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 2h ago
Flights observed
542
Distinct callsigns
20
Country
US
Last broadcast
2h ago

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
SKW5974 SkyWest Airlines 5 2026-05-30
SKW5652 SkyWest Airlines 5 2026-05-09
SKW5357 SkyWest Airlines 5 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SKW4808 - Jul 13, 23:35 UTCJul 14, 00:05 UTC30m
2026-07-13 SKW394J - Jul 13, 22:10 UTCJul 13, 22:40 UTC30m
2026-07-13 SKW4752 - Jul 13, 18:20 UTCJul 13, 19:15 UTC55m
2026-07-13 SKW519Y - Jul 13, 16:15 UTCJul 13, 17:20 UTC1h 5m
2026-07-13 SKW519Y ORD → CAK Jul 13, 16:14 UTCJul 13, 17:07 UTC53m
2026-07-13 SKW6055 LNS → ORD Jul 13, 13:10 UTCJul 13, 14:40 UTC1h 30m
2026-07-12 SKW6060 ORD → LNS Jul 12, 22:35 UTCJul 13, 00:01 UTC1h 25m
2026-07-12 SKW5122 - Jul 12, 20:35 UTCJul 12, 21:35 UTC1h 0m
2026-07-12 SKW5122 EAU → ORD Jul 12, 20:34 UTCJul 12, 21:09 UTC35m
2026-07-12 SKW702H - Jul 12, 19:05 UTCJul 12, 19:45 UTC40m
2026-07-12 SKW6058 - Jul 12, 15:10 UTCJul 12, 15:55 UTC45m
2026-07-11 SKW364V - Jul 11, 22:20 UTCJul 11, 23:00 UTC40m
2026-07-11 SKW5352 - Jul 11, 20:10 UTCJul 11, 20:35 UTC25m
2026-07-11 SKW5352 SBN → ORD Jul 11, 20:15 UTCJul 11, 20:33 UTC18m
2026-07-11 SKW6086 - Jul 11, 18:45 UTCJul 11, 19:00 UTC15m
2026-07-11 SKW5263 ABE → ORD Jul 11, 14:45 UTCJul 11, 16:35 UTC1h 50m
2026-07-11 SKW5446 - Jul 11, 12:05 UTCJul 11, 13:30 UTC1h 25m
2026-07-11 SKW5799 - Jul 11, 10:35 UTCJul 11, 11:00 UTC25m
2026-07-08 SKW478V - Jul 8, 00:50 UTCJul 8, 01:10 UTC20m
2026-07-08 SKW478V ORD → MKE Jul 8, 00:46 UTCJul 8, 01:08 UTC22m
2026-07-07 SKW5100 - Jul 7, 17:05 UTCJul 7, 18:00 UTC55m
2026-07-07 SKW5100 FOD → ORD Jul 7, 16:44 UTCJul 7, 17:46 UTC1h 2m
2026-07-07 SKW5119 DEN → FOD Jul 7, 13:59 UTCJul 7, 15:08 UTC1h 9m
2026-07-07 SKW5119 - Jul 7, 13:50 UTCJul 7, 15:10 UTC1h 20m
2026-07-07 SKW5087 DRO → DEN Jul 7, 11:35 UTCJul 7, 12:20 UTC45m
2026-07-07 SKW546Y - Jul 7, 02:35 UTCJul 7, 03:10 UTC35m
2026-07-06 SKW5131 - Jul 6, 23:35 UTCJul 7, 00:50 UTC1h 15m
2026-07-06 SKW344H - Jul 6, 20:25 UTCJul 6, 21:25 UTC1h 0m
2026-07-06 SKW382H DEN → DEN Jul 6, 02:45 UTCJul 6, 17:55 UTC15h 10m
2026-07-05 SKW5131 - Jul 5, 23:35 UTCJul 6, 01:20 UTC1h 45m
2026-07-05 SKW344H - Jul 5, 20:45 UTCJul 5, 21:55 UTC1h 10m
2026-07-05 SKW344H DEN → ABI Jul 5, 20:41 UTCJul 5, 22:30 UTC1h 49m
2026-07-05 SKW5111 - Jul 5, 16:35 UTCJul 5, 18:00 UTC1h 25m
2026-07-05 SKW5111 JMS → DEN Jul 5, 16:45 UTCJul 5, 17:54 UTC1h 9m
2026-07-05 SKW5080 - Jul 5, 13:55 UTCJul 5, 15:10 UTC1h 15m
2026-07-05 SKW5061 - Jul 5, 11:25 UTCJul 5, 11:50 UTC25m
2026-07-05 SKW339A DEN → LBF Jul 5, 02:49 UTCJul 5, 03:13 UTC24m
2026-07-05 SKW339A - Jul 5, 02:40 UTCJul 5, 03:05 UTC25m
2026-07-05 SKW5107 - Jul 5, 00:40 UTCJul 5, 01:20 UTC40m
2026-07-04 SKW5039 - Jul 4, 22:30 UTCJul 4, 22:55 UTC25m
2026-07-04 SKW5039 DEN → LBF Jul 4, 22:38 UTCJul 4, 23:12 UTC34m
2026-07-04 SKW5024 - Jul 4, 20:15 UTCJul 4, 20:35 UTC20m
2026-07-04 SKW5024 DEN → CYS Jul 4, 18:45 UTCJul 4, 19:05 UTC20m
2026-07-04 SKW4631 - Jul 4, 15:35 UTCJul 4, 16:15 UTC40m
2026-07-04 SKW4771 DEN → CPR Jul 4, 13:59 UTCJul 4, 14:25 UTC26m
2026-07-04 SKW4771 - Jul 4, 13:50 UTCJul 4, 14:30 UTC40m
2026-07-04 SKW5061 - Jul 4, 11:30 UTCJul 4, 12:00 UTC30m
2026-07-04 SKW5061 LBF → DEN Jul 4, 11:34 UTCJul 4, 11:59 UTC25m
2026-07-04 SKW339A - Jul 4, 02:50 UTCJul 4, 03:15 UTC25m
2026-07-03 SKW5081 - Jul 3, 23:35 UTCJul 4, 01:20 UTC1h 45m

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 2h ago.
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.