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sensors Mode-S transponder

A98515

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N712SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A98515
Octal
52302425
Decimal
11,109,653
Country
US
Tail
N712SK
Type
CRJ7
No current signal · last broadcast Jul 26, 18:00 UTC
Flights observed
636
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:00 UTC

Last known position

Most recent position reported by Mode-S A98515.

Country allocation

The ICAO 24-bit address A98515 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
SKW4229 - 25 2026-07-14
SKW4329 - 24 2026-07-20
SKW4274 SkyWest Airlines 24 2026-07-25
SKW4305 - 23 2026-07-15
SKW4283 - 22 2026-07-12
SKW4266 - 22 2026-07-12
SKW4245 - 22 2026-07-01
SKW4330 - 19 2026-07-20
SKW4290 SkyWest Airlines 17 2026-07-26
SKW4288 SkyWest Airlines 17 2026-07-26
SKW4270 - 17 2026-07-21
SKW4238 - 17 2026-07-21
SKW4301 - 16 2026-07-11
SKW4262 - 16 2026-07-15
SKW4236 - 16 2026-07-02
SKW4338 SkyWest Airlines 15 2026-07-23
SKW4336 - 15 2026-07-12
SKW4284 - 15 2026-07-13
SKW4261 - 14 2026-07-21
SKW4335 - 13 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4288 IMT → MSP Jul 26, 17:00 UTCJul 26, 17:50 UTC50m
2026-07-26 SKW4290 DTW → IMT Jul 26, 15:15 UTCJul 26, 16:00 UTC45m
2026-07-26 SKW4313 MQT → MSP Jul 26, 13:30 UTCJul 26, 14:10 UTC40m
2026-07-26 SKW4297 DTW → MQT Jul 26, 02:00 UTCJul 26, 02:50 UTC50m
2026-07-25 SKW4252 DTW → APN Jul 25, 23:25 UTCJul 25, 23:50 UTC25m
2026-07-25 SKW4252 DTW → APN Jul 25, 23:13 UTCJul 25, 23:49 UTC36m
2026-07-25 SKW4232 DTW → PLN Jul 25, 21:55 UTCJul 25, 22:20 UTC25m
2026-07-25 SKW4176 MSP → MOT Jul 25, 20:10 UTCJul 25, 20:55 UTC45m
2026-07-25 SKW4176 MSP → MOT Jul 25, 20:16 UTCJul 25, 20:54 UTC38m
2026-07-25 SKW4621 CMH → DTW Jul 25, 16:25 UTCJul 25, 17:40 UTC1h 15m
2026-07-25 SKW4274 DTW → APN Jul 25, 14:45 UTCJul 25, 15:10 UTC25m
2026-07-25 SKW4274 DTW → APN Jul 25, 12:45 UTCJul 25, 13:10 UTC25m
2026-07-25 SKW4244 ESC → DTW Jul 25, 10:30 UTCJul 25, 11:15 UTC45m
2026-07-25 SKW176R SEA → SFO Jul 25, 01:50 UTCJul 25, 02:30 UTC40m
2026-07-24 SKW4252 DTW → APN Jul 24, 21:55 UTCJul 24, 22:25 UTC30m
2026-07-24 SKW4232 DTW → PLN Jul 24, 20:10 UTCJul 24, 20:35 UTC25m
2026-07-24 SKW4274 DTW → APN Jul 24, 14:30 UTCJul 24, 14:55 UTC25m
2026-07-24 SKW4274 DTW → APN Jul 24, 12:55 UTCJul 24, 13:20 UTC25m
2026-07-24 SKW4244 ESC → DTW Jul 24, 10:30 UTCJul 24, 11:15 UTC45m
2026-07-24 SKW176R SEA → SFO Jul 24, 02:00 UTCJul 24, 02:40 UTC40m
