Apparatus

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sensors Mode-S transponder

A64E2A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N505SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A64E2A
Octal
51447052
Decimal
10,898,986
Country
US
Tail
N505SY
Type
E75L
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
656
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A64E2A.

Country allocation

The ICAO 24-bit address A64E2A 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
SKW6308 SkyWest Airlines 18 2026-05-19
SKW4995 - 16 2026-07-15
SKW6185 SkyWest Airlines 15 2026-05-14
SKW6422 SkyWest Airlines 13 2026-04-26
SKW6415 - 13 2026-07-16
SKW6404 SkyWest Airlines 13 2026-07-19
SKW6360 SkyWest Airlines 13 2026-07-24
SKW4975 SkyWest Airlines 13 2026-07-25
SKW6292 SkyWest Airlines 12 2026-07-24
SKW4971 SkyWest Airlines 12 2026-07-26
SKW6368 - 11 2026-07-18
SKW6220 SkyWest Airlines 11 2026-06-28
SKW6217 - 11 2026-06-28
SKW4934 SkyWest Airlines 11 2026-07-19
SKW4925 - 11 2026-06-22
SKW4992 SkyWest Airlines 10 2026-05-19
SKW6510 - 9 2026-06-25
SKW6367 - 9 2026-07-19
SKW6253 SkyWest Airlines 9 2026-07-21
SKW4944 SkyWest Airlines 9 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4971 DFW → LRD Jul 26, 20:45 UTCJul 26, 22:30 UTC1h 45m
2026-07-26 SKW6428 PHX → SLC Jul 26, 18:45 UTCJul 26, 19:45 UTC1h 0m
2026-07-26 SKW6428 PHX → SLC Jul 26, 18:42 UTCJul 26, 19:41 UTC59m
2026-07-26 SKW4911 DFW → DRO Jul 26, 16:11 UTCJul 26, 17:45 UTC1h 34m
2026-07-26 SKW4911 DFW → DRO Jul 26, 16:10 UTCJul 26, 17:45 UTC1h 35m
2026-07-26 SKW6328 DRO → PHX Jul 26, 14:05 UTCJul 26, 14:50 UTC45m
2026-07-26 SKW6334 PHX → DRO Jul 26, 05:15 UTCJul 26, 05:55 UTC40m
2026-07-26 SKW6435 LAX → ABQ Jul 26, 02:15 UTCJul 26, 03:45 UTC1h 30m
2026-07-26 SKW6435 LAX → ABQ Jul 26, 02:13 UTCJul 26, 03:35 UTC1h 22m
2026-07-26 SKW6435 LAX → ABQ Jul 26, 00:15 UTCJul 26, 01:30 UTC1h 15m
2026-07-25 SKW4948 YUM → PHX Jul 25, 20:05 UTCJul 25, 22:15 UTC2h 10m
2026-07-25 SKW4948 YUM → PHX Jul 25, 20:07 UTCJul 25, 22:09 UTC2h 2m
2026-07-25 SKW4948 YUM → PHX Jul 25, 17:30 UTCJul 25, 19:05 UTC1h 35m
2026-07-25 SKW6475 PHX → DRO Jul 25, 14:20 UTCJul 25, 16:10 UTC1h 50m
2026-07-25 SKW6475 PHX → DRO Jul 25, 14:22 UTCJul 25, 16:05 UTC1h 43m
2026-07-25 SKW6332 LAX → AUS Jul 25, 04:30 UTCJul 25, 06:25 UTC1h 55m
2026-07-25 SKW6332 LAX → AUS Jul 25, 04:27 UTCJul 25, 06:21 UTC1h 54m
2026-07-25 SKW4975 SJT → DFW Jul 25, 01:30 UTCJul 25, 02:20 UTC50m
2026-07-24 SKW4975 SJT → DFW Jul 24, 23:00 UTCJul 24, 23:50 UTC50m
2026-07-24 SKW6416 LAX → SFO Jul 24, 16:20 UTCJul 24, 21:45 UTC5h 25m
