Apparatus

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sensors Mode-S transponder

A973E0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N708SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A973E0
Octal
52271740
Decimal
11,105,248
Country
US
Tail
N708SK
Type
CRJ7
No current signal · last broadcast 3h ago
Flights observed
344
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A973E0.

Country allocation

The ICAO 24-bit address A973E0 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
SKW6453 SkyWest Airlines 9 2026-04-27
SKW6197 SkyWest Airlines 7 2026-05-31
SKW6444 SkyWest Airlines 6 2026-04-24
SKW6436 SkyWest Airlines 6 2026-04-25
SKW6414 SkyWest Airlines 6 2026-05-15
SKW6399 SkyWest Airlines 6 2026-05-03
SKW6377 SkyWest Airlines 6 2026-05-20
SKW6230 SkyWest Airlines 6 2026-05-26
SKW4994 SkyWest Airlines 6 2026-05-12
SKW6517 SkyWest Airlines 5 2026-05-12
SKW6465 SkyWest Airlines 5 2026-05-25
SKW6456 SkyWest Airlines 5 2026-05-08
SKW6390 SkyWest Airlines 5 2026-04-27
SKW6391 SkyWest Airlines 4 2026-05-27
SKW6384 SkyWest Airlines 4 2026-04-29
SKW6330 SkyWest Airlines 4 2026-05-10
SKW6267 SkyWest Airlines 4 2026-04-26
SKW6239 SkyWest Airlines 4 2026-05-13
SKW5002 SkyWest Airlines 4 2026-06-03
SKW5000 SkyWest Airlines 4 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 SKW5002 ORD → RST Jun 3, 01:30 UTCJun 3, 02:30 UTC1h 0m
2026-06-02 SKW5002 ORD → RST Jun 2, 19:45 UTCJun 2, 21:00 UTC1h 15m
2026-06-02 SKW4963 SJC → LAX Jun 2, 16:55 UTCJun 2, 18:30 UTC1h 35m
2026-06-02 SKW4963 SJC → LAX Jun 2, 16:41 UTCJun 2, 18:24 UTC1h 43m
2026-06-02 SKW4963 SJC → LAX Jun 2, 13:50 UTCJun 2, 15:10 UTC1h 20m
2026-06-02 SKW4907 ORD → CLE Jun 2, 11:10 UTCJun 2, 12:00 UTC50m
2026-06-02 SKW4907 ORD → CLE Jun 2, 11:09 UTCJun 2, 11:54 UTC45m
2026-06-02 SKW4892 DFW → FSM Jun 2, 02:30 UTCJun 2, 03:45 UTC1h 15m
2026-06-02 SKW6368 PHX → ELP Jun 2, 00:35 UTCJun 2, 01:00 UTC25m
2026-06-01 SKW6368 PHX → ELP Jun 1, 23:20 UTCJun 1, 23:45 UTC25m
2026-06-01 SKW6473 ICT → PHX Jun 1, 18:00 UTCJun 1, 20:00 UTC2h 0m
2026-06-01 SKW6473 ICT → PHX Jun 1, 17:56 UTCJun 1, 19:56 UTC2h 0m
2026-06-01 SKW5007 PSC → PHX Jun 1, 15:10 UTCJun 1, 16:45 UTC1h 35m
2026-06-01 SKW6308 IND → ORD Jun 1, 12:35 UTCJun 1, 13:25 UTC50m
2026-06-01 SKW6323 PHX → ICT Jun 1, 02:00 UTCJun 1, 02:50 UTC50m
2026-05-31 SKW6197 LAX → ELP May 31, 22:35 UTCJun 1, 00:05 UTC1h 30m
2026-05-31 SKW6197 LAX → ELP May 31, 22:29 UTCMay 31, 23:55 UTC1h 26m
2026-05-31 SKW6197 LAX → ELP May 31, 20:30 UTCMay 31, 21:40 UTC1h 10m
2026-05-31 SKW4954 GJT → PHX May 31, 17:55 UTCMay 31, 18:55 UTC1h 0m
2026-05-31 SKW4954 GJT → PHX May 31, 16:15 UTCMay 31, 17:05 UTC50m
