Apparatus

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sensors Mode-S transponder

ACB124

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N917EV · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
ACB124
Octal
53130444
Decimal
11,317,540
Country
US
Tail
N917EV
Type
CRJ2
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
652
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S ACB124.

Country allocation

The ICAO 24-bit address ACB124 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
SKW6068 - 13 2026-07-10
SKW5111 - 9 2026-07-06
SKW5072 - 9 2026-07-02
SKW5080 - 8 2026-07-06
SKW357Z SkyWest Airlines 8 2026-07-25
SKW5053 - 7 2026-07-04
SKW5017 - 7 2026-06-14
SKW6062 - 6 2026-07-05
SKW5133 - 6 2026-07-09
SKW5067 SkyWest Airlines 6 2026-07-17
SKW5057 SkyWest Airlines 6 2026-07-26
SKW5400 - 5 2026-07-01
SKW5081 SkyWest Airlines 5 2026-07-24
SKW5043 - 5 2026-07-12
SKW4784 - 5 2026-06-19
SKW4645 - 5 2026-07-19
SKW768J SkyWest Airlines 4 2026-07-24
SKW6072 SkyWest Airlines 4 2026-07-25
SKW6055 - 4 2026-07-17
SKW5791 - 4 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5590 SFO → SLC Jul 26, 22:20 UTCJul 26, 23:00 UTC40m
2026-07-26 SKW5845 DCA → ORD Jul 26, 20:20 UTCJul 26, 21:30 UTC1h 10m
2026-07-26 SKW5028 SUX → ORD Jul 26, 18:25 UTCJul 26, 18:55 UTC30m
2026-07-26 SKW600C DEN → YQR Jul 26, 04:05 UTCJul 26, 04:45 UTC40m
2026-07-26 SKW5057 COS → DEN Jul 26, 01:20 UTCJul 26, 02:35 UTC1h 15m
2026-07-25 SKW483R DEN → SUX Jul 25, 23:05 UTCJul 26, 00:25 UTC1h 20m
2026-07-25 SKW5114 DEN → LBL Jul 25, 17:25 UTCJul 25, 18:35 UTC1h 10m
2026-07-25 SKW549C - Jul 25, 14:30 UTCJul 25, 15:35 UTC1h 5m
2026-07-25 SKW6072 DEN → ROW Jul 25, 11:40 UTCJul 25, 12:25 UTC45m
2026-07-25 SKW357Z DEN → EAR Jul 25, 03:30 UTCJul 25, 03:55 UTC25m
2026-07-25 SKW5057 COS → DEN Jul 25, 01:00 UTCJul 25, 02:15 UTC1h 15m
2026-07-25 SKW5057 COS → DEN Jul 25, 00:58 UTCJul 25, 02:01 UTC1h 3m
2026-07-24 SKW768J DEN → LBF Jul 24, 23:05 UTCJul 25, 00:10 UTC1h 5m
2026-07-24 SKW5037 ORD → DEC Jul 24, 20:08 UTCJul 24, 21:44 UTC1h 36m
2026-07-24 SKW382H DEN → SLN Jul 24, 04:15 UTCJul 24, 04:30 UTC15m
2026-07-24 SKW5081 DEN → JMS Jul 24, 01:05 UTCJul 24, 03:00 UTC1h 55m
2026-07-23 SKW5081 DEN → JMS Jul 23, 20:25 UTCJul 23, 21:45 UTC1h 20m
2026-07-23 SKW5081 DEN → JMS Jul 23, 20:27 UTCJul 23, 21:50 UTC1h 23m
2026-07-23 SKW5114 DEN → LBL Jul 23, 16:50 UTCJul 23, 18:05 UTC1h 15m
2026-07-23 SKW483R DEN → SUX Jul 23, 14:40 UTCJul 23, 15:45 UTC1h 5m
2026-07-22 SKW4650 DEN → SJC Jul 22, 21:00 UTCJul 23, 04:55 UTC7h 55m
