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 Jul 26, 22:00 UTC
Flights observed
745
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

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
SKW6197 - 13 2026-07-19
SKW6343 SkyWest Airlines 11 2026-07-24
SKW4963 SkyWest Airlines 11 2026-07-20
SKW6390 SkyWest Airlines 10 2026-07-18
SKW6453 SkyWest Airlines 9 2026-04-27
SKW6311 - 9 2026-07-09
SKW5002 - 9 2026-07-20
SKW6398 - 8 2026-07-13
SKW6329 SkyWest Airlines 8 2026-07-26
SKW6313 SkyWest Airlines 8 2026-07-26
SKW6244 - 8 2026-07-03
SKW6456 - 7 2026-06-20
SKW6384 - 7 2026-06-27
SKW6194 - 7 2026-06-30
SKW4969 - 7 2026-07-12
SKW6517 SkyWest Airlines 6 2026-06-08
SKW6488 - 6 2026-06-26
SKW6444 SkyWest Airlines 6 2026-04-24
SKW6436 SkyWest Airlines 6 2026-04-25
SKW6414 SkyWest Airlines 6 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4996 AUS → PHX Jul 26, 21:10 UTCJul 26, 22:00 UTC50m
2026-07-26 SKW4918 DFW → TXK Jul 26, 17:40 UTCJul 26, 19:10 UTC1h 30m
2026-07-26 SKW4918 DFW → TXK Jul 26, 14:15 UTCJul 26, 15:45 UTC1h 30m
2026-07-26 SKW6329 BPT → DFW Jul 26, 11:30 UTCJul 26, 12:20 UTC50m
2026-07-26 SKW6313 DFW → BPT Jul 26, 02:30 UTCJul 26, 03:15 UTC45m
2026-07-26 SKW6313 DFW → BPT Jul 26, 02:28 UTCJul 26, 03:23 UTC55m
2026-07-25 SKW4960 TUL → PHX Jul 25, 23:30 UTCJul 26, 01:00 UTC1h 30m
2026-07-25 SKW4960 TUL → PHX Jul 25, 20:35 UTCJul 25, 21:55 UTC1h 20m
2026-07-25 SKW6189 GRK → DFW Jul 25, 17:29 UTCJul 25, 18:34 UTC1h 5m
2026-07-25 SKW6189 GRK → DFW Jul 25, 15:10 UTCJul 25, 16:05 UTC55m
2026-07-25 SKW6302 ABQ → LAX Jul 25, 11:50 UTCJul 25, 13:15 UTC1h 25m
2026-07-25 SKW6302 ABQ → LAX Jul 25, 11:38 UTCJul 25, 13:09 UTC1h 31m
2026-07-25 SKW4981 PHX → CID Jul 25, 02:45 UTCJul 25, 04:10 UTC1h 25m
2026-07-25 SKW4981 PHX → CID Jul 25, 02:44 UTCJul 25, 04:27 UTC1h 43m
2026-07-25 SKW6344 PHX → SJC Jul 25, 01:00 UTCJul 25, 01:40 UTC40m
2026-07-24 SKW6344 PHX → SJC Jul 24, 23:20 UTCJul 24, 23:45 UTC25m
2026-07-24 SKW6238 LAX → SFO Jul 24, 21:00 UTCJul 24, 22:10 UTC1h 10m
2026-07-24 SKW6238 LAX → SFO Jul 24, 18:45 UTCJul 24, 19:50 UTC1h 5m
2026-07-24 SKW6343 DAY → ORD Jul 24, 16:45 UTCJul 24, 17:25 UTC40m
2026-07-24 SKW6343 DAY → ORD Jul 24, 16:12 UTCJul 24, 17:22 UTC1h 10m
2026-07-24 SKW6343 DAY → ORD Jul 24, 14:55 UTCJul 24, 15:25 UTC30m
2026-07-24 SKW6329 BPT → DFW Jul 24, 11:10 UTCJul 24, 12:00 UTC50m
2026-07-24 SKW6313 DFW → BPT Jul 24, 02:45 UTCJul 24, 03:25 UTC40m
2026-07-24 SKW6313 DFW → BPT Jul 24, 02:42 UTCJul 24, 03:28 UTC46m
2026-07-23 SKW6295 PHX → SFO Jul 23, 21:15 UTCJul 24, 00:55 UTC3h 40m
2026-07-23 SKW6288 MHK → ORD Jul 23, 18:20 UTCJul 23, 19:25 UTC1h 5m
2026-07-23 SKW6288 MHK → ORD Jul 23, 18:19 UTCJul 23, 19:20 UTC1h 1m
2026-07-23 SKW6288 MHK → ORD Jul 23, 16:05 UTCJul 23, 17:05 UTC1h 0m
2026-07-23 SKW6335 SBN → DFW Jul 23, 12:15 UTCJul 23, 14:10 UTC1h 55m
2026-07-23 SKW6305 DFW → SBN Jul 23, 00:45 UTCJul 23, 02:30 UTC1h 45m
2026-07-22 SKW6337 PHX → SEA Jul 22, 22:55 UTCJul 22, 23:30 UTC35m
2026-07-22 SKW6337 PHX → SEA Jul 22, 22:37 UTCJul 22, 23:25 UTC48m
2026-07-22 SKW6337 PHX → SEA Jul 22, 21:15 UTCJul 22, 21:50 UTC35m
2026-07-22 SKW6296 LAX → SFO Jul 22, 16:30 UTCJul 22, 17:35 UTC1h 5m
2026-07-22 SKW6296 LAX → SFO Jul 22, 16:14 UTCJul 22, 17:29 UTC1h 15m
2026-07-22 SKW6296 LAX → SFO Jul 22, 14:00 UTCJul 22, 15:00 UTC1h 0m
2026-07-21 SKW6233 STL → ORD Jul 21, 22:40 UTCJul 22, 00:30 UTC1h 50m
2026-07-21 SKW6233 STL → ORD Jul 21, 19:55 UTCJul 21, 21:50 UTC1h 55m
2026-07-21 SKW6388 ORD → TUL Jul 21, 16:55 UTCJul 21, 18:35 UTC1h 40m
2026-07-21 SKW6388 ORD → TUL Jul 21, 14:00 UTCJul 21, 15:20 UTC1h 20m
2026-07-21 SKW6511 PHX → STS Jul 21, 11:35 UTCJul 21, 12:20 UTC45m
2026-07-21 SKW6284 LAX → SFO Jul 21, 03:50 UTCJul 21, 04:25 UTC35m
2026-07-21 SKW6342 - Jul 21, 00:55 UTCJul 21, 02:00 UTC1h 5m
2026-07-21 SKW6342 BTR → DFW Jul 21, 00:53 UTCJul 21, 01:57 UTC1h 4m
2026-07-20 SKW6342 DFW → BTR Jul 20, 23:15 UTCJul 21, 00:10 UTC54m
2026-07-20 SKW5002 - Jul 20, 21:25 UTCJul 20, 22:15 UTC50m
2026-07-20 SKW5002 - Jul 20, 19:40 UTCJul 20, 20:20 UTC40m
2026-07-20 SKW4963 SJC → LAX Jul 20, 16:35 UTCJul 20, 18:10 UTC1h 35m
2026-07-20 SKW4963 SJC → LAX Jul 20, 16:27 UTCJul 20, 18:07 UTC1h 40m
2026-07-20 SKW4963 SJC → LAX Jul 20, 13:40 UTCJul 20, 14:55 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 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 Jul 26, 22:00 UTC.
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 SKW6197, SKW6343, SKW4963, SKW6390, SKW6453.