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sensors Mode-S transponder

A9D413

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N732SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A9D413
Octal
52352023
Decimal
11,129,875
Country
US
Tail
N732SK
Type
CRJ7
No current signal · last broadcast Jul 23, 15:40 UTC
Flights observed
645
Distinct callsigns
20
Country
US
Last broadcast
Jul 23, 15:40 UTC

Last known position

Most recent position reported by Mode-S A9D413.

Country allocation

The ICAO 24-bit address A9D413 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
SKW6363 - 12 2026-06-16
SKW6439 - 11 2026-06-21
SKW6218 SkyWest Airlines 11 2026-07-21
SKW6189 - 11 2026-07-15
SKW6440 SkyWest Airlines 10 2026-06-25
SKW6355 - 10 2026-06-29
SKW6232 SkyWest Airlines 9 2026-06-11
SKW6376 - 8 2026-07-17
SKW6321 SkyWest Airlines 8 2026-05-23
SKW6200 SkyWest Airlines 8 2026-06-25
SKW4973 SkyWest Airlines 8 2026-07-20
SKW6352 - 7 2026-07-20
SKW6291 - 7 2026-06-26
SKW6193 - 7 2026-06-23
SKW6348 - 6 2026-07-16
SKW6298 - 6 2026-07-18
SKW6251 - 6 2026-06-25
SKW4986 - 6 2026-07-12
SKW4949 - 6 2026-06-26
SKW4943 - 6 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 SKW6225 LAX → SEA Jul 23, 13:35 UTCJul 23, 15:40 UTC2h 5m
2026-07-23 SKW6225 LAX → SEA Jul 23, 13:35 UTCJul 23, 15:29 UTC1h 54m
2026-07-23 SKW6186 ORD → IAH Jul 23, 02:05 UTCJul 23, 04:20 UTC2h 15m
2026-07-23 SKW6476 ORD → COS Jul 23, 00:10 UTCJul 23, 00:40 UTC30m
2026-07-22 SKW6476 ORD → COS Jul 22, 22:45 UTCJul 22, 23:15 UTC30m
2026-07-22 SKW6379 ORD → OKC Jul 22, 19:15 UTCJul 22, 20:05 UTC50m
2026-07-22 SKW6379 ORD → OKC Jul 22, 19:05 UTCJul 22, 19:52 UTC47m
2026-07-22 SKW6379 ORD → OKC Jul 22, 17:25 UTCJul 22, 18:00 UTC35m
2026-07-21 SKW6218 DTW → ORD Jul 21, 00:25 UTCJul 21, 02:20 UTC1h 55m
2026-07-21 SKW6218 DTW → ORD Jul 21, 00:21 UTCJul 21, 02:16 UTC1h 55m
2026-07-20 SKW6218 DTW → ORD Jul 20, 21:15 UTCJul 20, 22:55 UTC1h 40m
2026-07-20 SKW6352 STL → ORD Jul 20, 18:40 UTCJul 20, 19:50 UTC1h 10m
2026-07-20 SKW6352 - Jul 20, 16:45 UTCJul 20, 17:30 UTC45m
2026-07-20 SKW6263 - Jul 20, 14:05 UTCJul 20, 14:35 UTC30m
2026-07-20 SKW6263 MKE → ORD Jul 20, 14:05 UTCJul 20, 14:28 UTC23m
2026-07-20 SKW6263 - Jul 20, 12:40 UTCJul 20, 13:05 UTC25m
2026-07-20 SKW4976 ORD → DTW Jul 20, 09:45 UTCJul 20, 10:40 UTC55m
2026-07-20 SKW6498 ORD → LEX Jul 20, 03:25 UTCJul 20, 04:15 UTC50m
2026-07-20 SKW4973 GGG → DFW Jul 20, 00:15 UTCJul 20, 00:45 UTC30m
2026-07-20 SKW4973 GGG → DFW Jul 20, 00:16 UTCJul 20, 01:08 UTC52m
2026-07-19 SKW4973 GGG → DFW Jul 19, 22:30 UTCJul 19, 23:25 UTC55m
