Apparatus

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sensors Mode-S transponder

AA2A7F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N754SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
AA2A7F
Octal
52425177
Decimal
11,151,999
Country
US
Tail
N754SK
Type
CRJ7
Transponder active on ground
Flights observed
780
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S AA2A7F.

Country allocation

The ICAO 24-bit address AA2A7F 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
SKW6228 - 14 2026-06-15
SKW6465 - 11 2026-07-07
SKW6363 - 11 2026-07-08
SKW6232 SkyWest Airlines 11 2026-07-26
SKW6221 SkyWest Airlines 11 2026-05-08
SKW6373 SkyWest Airlines 10 2026-06-27
SKW6273 - 10 2026-07-04
SKW6244 - 10 2026-07-09
SKW4973 - 9 2026-06-20
SKW4955 - 9 2026-06-19
SKW4942 - 9 2026-06-18
SKW4904 - 9 2026-06-20
SKW6285 SkyWest Airlines 8 2026-05-06
SKW4949 - 8 2026-07-08
SKW4913 - 8 2026-07-07
SKW6452 SkyWest Airlines 7 2026-04-24
SKW6420 SkyWest Airlines 7 2026-05-04
SKW6324 - 7 2026-06-24
SKW6302 SkyWest Airlines 7 2026-06-11
SKW6299 SkyWest Airlines 7 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW6407 BFL → PHX Jul 26, 21:35 UTCJul 26, 21:45 UTC10m
2026-07-26 SKW6407 BFL → PHX Jul 26, 19:15 UTCJul 26, 20:20 UTC1h 5m
2026-07-26 SKW6232 SMF → PHX Jul 26, 15:35 UTCJul 26, 16:30 UTC55m
2026-07-26 SKW6232 SMF → PHX Jul 26, 15:30 UTCJul 26, 16:03 UTC33m
2026-07-26 SKW6232 SMF → PHX Jul 26, 14:15 UTCJul 26, 14:40 UTC25m
2026-07-26 SKW6216 GUC → DFW Jul 26, 11:15 UTCJul 26, 12:35 UTC1h 20m
2026-07-26 SKW5001 SPI → ORD Jul 26, 01:00 UTCJul 26, 02:00 UTC1h 0m
2026-07-26 SKW5001 SPI → ORD Jul 26, 00:55 UTCJul 26, 01:56 UTC1h 1m
2026-07-25 SKW6411 SFO → LAX Jul 25, 21:30 UTCJul 25, 23:50 UTC2h 20m
2026-07-25 SKW6417 DFW → ICT Jul 25, 17:00 UTCJul 25, 19:20 UTC2h 20m
2026-07-25 SKW6417 DFW → ICT Jul 25, 16:58 UTCJul 25, 19:45 UTC2h 47m
2026-07-25 SKW4964 BNA → ORD Jul 25, 13:25 UTCJul 25, 14:35 UTC1h 10m
2026-07-25 SKW4964 BNA → ORD Jul 25, 13:23 UTCJul 25, 14:45 UTC1h 22m
2026-07-25 SKW6326 MRY → PHX Jul 25, 01:05 UTCJul 25, 02:05 UTC1h 0m
2026-07-25 SKW6326 MRY → PHX Jul 25, 01:07 UTCJul 25, 02:01 UTC54m
2026-07-24 SKW4990 SBP → PHX Jul 24, 22:15 UTCJul 24, 23:24 UTC1h 9m
2026-07-24 SKW4990 SBP → PHX Jul 24, 22:20 UTCJul 24, 23:25 UTC1h 5m
2026-07-24 SKW4990 SBP → PHX Jul 24, 19:50 UTCJul 24, 21:05 UTC1h 15m
2026-07-24 SKW4989 DFW → CVG Jul 24, 17:15 UTCJul 24, 18:25 UTC1h 10m
2026-07-24 SKW4989 DFW → CVG Jul 24, 15:00 UTCJul 24, 16:15 UTC1h 15m
2026-07-24 SKW6338 PHX → TUL Jul 24, 11:00 UTCJul 24, 11:45 UTC45m