2026-05-31 SKW4964 BNA → ORD May 31, 13:00 UTCMay 31, 14:25 UTC1h 25m
2026-05-31 SKW4964 BNA → ORD May 31, 12:58 UTCMay 31, 14:12 UTC1h 14m
2026-05-28 SKW6326 MRY → PHX May 28, 02:55 UTCMay 28, 03:50 UTC55m
2026-05-27 SKW6229 MLI → ORD May 27, 23:55 UTCMay 28, 00:35 UTC40m
2026-05-27 SKW6229 MLI → ORD May 27, 22:35 UTCMay 27, 22:55 UTC20m
2026-05-27 SKW6352 ORD → HSV May 27, 19:10 UTCMay 27, 20:05 UTC55m
2026-05-27 SKW6352 ORD → HSV May 27, 19:08 UTCMay 27, 19:53 UTC45m
2026-05-27 SKW6352 ORD → HSV May 27, 17:10 UTCMay 27, 17:55 UTC45m
2026-05-27 SKW6391 TUS → LAX May 27, 13:50 UTCMay 27, 14:25 UTC35m
2026-05-27 SKW6391 TUS → LAX May 27, 12:00 UTCMay 27, 12:35 UTC35m
2026-05-27 SKW6494 ORD → DTW May 27, 10:30 UTCMay 27, 10:55 UTC25m
2026-05-27 SKW6494 ORD → DTW May 27, 10:28 UTCMay 27, 10:53 UTC25m
2026-05-27 SKW6499 ORD → MSN May 27, 04:14 UTCMay 27, 04:39 UTC25m
2026-05-27 SKW6499 ORD → MSN May 27, 04:13 UTCMay 27, 04:39 UTC26m
2026-05-27 SKW4933 DFW → CLL May 27, 00:44 UTCMay 27, 02:04 UTC1h 20m
2026-05-26 SKW4933 DFW → CLL May 26, 22:29 UTCMay 26, 23:35 UTC1h 5m
2026-05-26 SKW4950 PHX → SFO May 26, 20:09 UTCMay 26, 21:04 UTC55m
2026-05-26 SKW4950 PHX → SFO May 26, 18:19 UTCMay 26, 19:10 UTC50m
2026-05-26 SKW6244 ORD → FSD May 26, 15:29 UTCMay 26, 16:20 UTC50m
2026-05-26 SKW6244 ORD → FSD May 26, 13:24 UTCMay 26, 14:20 UTC55m
2026-05-26 SKW4904 PHX → IAH May 26, 09:45 UTCMay 26, 10:29 UTC45m
2026-05-26 SKW4916 LAX → IAH May 26, 04:04 UTCMay 26, 04:39 UTC35m
2026-05-26 SKW4916 LAX → IAH May 26, 04:03 UTCMay 26, 04:46 UTC43m
2026-05-26 SKW6230 DFW → OKC May 26, 02:00 UTCMay 26, 02:49 UTC50m
2026-05-26 SKW6230 DFW → OKC May 26, 00:14 UTCMay 26, 00:54 UTC40m
2026-05-25 SKW4913 PHX → YUM May 25, 21:15 UTCMay 25, 22:34 UTC1h 20m
2026-05-25 SKW4913 PHX → YUM May 25, 21:14 UTCMay 25, 22:34 UTC1h 20m
2026-05-25 SKW4913 PHX → YUM May 25, 19:05 UTCMay 25, 20:09 UTC1h 5m
2026-05-25 SKW5003 BRO → DFW May 25, 15:55 UTCMay 25, 17:30 UTC1h 35m
2026-05-25 SKW5003 BRO → DFW May 25, 15:51 UTCMay 25, 17:26 UTC1h 35m

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 N708SK page for operator, model, and routing details .

Mode-S A973E0 frequently asked

What is Mode-S code A973E0?
A973E0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N708SK.
Where is Mode-S A973E0 registered?
Mode-S code A973E0 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 A973E0 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A973E0, octal 52271740, decimal 11,105,248.
What flights does A973E0 operate?
Mode-S A973E0 has broadcast 20 distinct callsigns, including SKW6453, SKW6197, SKW6444, SKW6436, SKW6414.