Apparatus

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sensors Mode-S transponder

A987AA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N713EV · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A987AA
Octal
52303652
Decimal
11,110,314
Country
US
Tail
N713EV
Type
CRJ7
No current signal · last broadcast 6h ago
Flights observed
566
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A987AA.

Country allocation

The ICAO 24-bit address A987AA 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
SKW4329 - 31 2026-07-10
SKW4245 - 25 2026-07-08
SKW4283 - 24 2026-07-08
SKW4274 - 24 2026-07-13
SKW4262 - 22 2026-07-07
SKW4229 SkyWest Airlines 19 2026-05-20
SKW4305 - 18 2026-07-11
SKW4252 - 15 2026-07-13
SKW4236 - 15 2026-06-25
SKW4330 - 14 2026-07-11
SKW4231 - 14 2026-07-09
SKW4301 - 13 2026-07-07
SKW4266 - 13 2026-07-01
SKW4232 - 13 2026-07-13
SKW4331 - 12 2026-07-09
SKW4314 - 12 2026-06-29
SKW4303 - 12 2026-07-11
SKW4297 - 12 2026-06-25
SKW4291 - 12 2026-07-11
SKW4242 - 12 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SKW145H - Jul 13, 23:35 UTCJul 14, 00:10 UTC35m
2026-07-13 SKW4252 - Jul 13, 22:05 UTCJul 13, 22:35 UTC30m
2026-07-13 SKW4252 APN → DTW Jul 13, 22:08 UTCJul 13, 22:35 UTC27m
2026-07-13 SKW4232 - Jul 13, 20:25 UTCJul 13, 20:55 UTC30m
2026-07-13 SKW4232 DTW → APN Jul 13, 20:24 UTCJul 13, 21:03 UTC39m
2026-07-13 SKW4274 - Jul 13, 15:20 UTCJul 13, 15:45 UTC25m
2026-07-13 SKW4274 - Jul 13, 13:50 UTCJul 13, 14:15 UTC25m
2026-07-12 SKW4294 - Jul 12, 22:15 UTCJul 12, 23:05 UTC50m
2026-07-12 SKW4270 - Jul 12, 20:30 UTCJul 12, 21:05 UTC35m
2026-07-12 SKW4261 XWA → MSP Jul 12, 18:25 UTCJul 12, 19:30 UTC1h 5m
2026-07-12 SKW4261 - Jul 12, 15:50 UTCJul 12, 16:45 UTC55m
2026-07-12 SKW4238 - Jul 12, 11:50 UTCJul 12, 12:30 UTC40m
2026-07-11 SKW4264 - Jul 11, 23:35 UTCJul 12, 00:15 UTC40m
2026-07-11 SKW4330 - Jul 11, 21:20 UTCJul 11, 22:01 UTC40m
2026-07-11 SKW4330 MSP → GFK Jul 11, 18:35 UTCJul 11, 19:20 UTC45m
2026-07-11 SKW4330 - Jul 11, 18:30 UTCJul 11, 19:20 UTC50m
2026-07-11 SKW4305 - Jul 11, 16:10 UTCJul 11, 16:45 UTC35m
2026-07-11 SKW4305 RHI → MSP Jul 11, 16:09 UTCJul 11, 16:42 UTC33m
2026-07-11 SKW4305 - Jul 11, 14:15 UTCJul 11, 14:45 UTC30m
2026-07-11 SKW4303 - Jul 11, 11:45 UTCJul 11, 12:15 UTC30m
2026-07-11 SKW4291 MSP → BJI Jul 11, 03:08 UTCJul 11, 03:21 UTC13m
2026-07-11 SKW4291 - Jul 11, 02:50 UTCJul 11, 03:15 UTC25m
2026-07-10 SKW4330 - Jul 10, 20:55 UTCJul 10, 21:35 UTC40m
2026-07-10 SKW4330 - Jul 10, 18:20 UTCJul 10, 19:10 UTC50m
2026-07-10 SKW4329 - Jul 10, 16:05 UTCJul 10, 16:50 UTC45m
2026-07-10 SKW4329 GFK → MSP Jul 10, 16:03 UTCJul 10, 16:45 UTC42m
2026-07-10 SKW4329 - Jul 10, 14:15 UTCJul 10, 15:00 UTC45m
2026-07-10 SKW184C - Jul 10, 11:25 UTCJul 10, 12:20 UTC55m
2026-07-10 SKW184C CIU → MSP Jul 10, 11:29 UTCJul 10, 12:19 UTC50m
2026-07-09 SKW145H - Jul 9, 22:20 UTCJul 9, 22:50 UTC30m
2026-07-09 SKW145H DTW → CIU Jul 9, 22:29 UTCJul 9, 23:05 UTC36m
2026-07-09 SKW4231 - Jul 9, 20:55 UTCJul 9, 21:30 UTC35m
2026-07-09 SKW4231 CIU → DTW Jul 9, 20:58 UTCJul 9, 21:39 UTC41m
2026-07-09 SKW4242 - Jul 9, 18:25 UTCJul 9, 19:10 UTC45m
2026-07-09 SKW4329 - Jul 9, 16:00 UTCJul 9, 16:50 UTC50m
2026-07-09 SKW4329 - Jul 9, 14:00 UTCJul 9, 14:50 UTC50m
2026-07-09 SKW4328 - Jul 9, 10:10 UTCJul 9, 10:55 UTC45m
2026-07-09 SKW4332 MSP → GFK Jul 9, 03:05 UTCJul 9, 03:35 UTC30m
2026-07-09 SKW4332 - Jul 9, 02:50 UTCJul 9, 03:35 UTC45m
2026-07-09 SKW4331 - Jul 9, 00:25 UTCJul 9, 01:10 UTC45m
2026-07-09 SKW4331 GFK → MSP Jul 9, 00:24 UTCJul 9, 01:09 UTC45m
2026-07-08 SKW4331 - Jul 8, 22:05 UTCJul 8, 22:45 UTC40m
2026-07-08 SKW4283 - Jul 8, 20:00 UTCJul 8, 20:35 UTC35m
2026-07-08 SKW4283 - Jul 8, 18:20 UTCJul 8, 18:45 UTC25m
2026-07-08 SKW4245 - Jul 8, 16:20 UTCJul 8, 16:50 UTC30m
2026-07-08 SKW4245 INL → MSP Jul 8, 16:17 UTCJul 8, 16:50 UTC33m
2026-07-08 SKW4245 - Jul 8, 14:35 UTCJul 8, 15:05 UTC30m
2026-07-08 SKW4336 - Jul 8, 12:10 UTCJul 8, 12:40 UTC30m
2026-07-07 SKW4301 - Jul 7, 23:10 UTCJul 7, 23:35 UTC25m
2026-07-07 SKW4262 - Jul 7, 20:05 UTCJul 7, 20:45 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 N713EV page for operator, model, and routing details .

Mode-S A987AA frequently asked

What is Mode-S code A987AA?
A987AA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N713EV.
Where is Mode-S A987AA registered?
Mode-S code A987AA 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 A987AA broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A987AA, octal 52303652, decimal 11,110,314.
What flights does A987AA operate?
Mode-S A987AA has broadcast 20 distinct callsigns, including SKW4329, SKW4245, SKW4283, SKW4274, SKW4262.