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sensors Mode-S transponder

A9CCA5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N730SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A9CCA5
Octal
52346245
Decimal
11,127,973
Country
US
Tail
N730SK
Type
CRJ7
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
796
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S A9CCA5.

Country allocation

The ICAO 24-bit address A9CCA5 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
SKW6446 SkyWest Airlines 13 2026-06-09
SKW6250 - 13 2026-07-12
SKW6245 SkyWest Airlines 12 2026-06-06
SKW6476 SkyWest Airlines 11 2026-07-22
SKW4825 - 11 2026-07-24
SKW6380 - 10 2026-07-16
SKW6230 - 10 2026-07-16
SKW4989 SkyWest Airlines 10 2026-07-25
SKW6450 SkyWest Airlines 8 2026-07-06
SKW6444 SkyWest Airlines 8 2026-06-07
SKW6433 SkyWest Airlines 8 2026-07-24
SKW6399 SkyWest Airlines 8 2026-07-25
SKW6249 SkyWest Airlines 8 2026-07-23
SKW4909 - 8 2026-07-10
SKW6291 - 7 2026-07-12
SKW6274 SkyWest Airlines 7 2026-07-21
SKW6273 SkyWest Airlines 7 2026-07-26
SKW6259 SkyWest Airlines 7 2026-05-23
SKW6232 - 7 2026-07-14
SKW6207 - 7 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW6517 PHX → SBA Jul 26, 20:25 UTCJul 26, 21:10 UTC45m
2026-07-26 SKW6273 HOU → DFW Jul 26, 17:35 UTCJul 26, 19:15 UTC1h 40m
2026-07-26 SKW6225 LAX → SEA Jul 26, 14:10 UTCJul 26, 16:25 UTC2h 15m
2026-07-26 SKW6186 ORD → IAH Jul 26, 02:25 UTCJul 26, 04:25 UTC2h 0m
2026-07-25 SKW6229 MLI → ORD Jul 25, 23:30 UTCJul 26, 00:00 UTC30m
2026-07-25 SKW6229 MLI → ORD Jul 25, 21:40 UTCJul 25, 22:05 UTC25m
2026-07-25 SKW4989 DFW → CVG Jul 25, 18:25 UTCJul 25, 19:30 UTC1h 5m
2026-07-25 SKW4989 DFW → CVG Jul 25, 18:22 UTCJul 25, 19:31 UTC1h 9m
2026-07-25 SKW4989 DFW → CVG Jul 25, 15:50 UTCJul 25, 17:05 UTC1h 15m
2026-07-25 SKW4952 SEA → PHX Jul 25, 12:15 UTCJul 25, 13:30 UTC1h 15m
2026-07-25 SKW4942 DAY → ORD Jul 25, 04:05 UTCJul 25, 05:15 UTC1h 10m
2026-07-25 SKW6399 MKE → ORD Jul 25, 01:05 UTCJul 25, 02:40 UTC1h 35m
2026-07-25 SKW6399 MKE → ORD Jul 25, 01:02 UTCJul 25, 02:07 UTC1h 5m
2026-07-24 SKW6399 MKE → ORD Jul 24, 23:05 UTCJul 25, 00:00 UTC55m
2026-07-24 SKW4825 - Jul 24, 20:35 UTCJul 24, 21:45 UTC1h 10m
2026-07-24 SKW4825 - Jul 24, 19:05 UTCJul 24, 19:40 UTC35m
2026-07-24 SKW5003 BRO → DFW Jul 24, 15:50 UTCJul 24, 17:15 UTC1h 25m
2026-07-24 SKW5003 BRO → DFW Jul 24, 15:53 UTCJul 24, 17:09 UTC1h 16m
2026-07-24 SKW5003 BRO → DFW Jul 24, 13:35 UTCJul 24, 14:40 UTC1h 5m
2026-07-24 SKW6464 HSV → ORD Jul 24, 10:25 UTCJul 24, 11:55 UTC1h 30m
