3079 - Jul 20, 16:35 UTCJul 20, 18:00 UTC1h 25m
2026-07-20 SKW3079 SEA → RNO Jul 20, 16:31 UTCJul 20, 18:00 UTC1h 29m
2026-07-20 SKW3054 YVR → SEA Jul 20, 03:00 UTCJul 20, 14:55 UTC11h 55m
2026-07-20 SKW3306 OAK → PDX Jul 20, 01:06 UTCJul 20, 01:36 UTC30m
2026-07-20 SKW3306 OAK → PDX Jul 20, 00:55 UTCJul 20, 01:50 UTC55m
2026-07-19 SKW3305 BFI → GEG Jul 19, 23:10 UTCJul 19, 23:50 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 N195SY page for operator, model, and routing details .

Mode-S A17C65 frequently asked

What is Mode-S code A17C65?
A17C65 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N195SY.
Where is Mode-S A17C65 registered?
Mode-S code A17C65 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 A17C65 broadcasting right now?
Yes. Mode-S A17C65 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A17C65, octal 50276145, decimal 10,583,141.
What flights does A17C65 operate?
Mode-S A17C65 has broadcast 20 distinct callsigns, including SKW3054, SKW3289, SKW3294, SKW3116, SKW3443.