Apparatus

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sensors Mode-S transponder

A65598

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N507SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A65598
Octal
51452630
Decimal
10,900,888
Country
US
Tail
N507SY
Type
E75L
Broadcasting now · callsign SKW6427 · 35,000 ft
Flights observed
642
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Current position

A65598 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A65598 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
SKW6368 SkyWest Airlines 18 2026-07-22
SKW6361 - 14 2026-06-28
SKW6253 SkyWest Airlines 14 2026-07-22
SKW6283 SkyWest Airlines 13 2026-05-06
SKW4915 - 13 2026-07-18
SKW6220 - 12 2026-07-17
SKW5011 SkyWest Airlines 12 2026-05-20
SKW6435 SkyWest Airlines 11 2026-07-23
SKW6425 SkyWest Airlines 11 2026-07-24
SKW4983 - 11 2026-07-17
SKW4906 SkyWest Airlines 11 2026-07-21
SKW4975 - 10 2026-07-16
SKW4925 - 10 2026-07-10
SKW6416 - 9 2026-07-18
SKW6367 - 9 2026-07-13
SKW6336 SkyWest Airlines 9 2026-06-19
SKW6315 SkyWest Airlines 9 2026-07-25
SKW6188 - 9 2026-06-19
SKW4982 - 9 2026-07-17
SKW4944 - 9 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW6278 PHX → BFL Jul 26, 21:05 UTCJul 26, 22:00 UTC55m
2026-07-26 SKW6278 PHX → BFL Jul 26, 17:05 UTCJul 26, 20:10 UTC3h 5m
2026-07-26 SKW6293 LAX → SJC Jul 26, 11:50 UTCJul 26, 15:45 UTC3h 55m
2026-07-26 SKW5000 ORD → FSD Jul 26, 01:45 UTCJul 26, 05:10 UTC3h 25m
2026-07-25 SKW6221 FAT → PHX Jul 25, 23:35 UTCJul 26, 00:45 UTC1h 10m
2026-07-25 SKW6221 FAT → PHX Jul 25, 21:55 UTCJul 25, 22:50 UTC55m
2026-07-25 SKW4887 RNO → LAX Jul 25, 18:20 UTCJul 25, 19:55 UTC1h 35m
2026-07-25 SKW4887 RNO → LAX Jul 25, 15:45 UTCJul 25, 17:25 UTC1h 40m
2026-07-25 SKW6393 TUS → LAX Jul 25, 13:10 UTCJul 25, 14:15 UTC1h 5m
2026-07-25 SKW6315 LAX → ABQ Jul 25, 02:35 UTCJul 25, 03:45 UTC1h 10m
2026-07-24 SKW6270 LAX → SFO Jul 24, 23:10 UTCJul 25, 01:35 UTC2h 25m
2026-07-24 SKW6270 LAX → SFO Jul 24, 19:35 UTCJul 24, 21:20 UTC1h 45m
2026-07-24 SKW6425 MAF → DFW Jul 24, 17:40 UTCJul 24, 18:20 UTC40m
2026-07-24 SKW6425 MAF → DFW Jul 24, 15:35 UTCJul 24, 16:20 UTC45m
2026-07-24 SKW4971 DFW → LRD Jul 24, 00:30 UTCJul 24, 03:40 UTC3h 10m
2026-07-23 SKW4971 DFW → LRD Jul 23, 20:30 UTCJul 23, 23:25 UTC2h 55m
2026-07-23 SKW6428 PHX → SLC Jul 23, 18:40 UTCJul 23, 19:40 UTC1h 0m
2026-07-23 SKW6428 PHX → SLC Jul 23, 18:21 UTCJul 23, 19:35 UTC1h 14m
2026-07-23 SKW4911 DFW → DRO Jul 23, 15:45 UTCJul 23, 17:25 UTC1h 40m
2026-07-23 SKW6328 DRO → PHX Jul 23, 12:10 UTCJul 23, 13:05 UTC55m
2026-07-23 SKW6328 DRO → PHX Jul 23, 12:05 UTCJul 23, 13:04 UTC59m