2026-07-24 SKW6426 PHX → SBA Jul 24, 03:50 UTCJul 24, 05:00 UTC1h 10m
2026-07-24 SKW6433 PHX → BFL Jul 24, 00:40 UTCJul 24, 02:35 UTC1h 55m
2026-07-23 SKW6433 PHX → BFL Jul 23, 21:45 UTCJul 23, 23:15 UTC1h 30m
2026-07-23 SKW6249 PHX → GJT Jul 23, 18:40 UTCJul 23, 19:45 UTC1h 5m
2026-07-23 SKW6249 PHX → GJT Jul 23, 18:41 UTCJul 23, 19:26 UTC45m
2026-07-23 SKW6249 PHX → GJT Jul 23, 16:40 UTCJul 23, 17:40 UTC1h 0m
2026-07-23 SKW6493 ORD → RST Jul 23, 13:20 UTCJul 23, 15:00 UTC1h 40m
2026-07-23 SKW6487 DFW → AEX Jul 23, 00:10 UTCJul 23, 01:55 UTC1h 45m
2026-07-23 SKW6487 DFW → AEX Jul 23, 00:05 UTCJul 23, 01:45 UTC1h 40m
2026-07-22 SKW4825 - Jul 22, 20:50 UTCJul 22, 21:35 UTC45m
2026-07-22 SKW4825 ALO → ORD Jul 22, 20:48 UTCJul 22, 21:30 UTC42m
2026-07-22 SKW4825 - Jul 22, 18:55 UTCJul 22, 19:35 UTC40m
2026-07-22 SKW6391 TUS → LAX Jul 22, 14:25 UTCJul 22, 15:00 UTC35m
2026-07-22 SKW6391 TUS → LAX Jul 22, 14:20 UTCJul 22, 14:54 UTC34m
2026-07-22 SKW6391 TUS → LAX Jul 22, 12:25 UTCJul 22, 12:55 UTC30m
2026-07-22 SKW6193 OKC → LAX Jul 22, 03:20 UTCJul 22, 03:45 UTC25m
2026-07-22 SKW6193 OKC → LAX Jul 22, 03:01 UTCJul 22, 03:44 UTC43m
2026-07-22 SKW6476 ORD → COS Jul 22, 00:20 UTCJul 22, 00:30 UTC10m
2026-07-21 SKW6476 ORD → COS Jul 21, 23:55 UTCJul 22, 00:30 UTC35m
2026-07-21 SKW6476 ORD → COS Jul 21, 23:56 UTCJul 22, 00:03 UTC7m
2026-07-21 SKW6476 ORD → COS Jul 21, 22:25 UTCJul 21, 22:45 UTC20m
2026-07-21 SKW6488 ORD → YYZ Jul 21, 16:00 UTCJul 21, 17:10 UTC1h 10m
2026-07-21 SKW6488 ORD → YYZ Jul 21, 13:20 UTCJul 21, 14:25 UTC1h 5m
2026-07-21 SKW4826 - Jul 21, 10:15 UTCJul 21, 11:05 UTC50m
2026-07-21 SKW4824 - Jul 21, 06:10 UTCJul 21, 06:55 UTC45m
2026-07-21 SKW6274 DFW → FSD Jul 21, 02:50 UTCJul 21, 05:10 UTC2h 20m
2026-07-20 SKW6274 DFW → FSD Jul 20, 23:20 UTCJul 21, 00:55 UTC1h 34m
2026-07-20 SKW6407 YYZ → ORD Jul 20, 19:25 UTCJul 20, 20:40 UTC1h 15m
2026-07-20 SKW6407 - Jul 20, 17:15 UTCJul 20, 18:20 UTC1h 5m
2026-07-20 SKW6391 - Jul 20, 14:40 UTCJul 20, 15:10 UTC30m

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 N730SK page for operator, model, and routing details .

Mode-S A9CCA5 frequently asked

What is Mode-S code A9CCA5?
A9CCA5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N730SK.
Where is Mode-S A9CCA5 registered?
Mode-S code A9CCA5 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 A9CCA5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9CCA5, octal 52346245, decimal 11,127,973.
What flights does A9CCA5 operate?
Mode-S A9CCA5 has broadcast 20 distinct callsigns, including SKW6446, SKW6250, SKW6245, SKW6476, SKW4825.