Apparatus

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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 39m ago
Flights observed
568
Distinct callsigns
20
Country
US
Last broadcast
39m ago

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 - 22 2026-06-30
SKW4283 - 22 2026-07-12
SKW4266 - 22 2026-07-12
SKW4245 - 22 2026-07-01
SKW4305 - 21 2026-07-13
SKW4274 - 18 2026-07-05
SKW4301 - 16 2026-07-11
SKW4290 - 16 2026-07-07
SKW4288 - 16 2026-07-07
SKW4270 - 16 2026-07-04
SKW4238 - 16 2026-07-02
SKW4236 - 16 2026-07-02
SKW4336 - 15 2026-07-12
SKW4330 - 15 2026-07-14
SKW4284 - 15 2026-07-13
SKW4262 - 14 2026-07-11
SKW4239 - 13 2026-07-10
SKW4294 - 12 2026-07-04
SKW4335 - 11 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW4330 - Jul 14, 18:20 UTCJul 14, 19:05 UTC45m
2026-07-14 SKW4229 - Jul 14, 16:00 UTCJul 14, 16:35 UTC35m
2026-07-14 SKW4229 - Jul 14, 14:30 UTCJul 14, 14:50 UTC20m
2026-07-14 SKW4298 - Jul 14, 11:50 UTCJul 14, 12:25 UTC35m
2026-07-13 SKW4299 - Jul 13, 23:15 UTCJul 13, 23:40 UTC25m
2026-07-13 SKW4284 XWA → MSP Jul 13, 20:56 UTCJul 13, 21:59 UTC1h 3m
2026-07-13 SKW4284 MSP → MSP Jul 13, 18:15 UTCJul 13, 22:00 UTC3h 45m
2026-07-13 SKW4305 - Jul 13, 16:00 UTCJul 13, 16:35 UTC35m
2026-07-13 SKW4305 - Jul 13, 14:30 UTCJul 13, 15:00 UTC30m
2026-07-13 SKW4292 - Jul 13, 13:00 UTCJul 13, 13:35 UTC35m
2026-07-13 SKW4233 - Jul 13, 01:15 UTCJul 13, 01:45 UTC30m
2026-07-12 SKW4266 - Jul 12, 23:45 UTCJul 13, 00:15 UTC30m
2026-07-12 SKW4266 - Jul 12, 22:10 UTCJul 12, 22:40 UTC30m
2026-07-12 SKW4283 - Jul 12, 19:50 UTCJul 12, 20:25 UTC35m
2026-07-12 SKW4283 - Jul 12, 18:10 UTCJul 12, 18:40 UTC30m
2026-07-12 SKW4305 - Jul 12, 16:01 UTCJul 12, 16:30 UTC30m
2026-07-12 SKW4305 - Jul 12, 14:25 UTCJul 12, 14:55 UTC30m
2026-07-12 SKW4336 - Jul 12, 12:01 UTCJul 12, 12:25 UTC25m
2026-07-11 SKW4301 MSP → BRD Jul 11, 23:20 UTCJul 11, 23:34 UTC14m
2026-07-11 SKW4301 - Jul 11, 23:05 UTCJul 11, 23:15 UTC10m
2026-07-11 SKW4262 - Jul 11, 20:05 UTCJul 11, 20:50 UTC45m
2026-07-11 SKW4262 - Jul 11, 18:10 UTCJul 11, 18:45 UTC35m
2026-07-11 SKW4273 - Jul 11, 16:15 UTCJul 11, 16:40 UTC25m
2026-07-11 SKW4273 BRD → MSP Jul 11, 16:10 UTCJul 11, 16:39 UTC29m
2026-07-11 SKW4273 - Jul 11, 14:25 UTCJul 11, 14:50 UTC25m
2026-07-11 SKW184C - Jul 11, 11:25 UTCJul 11, 12:20 UTC55m
2026-07-11 SKW184C CIU → MSP Jul 11, 11:26 UTCJul 11, 12:20 UTC54m
2026-07-10 SKW145H - Jul 10, 22:30 UTCJul 10, 23:00 UTC30m
2026-07-10 SKW4231 CIU → DTW Jul 10, 20:33 UTCJul 10, 21:10 UTC37m
2026-07-10 SKW4242 - Jul 10, 18:25 UTCJul 10, 19:10 UTC45m
2026-07-10 SKW4239 - Jul 10, 16:10 UTCJul 10, 17:05 UTC55m
2026-07-10 SKW4239 - Jul 10, 14:20 UTCJul 10, 15:00 UTC40m
2026-07-10 SKW4328 - Jul 10, 10:10 UTCJul 10, 10:55 UTC45m
2026-07-10 SKW4332 - Jul 10, 03:00 UTCJul 10, 03:50 UTC50m
2026-07-10 SKW4331 - Jul 10, 00:20 UTCJul 10, 01:05 UTC45m
2026-07-09 SKW4331 - Jul 9, 22:00 UTCJul 9, 22:45 UTC45m
2026-07-09 SKW4283 - Jul 9, 20:00 UTCJul 9, 20:30 UTC30m
2026-07-09 SKW4283 - Jul 9, 18:30 UTCJul 9, 18:55 UTC25m
2026-07-09 SKW4305 - Jul 9, 16:00 UTCJul 9, 16:35 UTC35m
2026-07-09 SKW4305 RHI → MSP Jul 9, 16:09 UTCJul 9, 16:35 UTC26m
2026-07-09 SKW4305 MSP → PRW Jul 9, 14:25 UTCJul 9, 14:50 UTC25m
2026-07-09 SKW4298 - Jul 9, 12:00 UTCJul 9, 12:40 UTC40m
2026-07-09 SKW4298 ATY → MSP Jul 9, 11:44 UTCJul 9, 12:25 UTC41m
2026-07-08 SKW4299 - Jul 8, 23:30 UTCJul 8, 23:55 UTC25m
2026-07-08 SKW4284 XWA → MSP Jul 8, 21:02 UTCJul 8, 22:14 UTC1h 12m
2026-07-08 SKW4284 - Jul 8, 18:25 UTCJul 8, 19:25 UTC1h 0m
2026-07-08 SKW4273 - Jul 8, 16:10 UTCJul 8, 16:40 UTC30m
2026-07-08 SKW4273 BRD → MSP Jul 8, 16:10 UTCJul 8, 16:35 UTC25m
2026-07-08 SKW4273 - Jul 8, 14:10 UTCJul 8, 14:40 UTC30m
2026-07-08 SKW4292 - Jul 8, 11:45 UTCJul 8, 12:35 UTC50m

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 39m ago.
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, SKW4283, SKW4266, SKW4245.