2026-07-24 SKW6360 ORD → LEX Jul 24, 12:35 UTCJul 24, 14:50 UTC2h 15m
2026-07-24 SKW6292 ORD → ICT Jul 24, 06:00 UTCJul 24, 08:15 UTC2h 15m
2026-07-24 SKW6276 LAX → SFO Jul 24, 00:05 UTCJul 24, 01:55 UTC1h 50m
2026-07-23 SKW6276 LAX → SFO Jul 23, 20:50 UTCJul 23, 22:55 UTC2h 5m
2026-07-23 SKW4928 LAX → SFO Jul 23, 02:20 UTCJul 23, 03:35 UTC1h 15m
2026-07-22 SKW4928 LAX → SFO Jul 22, 23:55 UTCJul 23, 01:15 UTC1h 20m
2026-07-22 SKW4948 YUM → PHX Jul 22, 20:30 UTCJul 22, 22:20 UTC1h 50m
2026-07-22 SKW4948 YUM → PHX Jul 22, 20:28 UTCJul 22, 22:19 UTC1h 51m
2026-07-22 SKW4948 YUM → PHX Jul 22, 17:35 UTCJul 22, 19:15 UTC1h 40m
2026-07-22 SKW6401 MFR → PHX Jul 22, 12:35 UTCJul 22, 14:40 UTC2h 5m
2026-07-22 SKW4915 ORD → MLI Jul 22, 04:46 UTCJul 22, 06:41 UTC1h 55m
2026-07-22 SKW4915 ORD → MLI Jul 22, 04:45 UTCJul 22, 05:25 UTC40m
2026-07-22 SKW4944 PHX → PSC Jul 22, 02:25 UTCJul 22, 03:35 UTC1h 10m
2026-07-22 SKW4944 PHX → PSC Jul 22, 00:15 UTCJul 22, 01:15 UTC1h 0m
2026-07-21 SKW6253 ORD → SGF Jul 21, 20:45 UTCJul 21, 23:10 UTC2h 25m
2026-07-21 SKW6253 ORD → SGF Jul 21, 17:30 UTCJul 21, 19:20 UTC1h 50m
2026-07-21 SKW6475 PHX → DRO Jul 21, 14:30 UTCJul 21, 16:25 UTC1h 55m
2026-07-21 SKW6332 LAX → AUS Jul 21, 02:50 UTCJul 21, 04:25 UTC1h 35m
2026-07-20 SKW4812 OKC → PHX Jul 20, 18:55 UTCJul 20, 19:40 UTC45m
2026-07-20 SKW4811 PHX → SGU Jul 20, 16:40 UTCJul 20, 17:10 UTC30m
2026-07-19 SKW4934 PHX → MFR Jul 19, 23:30 UTCJul 20, 01:20 UTC1h 50m
2026-07-19 SKW4934 PHX → MFR Jul 19, 20:50 UTCJul 19, 22:30 UTC1h 40m
2026-07-19 SKW6367 - Jul 19, 17:35 UTCJul 19, 18:00 UTC25m
2026-07-19 SKW6367 TUS → PHX Jul 19, 17:35 UTCJul 19, 18:01 UTC26m
2026-07-19 SKW6367 PHX → TUS Jul 19, 16:15 UTCJul 19, 16:45 UTC30m
2026-07-19 SKW6404 SFO → PHX Jul 19, 13:20 UTCJul 19, 15:00 UTC1h 40m
2026-07-19 SKW6404 SFO → PHX Jul 19, 13:20 UTCJul 19, 14:55 UTC1h 35m
2026-07-19 SKW6260 - Jul 19, 05:15 UTCJul 19, 06:05 UTC50m
2026-07-19 SKW4958 DEN → LAX Jul 19, 01:06 UTCJul 19, 02:58 UTC1h 52m
2026-07-19 SKW4958 - Jul 19, 01:10 UTCJul 19, 03:00 UTC1h 50m

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 N505SY page for operator, model, and routing details .

Mode-S A64E2A frequently asked

What is Mode-S code A64E2A?
A64E2A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N505SY.
Where is Mode-S A64E2A registered?
Mode-S code A64E2A 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 A64E2A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A64E2A, octal 51447052, decimal 10,898,986.
What flights does A64E2A operate?
Mode-S A64E2A has broadcast 20 distinct callsigns, including SKW6308, SKW4995, SKW6185, SKW6422, SKW6415.