2026-07-19 SKW6519 PHX → SJC Jul 19, 19:00 UTCJul 19, 20:40 UTC1h 40m
2026-07-19 SKW6277 PHX → OKC Jul 19, 16:15 UTCJul 19, 18:10 UTC1h 55m
2026-07-19 SKW6275 - Jul 19, 13:40 UTCJul 19, 14:55 UTC1h 15m
2026-07-19 SKW6317 PHX → FAT Jul 19, 00:50 UTCJul 19, 01:55 UTC1h 5m
2026-07-18 SKW6311 PVU → PHX Jul 18, 22:30 UTCJul 18, 23:45 UTC1h 15m
2026-07-18 SKW6311 - Jul 18, 20:15 UTCJul 18, 21:30 UTC1h 15m
2026-07-18 SKW6239 SBP → PHX Jul 18, 17:35 UTCJul 18, 18:05 UTC30m
2026-07-18 SKW6239 SBP → PHX Jul 18, 16:10 UTCJul 18, 16:30 UTC20m
2026-07-18 SKW6505 YUM → PHX Jul 18, 13:57 UTCJul 18, 14:27 UTC30m
2026-07-18 SKW6509 - Jul 18, 03:20 UTCJul 18, 03:45 UTC25m
2026-07-18 SKW6509 PHX → YUM Jul 18, 03:19 UTCJul 18, 03:50 UTC31m
2026-07-18 SKW6298 - Jul 18, 00:55 UTCJul 18, 01:54 UTC1h 0m
2026-07-18 SKW6298 SAF → PHX Jul 18, 00:54 UTCJul 18, 01:53 UTC59m
2026-07-17 SKW6513 - Jul 17, 22:25 UTCJul 18, 00:00 UTC1h 35m
2026-07-17 SKW6513 LAX → SAF Jul 17, 22:30 UTCJul 18, 00:03 UTC1h 33m
2026-07-17 SKW6376 - Jul 17, 20:25 UTCJul 17, 21:30 UTC1h 5m
2026-07-17 SKW6376 TUS → LAX Jul 17, 20:08 UTCJul 17, 21:22 UTC1h 14m
2026-07-17 SKW6376 - Jul 17, 18:10 UTCJul 17, 19:20 UTC1h 10m
2026-07-17 SKW4896 ASE → ORD Jul 17, 14:15 UTCJul 17, 14:44 UTC30m
2026-07-17 SKW4896 ASE → ORD Jul 17, 14:13 UTCJul 17, 16:36 UTC2h 23m
2026-07-17 SKW4920 ORD → STL Jul 17, 04:10 UTCJul 17, 06:15 UTC2h 5m
2026-07-17 SKW4920 ORD → STL Jul 17, 04:09 UTCJul 17, 06:10 UTC2h 1m
2026-07-17 SKW6387 - Jul 17, 01:29 UTCJul 17, 02:59 UTC1h 30m
2026-07-16 SKW6387 ASE → LAX Jul 16, 23:03 UTCJul 17, 02:50 UTC3h 47m
2026-07-16 SKW6387 - Jul 16, 20:05 UTCJul 16, 21:45 UTC1h 40m
2026-07-16 SKW6348 - Jul 16, 17:40 UTCJul 16, 18:44 UTC1h 5m
2026-07-16 SKW6348 SMF → LAX Jul 16, 17:20 UTCJul 16, 18:44 UTC1h 24m
2026-07-16 SKW6348 - Jul 16, 15:25 UTCJul 16, 16:25 UTC1h 0m
2026-07-16 SKW4910 - Jul 16, 12:40 UTCJul 16, 13:54 UTC1h 15m

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 N732SK page for operator, model, and routing details .

Mode-S A9D413 frequently asked

What is Mode-S code A9D413?
A9D413 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N732SK.
Where is Mode-S A9D413 registered?
Mode-S code A9D413 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 A9D413 broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 15:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9D413, octal 52352023, decimal 11,129,875.
What flights does A9D413 operate?
Mode-S A9D413 has broadcast 20 distinct callsigns, including SKW6363, SKW6439, SKW6218, SKW6189, SKW6440.