Apparatus

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sensors Mode-S transponder

ACD135

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N925EV · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
ACD135
Octal
53150465
Decimal
11,325,749
Country
US
Tail
N925EV
Type
CRJ2
No current signal · last broadcast Jul 26, 19:35 UTC
Flights observed
604
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:35 UTC

Last known position

Most recent position reported by Mode-S ACD135.

Country allocation

The ICAO 24-bit address ACD135 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
SKW5737 SkyWest Airlines 15 2026-05-08
SKW5566 - 15 2026-06-21
SKW4739 SkyWest Airlines 14 2026-06-01
SKW5383 SkyWest Airlines 11 2026-04-29
SKW5248 SkyWest Airlines 11 2026-05-07
SKW5220 SkyWest Airlines 11 2026-05-07
SKW4729 SkyWest Airlines 10 2026-05-06
SKW5997 SkyWest Airlines 9 2026-05-07
SKW5961 SkyWest Airlines 9 2026-05-07
SKW5796 SkyWest Airlines 9 2026-05-07
SKW5627 SkyWest Airlines 9 2026-05-06
SKW5460 SkyWest Airlines 9 2026-05-07
SKW5323 SkyWest Airlines 9 2026-05-07
SKW4769 SkyWest Airlines 9 2026-04-29
SKW5539 SkyWest Airlines 7 2026-05-07
SKW5958 SkyWest Airlines 6 2026-05-08
SKW5953 - 6 2026-06-21
SKW519Y SkyWest Airlines 6 2026-07-25
SKW5141 SkyWest Airlines 6 2026-07-20
SKW4784 - 6 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5691 SFO → BUR Jul 26, 18:10 UTCJul 26, 19:35 UTC1h 25m
2026-07-26 SKW5981 ORD → MSN Jul 26, 15:10 UTCJul 26, 15:35 UTC25m
2026-07-25 SKW4630 BFL → SFO Jul 25, 22:00 UTCJul 25, 22:25 UTC25m
2026-07-25 SKW4752 ORD → ROA Jul 25, 19:35 UTCJul 25, 20:45 UTC1h 10m
2026-07-25 SKW4752 ORD → ROA Jul 25, 19:30 UTCJul 25, 20:19 UTC49m
2026-07-25 SKW519Y ORD → CAK Jul 25, 16:30 UTCJul 25, 17:25 UTC55m
2026-07-24 SKW5448 - Jul 24, 15:40 UTCJul 24, 17:00 UTC1h 20m
2026-07-24 SKW4789 MSO → SFO Jul 24, 02:55 UTCJul 24, 04:25 UTC1h 30m
2026-07-23 SKW4681 DEN → LEX Jul 23, 23:55 UTCJul 24, 00:40 UTC45m
2026-07-23 SKW5907 ORD → MLI Jul 23, 22:07 UTCJul 23, 22:20 UTC13m
2026-07-23 SKW4752 ORD → ROA Jul 23, 18:20 UTCJul 23, 19:20 UTC1h 0m
2026-07-23 SKW519Y ORD → CAK Jul 23, 16:35 UTCJul 23, 17:35 UTC1h 0m
2026-07-23 SKW4794 SBN → ORD Jul 23, 13:25 UTCJul 23, 14:05 UTC40m
2026-07-23 SKW5499 PSP → SFO Jul 23, 01:32 UTCJul 23, 01:43 UTC11m
2026-07-23 SKW5499 PSP → SFO Jul 23, 01:25 UTCJul 23, 01:45 UTC20m
2026-07-22 SKW4698 CVG → ORD Jul 22, 22:10 UTCJul 22, 23:30 UTC1h 20m
2026-07-22 SKW5563 BIH → SFO Jul 22, 20:05 UTCJul 22, 21:00 UTC55m
2026-07-22 SKW5448 - Jul 22, 15:00 UTCJul 22, 16:15 UTC1h 15m
2026-07-22 SKW4789 MSO → SFO Jul 22, 03:10 UTCJul 22, 04:50 UTC1h 40m