2026-07-24 SKW6396 BNA → ORD Jul 24, 05:00 UTCJul 24, 05:50 UTC50m
2026-07-24 SKW6396 BNA → ORD Jul 24, 04:57 UTCJul 24, 05:49 UTC52m
2026-07-24 SKW6274 DFW → FSD Jul 24, 02:10 UTCJul 24, 03:45 UTC1h 35m
2026-07-23 SKW6274 DFW → FSD Jul 23, 23:35 UTCJul 24, 01:10 UTC1h 35m
2026-07-23 SKW6519 PHX → SJC Jul 23, 19:15 UTCJul 23, 21:00 UTC1h 45m
2026-07-23 SKW6519 PHX → SJC Jul 23, 18:59 UTCJul 23, 20:38 UTC1h 39m
2026-07-23 SKW6277 - Jul 23, 16:20 UTCJul 23, 18:10 UTC1h 50m
2026-07-23 SKW6406 PSP → PHX Jul 23, 14:05 UTCJul 23, 14:45 UTC40m
2026-07-23 SKW6406 PSP → PHX Jul 23, 13:40 UTCJul 23, 14:43 UTC1h 3m
2026-07-23 SKW4922 SLC → PHX Jul 23, 05:35 UTCJul 23, 06:10 UTC35m
2026-07-23 SKW4922 SLC → PHX Jul 23, 05:30 UTCJul 23, 06:17 UTC47m
2026-07-23 SKW6354 ORD → PVD Jul 23, 00:40 UTCJul 23, 02:10 UTC1h 30m
2026-07-22 SKW6354 ORD → PVD Jul 22, 21:00 UTCJul 22, 22:35 UTC1h 35m
2026-07-22 SKW6383 - Jul 22, 19:00 UTCJul 22, 19:30 UTC30m
2026-07-22 SKW6383 YUM → PHX Jul 22, 18:53 UTCJul 22, 19:29 UTC36m
2026-07-22 SKW6383 - Jul 22, 17:35 UTCJul 22, 17:55 UTC20m
2026-07-22 SKW6431 GJT → PHX Jul 22, 14:40 UTCJul 22, 15:45 UTC1h 5m
2026-07-22 SKW6431 GJT → PHX Jul 22, 14:45 UTCJul 22, 15:47 UTC1h 2m
2026-07-22 SKW6318 PHX → GJT Jul 22, 05:06 UTCJul 22, 06:15 UTC1h 9m
2026-07-22 SKW6318 PHX → GJT Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-22 SKW4994 SBN → DFW Jul 22, 01:45 UTCJul 22, 02:55 UTC1h 10m
2026-07-21 SKW4994 SBN → DFW Jul 21, 23:35 UTCJul 22, 00:40 UTC1h 5m
2026-07-21 SKW6473 ICT → PHX Jul 21, 18:10 UTCJul 21, 20:05 UTC1h 55m
2026-07-21 SKW5007 PSC → PHX Jul 21, 15:25 UTCJul 21, 15:45 UTC20m
2026-07-21 SKW5007 PSC → PHX Jul 21, 15:20 UTCJul 21, 16:45 UTC1h 25m
2026-07-21 SKW4964 BNA → ORD Jul 21, 12:15 UTCJul 21, 13:45 UTC1h 30m
2026-07-21 SKW6326 MRY → PHX Jul 21, 01:15 UTCJul 21, 02:25 UTC1h 10m
2026-07-20 SKW6229 - Jul 20, 22:55 UTCJul 20, 23:25 UTC30m
2026-07-20 SKW6229 FWA → ORD Jul 20, 22:49 UTCJul 20, 23:24 UTC35m

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 N754SK page for operator, model, and routing details .

Mode-S AA2A7F frequently asked

What is Mode-S code AA2A7F?
AA2A7F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N754SK.
Where is Mode-S AA2A7F registered?
Mode-S code AA2A7F 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 AA2A7F broadcasting right now?
Mode-S AA2A7F is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA2A7F, octal 52425177, decimal 11,151,999.
What flights does AA2A7F operate?
Mode-S AA2A7F has broadcast 20 distinct callsigns, including SKW6228, SKW6465, SKW6363, SKW6232, SKW6221.