Apparatus

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sensors Mode-S transponder

A305FD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N294SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A305FD
Octal
50602775
Decimal
10,683,901
Country
US
Tail
N294SY
Type
E75L
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
616
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A305FD.

Country allocation

The ICAO 24-bit address A305FD 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
SKW3798 - 13 2026-07-03
SKW3795 SkyWest Airlines 13 2026-06-06
SKW3903 - 12 2026-06-19
SKW3982 SkyWest Airlines 11 2026-06-03
SKW4134 - 10 2026-07-06
SKW3820 - 10 2026-07-19
SKW3620 - 10 2026-07-18
SKW4112 SkyWest Airlines 8 2026-06-15
SKW3765 - 8 2026-07-14
SKW3745 SkyWest Airlines 8 2026-06-15
SKW4054 - 7 2026-06-15
SKW3792 SkyWest Airlines 7 2026-04-17
SKW3761 SkyWest Airlines 7 2026-04-17
SKW4152 SkyWest Airlines 6 2026-07-03
SKW4127 - 6 2026-07-16
SKW4101 SkyWest Airlines 6 2026-07-25
SKW4042 SkyWest Airlines 6 2026-05-30
SKW3981 SkyWest Airlines 6 2026-04-20
SKW3916 - 6 2026-06-28
SKW3876 - 6 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4027 BOS → CLE Jul 26, 19:40 UTCJul 26, 21:15 UTC1h 35m
2026-07-26 SKW3960 DTW → SDF Jul 26, 16:30 UTCJul 26, 18:10 UTC1h 40m
2026-07-26 SKW3960 DTW → SDF Jul 26, 13:45 UTCJul 26, 15:40 UTC1h 55m
2026-07-26 SKW3772 SFO → SEA Jul 26, 00:50 UTCJul 26, 02:55 UTC2h 5m
2026-07-25 SKW107K AUS → JAX Jul 25, 19:50 UTCJul 25, 21:55 UTC2h 5m
2026-07-25 SKW4101 SJC → SLC Jul 25, 15:55 UTCJul 25, 18:05 UTC2h 10m
2026-07-25 SKW4101 SJC → SLC Jul 25, 12:30 UTCJul 25, 14:40 UTC2h 10m
2026-07-24 SKW3747 OAK → LAX Jul 24, 16:45 UTCJul 24, 18:50 UTC2h 5m
2026-07-24 SKW3747 OAK → LAX Jul 24, 13:40 UTCJul 24, 15:40 UTC2h 0m
2026-07-23 SKW3772 SFO → SEA Jul 23, 19:40 UTCJul 23, 21:35 UTC1h 55m
2026-07-23 SKW107K AUS → JAX Jul 23, 15:25 UTCJul 23, 17:35 UTC2h 10m
2026-07-23 SKW4146 MSN → MSP Jul 23, 12:25 UTCJul 23, 14:15 UTC1h 50m
2026-07-23 SKW4163 AUS → BNA Jul 23, 00:25 UTCJul 23, 02:10 UTC1h 45m
2026-07-22 SKW4028 SEA → SFO Jul 22, 18:10 UTCJul 22, 20:30 UTC2h 20m
2026-07-22 SKW4028 SEA → SFO Jul 22, 14:55 UTCJul 22, 17:25 UTC2h 30m
2026-07-22 SKW4088 JFK → BOS Jul 22, 12:00 UTCJul 22, 13:30 UTC1h 30m
2026-07-22 SKW3952 ATL → HPN Jul 22, 01:00 UTCJul 22, 02:35 UTC1h 35m
2026-07-21 SKW4053 - Jul 21, 22:10 UTCJul 21, 23:05 UTC55m
2026-07-21 SKW4053 - Jul 21, 20:20 UTCJul 21, 21:10 UTC50m
2026-07-21 SKW3747 PHX → AUS Jul 21, 17:10 UTCJul 21, 19:10 UTC2h 0m
2026-07-21 SKW3747 AUS → PHX Jul 21, 14:35 UTCJul 21, 16:25 UTC1h 50m