2026-07-22 SKW5649 SFO → ONT Jul 22, 18:15 UTCJul 22, 19:30 UTC1h 15m
2026-07-22 SKW5831 SFO → JAC Jul 22, 16:00 UTCJul 22, 17:00 UTC1h 0m
2026-07-22 SKW5831 SFO → JAC Jul 22, 16:01 UTCJul 22, 16:58 UTC57m
2026-07-22 SKW5085 EAR → DEN Jul 22, 12:20 UTCJul 22, 12:50 UTC30m
2026-07-21 SKW592J DEN → LBL Jul 21, 23:40 UTCJul 22, 00:10 UTC30m
2026-07-21 SKW5054 - Jul 21, 11:35 UTCJul 21, 12:55 UTC1h 20m
2026-07-21 SKW347L DEN → SGU Jul 21, 03:30 UTCJul 21, 04:35 UTC1h 5m
2026-07-21 SKW561V SUX → DEN Jul 21, 00:00 UTCJul 21, 01:15 UTC1h 15m
2026-07-20 SKW330Z - Jul 20, 21:45 UTCJul 20, 22:50 UTC1h 5m
2026-07-20 SKW330Z ORD → SUX Jul 20, 21:33 UTCJul 20, 22:55 UTC1h 22m
2026-07-20 SKW5070 LAF → ORD Jul 20, 19:12 UTCJul 20, 19:48 UTC36m
2026-07-20 SKW5070 LAF → ORD Jul 20, 19:10 UTCJul 20, 19:55 UTC45m
2026-07-20 SKW5070 - Jul 20, 17:30 UTCJul 20, 18:00 UTC30m
2026-07-20 SKW5106 ORD → CMX Jul 20, 14:40 UTCJul 20, 16:05 UTC1h 25m
2026-07-19 SKW730V - Jul 19, 22:30 UTCJul 19, 23:45 UTC1h 15m
2026-07-19 SKW5783 - Jul 19, 19:45 UTCJul 19, 20:20 UTC35m
2026-07-19 SKW4645 - Jul 19, 15:40 UTCJul 19, 16:05 UTC25m
2026-07-19 SKW5910 LNK → ORD Jul 19, 12:55 UTCJul 19, 14:10 UTC1h 15m
2026-07-18 SKW5439 - Jul 18, 22:50 UTCJul 19, 00:00 UTC1h 10m
2026-07-18 SKW5439 ORD → LNK Jul 18, 22:39 UTCJul 18, 23:56 UTC1h 17m
2026-07-18 SKW6059 DEN → LBL Jul 18, 20:35 UTCJul 18, 21:25 UTC50m
2026-07-18 SKW6059 DEN → LBL Jul 18, 20:27 UTCJul 18, 21:21 UTC54m
2026-07-18 SKW6069 ORD → RHI Jul 18, 18:36 UTCJul 18, 19:09 UTC33m
2026-07-18 SKW6069 - Jul 18, 18:25 UTCJul 18, 19:10 UTC45m
2026-07-18 SKW5065 - Jul 18, 14:35 UTCJul 18, 16:10 UTC1h 35m
2026-07-18 SKW5065 LYH → ORD Jul 18, 14:45 UTCJul 18, 15:54 UTC1h 9m
2026-07-18 SKW5038 IAD → LYH Jul 18, 13:06 UTCJul 18, 13:07 UTC1m
2026-07-18 SKW5038 - Jul 18, 12:35 UTCJul 18, 12:50 UTC15m
2026-07-18 SKW5025 MGW → IAD Jul 18, 10:50 UTCJul 18, 11:30 UTC40m

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 N917EV page for operator, model, and routing details .

Mode-S ACB124 frequently asked

What is Mode-S code ACB124?
ACB124 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N917EV.
Where is Mode-S ACB124 registered?
Mode-S code ACB124 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 ACB124 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACB124, octal 53130444, decimal 11,317,540.
What flights does ACB124 operate?
Mode-S ACB124 has broadcast 20 distinct callsigns, including SKW6068, SKW5111, SKW5072, SKW5080, SKW357Z.