2026-07-23 SKW6334 PHX → DRO Jul 23, 05:00 UTCJul 23, 06:00 UTC1h 0m
2026-07-23 SKW6334 PHX → DRO Jul 23, 05:00 UTCJul 23, 05:45 UTC45m
2026-07-23 SKW6435 LAX → ABQ Jul 23, 02:05 UTCJul 23, 03:25 UTC1h 20m
2026-07-23 SKW6435 LAX → ABQ Jul 23, 00:00 UTCJul 23, 01:10 UTC1h 10m
2026-07-22 SKW6253 ORD → SGF Jul 22, 20:35 UTCJul 22, 22:30 UTC1h 55m
2026-07-22 SKW6253 ORD → SGF Jul 22, 17:30 UTCJul 22, 19:25 UTC1h 55m
2026-07-22 SKW4893 YUM → PHX Jul 22, 13:25 UTCJul 22, 15:45 UTC2h 20m
2026-07-22 SKW6420 SEA → LAX Jul 22, 03:00 UTCJul 22, 05:25 UTC2h 25m
2026-07-22 SKW6368 PHX → ELP Jul 22, 01:10 UTCJul 22, 01:35 UTC25m
2026-07-21 SKW6368 PHX → ELP Jul 21, 23:30 UTCJul 21, 23:55 UTC25m
2026-07-21 SKW4906 PHX → TUS Jul 21, 16:05 UTCJul 21, 22:00 UTC5h 55m
2026-07-20 SKW4934 PHX → MFR Jul 20, 23:30 UTCJul 21, 01:25 UTC1h 54m
2026-07-20 SKW4934 PHX → MFR Jul 20, 20:40 UTCJul 20, 22:15 UTC1h 35m
2026-07-20 SKW4995 DFW → LAW Jul 20, 18:15 UTCJul 20, 19:20 UTC1h 5m
2026-07-20 SKW4995 DFW → LAW Jul 20, 18:08 UTCJul 20, 19:19 UTC1h 11m
2026-07-20 SKW4995 DFW → LAW Jul 20, 16:15 UTCJul 20, 17:10 UTC55m
2026-07-20 SKW4900 - Jul 20, 14:20 UTCJul 20, 14:50 UTC30m
2026-07-20 SKW6315 LAX → ABQ Jul 20, 04:05 UTCJul 20, 05:15 UTC1h 10m
2026-07-19 SKW6270 - Jul 19, 21:20 UTCJul 20, 03:10 UTC5h 50m
2026-07-19 SKW6428 PHX → SLC Jul 19, 19:20 UTCJul 19, 20:20 UTC1h 0m
2026-07-19 SKW4911 - Jul 19, 16:30 UTCJul 19, 18:00 UTC1h 30m
2026-07-19 SKW4911 DFW → DRO Jul 19, 16:30 UTCJul 19, 18:06 UTC1h 36m
2026-07-18 SKW6416 BZN → PHX Jul 18, 23:42 UTCJul 19, 01:46 UTC2h 4m
2026-07-18 SKW6416 PHX → PHX Jul 18, 20:25 UTCJul 19, 01:50 UTC5h 25m
2026-07-18 SKW4995 DFW → LAW Jul 18, 18:30 UTCJul 18, 19:30 UTC1h 0m
2026-07-18 SKW4995 DFW → LAW Jul 18, 16:15 UTCJul 18, 17:20 UTC1h 5m
2026-07-18 SKW6401 MFR → PHX Jul 18, 12:20 UTCJul 18, 14:30 UTC2h 10m
2026-07-18 SKW6401 MFR → PHX Jul 18, 12:20 UTCJul 18, 14:28 UTC2h 8m
2026-07-18 SKW4915 - Jul 18, 04:30 UTCJul 18, 06:25 UTC1h 55m

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 N507SY page for operator, model, and routing details .

Mode-S A65598 frequently asked

What is Mode-S code A65598?
A65598 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N507SY.
Where is Mode-S A65598 registered?
Mode-S code A65598 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 A65598 broadcasting right now?
Yes. Mode-S A65598 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A65598, octal 51452630, decimal 10,900,888.
What flights does A65598 operate?
Mode-S A65598 has broadcast 20 distinct callsigns, including SKW6368, SKW6361, SKW6253, SKW6283, SKW4915.