2026-07-21 SKW3734 - Jul 21, 01:15 UTCJul 21, 03:15 UTC2h 0m
2026-07-21 SKW3734 TPA → AUS Jul 21, 00:42 UTCJul 21, 03:18 UTC2h 36m
2026-07-20 SKW3734 AUS → TPA Jul 20, 21:30 UTCJul 20, 23:45 UTC2h 15m
2026-07-20 SKW3955 ATL → MGM Jul 20, 16:55 UTCJul 20, 19:45 UTC2h 50m
2026-07-20 SKW3955 ATL → MGM Jul 20, 16:58 UTCJul 20, 19:41 UTC2h 43m
2026-07-20 SKW4006 - Jul 20, 13:20 UTCJul 20, 15:25 UTC2h 5m
2026-07-20 SKW3825 MSP → MOT Jul 20, 03:05 UTCJul 20, 05:15 UTC2h 10m
2026-07-19 SKW3820 ABQ → SLC Jul 19, 23:00 UTCJul 20, 00:20 UTC1h 20m
2026-07-19 SKW3820 ABQ → SLC Jul 19, 22:51 UTCJul 20, 00:15 UTC1h 24m
2026-07-19 SKW3820 SLC → ABQ Jul 19, 20:25 UTCJul 19, 21:45 UTC1h 20m
2026-07-19 SKW4038 - Jul 19, 18:10 UTCJul 19, 19:25 UTC1h 15m
2026-07-19 SKW102P - Jul 19, 16:05 UTCJul 19, 17:05 UTC1h 0m
2026-07-19 SKW3820 ABQ → SLC Jul 19, 00:25 UTCJul 19, 01:40 UTC1h 15m
2026-07-18 SKW3820 SLC → ABQ Jul 18, 22:00 UTCJul 18, 23:20 UTC1h 20m
2026-07-18 SKW3796 - Jul 18, 16:00 UTCJul 18, 18:10 UTC2h 10m
2026-07-18 SKW3620 SLC → XNA Jul 18, 01:10 UTCJul 18, 03:20 UTC2h 11m
2026-07-17 SKW3820 - Jul 17, 22:55 UTCJul 18, 00:15 UTC1h 20m
2026-07-17 SKW3820 ABQ → SLC Jul 17, 22:48 UTCJul 18, 00:09 UTC1h 21m
2026-07-17 SKW3820 SLC → ABQ Jul 17, 20:29 UTCJul 17, 21:55 UTC1h 25m
2026-07-17 SKW4038 - Jul 17, 18:05 UTCJul 17, 19:15 UTC1h 10m
2026-07-17 SKW102P - Jul 17, 16:04 UTCJul 17, 17:05 UTC1h 0m
2026-07-17 SKW3708 EUG → SLC Jul 17, 13:15 UTCJul 17, 14:44 UTC1h 30m
2026-07-17 SKW137C SLC → EUG Jul 17, 07:05 UTCJul 17, 08:35 UTC1h 30m
2026-07-17 SKW3856 - Jul 17, 04:54 UTCJul 17, 06:25 UTC1h 30m
2026-07-17 SKW3856 SNA → SLC Jul 17, 04:54 UTCJul 17, 06:19 UTC1h 25m
2026-07-17 SKW3856 - Jul 17, 02:20 UTCJul 17, 04:14 UTC1h 55m
2026-07-17 SKW3801 JFK → IAD Jul 17, 00:10 UTCJul 17, 00:45 UTC35m
2026-07-16 SKW3801 JFK → IAD Jul 16, 23:20 UTCJul 16, 23:29 UTC10m
2026-07-16 SKW3779 SEA → MFR Jul 16, 21:00 UTCJul 16, 22:10 UTC1h 10m

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 N294SY page for operator, model, and routing details .

Mode-S A305FD frequently asked

What is Mode-S code A305FD?
A305FD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N294SY.
Where is Mode-S A305FD registered?
Mode-S code A305FD 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 A305FD broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A305FD, octal 50602775, decimal 10,683,901.
What flights does A305FD operate?
Mode-S A305FD has broadcast 20 distinct callsigns, including SKW3798, SKW3795, SKW3903, SKW3982, SKW4134.