2026-07-21 SKW6013 MKE → ORD Jul 21, 23:35 UTCJul 22, 01:10 UTC1h 35m
2026-07-21 SKW503C ORD → DLH Jul 21, 21:15 UTCJul 21, 22:10 UTC55m
2026-07-21 SKW503C ORD → DLH Jul 21, 21:19 UTCJul 21, 22:19 UTC1h 0m
2026-07-21 SKW4747 ORD → XNA Jul 21, 20:00 UTCJul 21, 20:05 UTC5m
2026-07-21 SKW4747 ORD → XNA Jul 21, 19:15 UTCJul 21, 20:05 UTC50m
2026-07-21 SKW4747 ORD → XNA Jul 21, 19:06 UTCJul 21, 19:41 UTC35m
2026-07-21 SKW727R ORD → DAY Jul 21, 17:35 UTCJul 21, 18:20 UTC45m
2026-07-21 SKW5213 CAK → ORD Jul 21, 14:18 UTCJul 21, 14:58 UTC40m
2026-07-21 SKW5213 CAK → ORD Jul 21, 14:05 UTCJul 21, 15:10 UTC1h 5m
2026-07-20 SKW476T ORD → CAK Jul 20, 23:25 UTCJul 21, 00:25 UTC59m
2026-07-20 SKW5141 DEN → SGU Jul 20, 19:45 UTCJul 20, 20:55 UTC1h 10m
2026-07-20 SKW357K - Jul 20, 17:45 UTCJul 20, 18:30 UTC45m
2026-07-20 SKW357K ORD → PLN Jul 20, 17:58 UTCJul 20, 18:38 UTC40m
2026-07-20 SKW5807 PIA → ORD Jul 20, 15:45 UTCJul 20, 16:15 UTC30m
2026-07-20 SKW5807 PIA → ORD Jul 20, 15:42 UTCJul 20, 16:14 UTC32m
2026-07-20 SKW5949 - Jul 20, 14:15 UTCJul 20, 14:40 UTC25m
2026-07-20 SKW5949 ORD → PIA Jul 20, 14:19 UTCJul 20, 14:41 UTC22m
2026-07-20 SKW5801 - Jul 20, 11:30 UTCJul 20, 12:40 UTC1h 10m
2026-07-20 SKW5801 CRW → ORD Jul 20, 11:40 UTCJul 20, 12:37 UTC57m
2026-07-19 SKW4784 ORD → CRW Jul 19, 23:35 UTCJul 20, 00:45 UTC1h 10m
2026-07-19 SKW5436 TYS → ORD Jul 19, 21:10 UTCJul 19, 21:50 UTC40m
2026-07-19 SKW393H - Jul 19, 19:50 UTCJul 19, 20:15 UTC25m
2026-07-19 SKW5448 - Jul 19, 15:20 UTCJul 19, 16:40 UTC1h 20m
2026-07-19 SKW4789 ORD → FAR Jul 19, 05:05 UTCJul 19, 06:30 UTC1h 25m
2026-07-18 SKW6077 - Jul 18, 23:45 UTCJul 19, 00:45 UTC1h 0m
2026-07-18 SKW546J ORD → CIU Jul 18, 20:19 UTCJul 18, 20:56 UTC37m
2026-07-18 SKW546J - Jul 18, 20:00 UTCJul 18, 20:45 UTC45m
2026-07-18 SKW5402 - Jul 18, 14:25 UTCJul 18, 15:00 UTC35m
2026-07-18 SKW5581 - Jul 18, 11:15 UTCJul 18, 11:35 UTC20m
2026-07-16 SKW5526 - Jul 16, 16:05 UTCJul 16, 17:14 UTC1h 10m
2026-07-16 SKW5526 CRW → ORD Jul 16, 15:43 UTCJul 16, 17:01 UTC1h 18m

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 N925EV page for operator, model, and routing details .

Mode-S ACD135 frequently asked

What is Mode-S code ACD135?
ACD135 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N925EV.
Where is Mode-S ACD135 registered?
Mode-S code ACD135 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 ACD135 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACD135, octal 53150465, decimal 11,325,749.
What flights does ACD135 operate?
Mode-S ACD135 has broadcast 20 distinct callsigns, including SKW5737, SKW5566, SKW4739, SKW5383, SKW5248.