2026-07-23 SKW4252 DTW → APN Jul 23, 22:05 UTCJul 23, 22:35 UTC30m
2026-07-23 SKW4232 DTW → PLN Jul 23, 20:10 UTCJul 23, 20:35 UTC25m
2026-07-23 SKW4338 PLN → DTW Jul 23, 15:05 UTCJul 23, 15:45 UTC40m
2026-07-23 SKW4338 PLN → DTW Jul 23, 13:10 UTCJul 23, 13:40 UTC30m
2026-07-21 SKW4294 IMT → MSP Jul 21, 22:20 UTCJul 21, 23:05 UTC45m
2026-07-21 SKW4270 - Jul 21, 20:40 UTCJul 21, 21:05 UTC25m
2026-07-21 SKW4261 - Jul 21, 18:05 UTCJul 21, 19:00 UTC55m
2026-07-21 SKW4261 XWA → MSP Jul 21, 17:55 UTCJul 21, 18:58 UTC1h 3m
2026-07-21 SKW4261 - Jul 21, 15:10 UTCJul 21, 16:15 UTC1h 5m
2026-07-21 SKW4238 - Jul 21, 11:45 UTCJul 21, 12:25 UTC40m
2026-07-21 SKW4264 MSP → ABR Jul 21, 01:30 UTCJul 21, 02:05 UTC35m
2026-07-20 SKW4330 - Jul 20, 20:55 UTCJul 20, 21:45 UTC50m
2026-07-20 SKW4330 GFK → MSP Jul 20, 21:02 UTCJul 20, 21:40 UTC38m
2026-07-20 SKW4330 - Jul 20, 18:30 UTCJul 20, 19:15 UTC45m
2026-07-20 SKW4329 - Jul 20, 16:05 UTCJul 20, 16:55 UTC50m
2026-07-20 SKW4329 - Jul 20, 14:05 UTCJul 20, 14:45 UTC40m
2026-07-20 SKW184C CIU → MSP Jul 20, 11:30 UTCJul 20, 12:40 UTC1h 10m
2026-07-19 SKW145H DTW → CIU Jul 19, 22:25 UTCJul 19, 23:00 UTC35m
2026-07-19 SKW4338 - Jul 19, 14:40 UTCJul 19, 15:15 UTC35m
2026-07-19 SKW4338 - Jul 19, 12:50 UTCJul 19, 13:20 UTC30m
2026-07-19 SKW4244 ESC → DTW Jul 19, 10:25 UTCJul 19, 11:10 UTC45m
2026-07-19 SKW176R SEA → SFO Jul 19, 01:55 UTCJul 19, 02:35 UTC40m
2026-07-19 SKW176R SEA → SFO Jul 19, 01:55 UTCJul 19, 02:47 UTC52m
2026-07-18 SKW4335 - Jul 18, 22:05 UTCJul 18, 22:40 UTC35m
2026-07-18 SKW4335 - Jul 18, 20:10 UTCJul 18, 20:45 UTC35m
2026-07-18 SKW4274 - Jul 18, 16:15 UTCJul 18, 16:50 UTC35m
2026-07-18 SKW4274 - Jul 18, 12:50 UTCJul 18, 13:25 UTC35m
2026-07-18 SKW4244 ESC → DTW Jul 18, 10:20 UTCJul 18, 11:00 UTC40m
2026-07-18 SKW4244 ESC → DTW Jul 18, 10:24 UTCJul 18, 11:00 UTC36m
2026-07-18 SKW176R SEA → SFO Jul 18, 01:45 UTCJul 18, 02:25 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 N712SK page for operator, model, and routing details .

Mode-S A98515 frequently asked

What is Mode-S code A98515?
A98515 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N712SK.
Where is Mode-S A98515 registered?
Mode-S code A98515 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 A98515 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A98515, octal 52302425, decimal 11,109,653.
What flights does A98515 operate?
Mode-S A98515 has broadcast 20 distinct callsigns, including SKW4229, SKW4329, SKW4274, SKW4305, SKW4283.