Apparatus

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sensors Mode-S transponder

ACB608

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N918SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
ACB608
Octal
53133010
Decimal
11,318,792
Country
US
Tail
N918SW
Type
CRJ2
No current signal · last broadcast Jul 25, 14:25 UTC
Flights observed
600
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 14:25 UTC

Last known position

Most recent position reported by Mode-S ACB608.

Country allocation

The ICAO 24-bit address ACB608 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
SKW6078 - 7 2026-07-18
SKW5091 SkyWest Airlines 7 2026-06-10
SKW5019 - 7 2026-06-14
SKW6062 - 6 2026-07-16
SKW5072 - 6 2026-06-26
SKW5039 - 6 2026-06-23
SKW5032 - 6 2026-07-18
SKW5719 SkyWest Airlines 5 2026-05-15
SKW5347 SkyWest Airlines 5 2026-06-13
SKW5087 SkyWest Airlines 5 2026-07-20
SKW5047 SkyWest Airlines 5 2026-06-10
SKW4677 - 5 2026-07-07
SKW404X SkyWest Airlines 5 2026-05-17
SKW357Z SkyWest Airlines 5 2026-06-23
SKW5901 SkyWest Airlines 4 2026-05-13
SKW583X - 4 2026-07-19
SKW5801 SkyWest Airlines 4 2026-05-13
SKW5755 - 4 2026-07-17
SKW5427 SkyWest Airlines 4 2026-05-15
SKW5380 SkyWest Airlines 4 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 SKW5195 SLC → DTW Jul 25, 13:20 UTCJul 25, 14:25 UTC1h 5m
2026-07-21 SKW5069 SLN → IAH Jul 21, 15:30 UTCJul 21, 17:00 UTC1h 30m
2026-07-21 SKW483J IAH → SLN Jul 21, 00:15 UTCJul 21, 01:35 UTC1h 20m
2026-07-20 SKW5044 - Jul 20, 21:20 UTCJul 20, 21:45 UTC25m
2026-07-20 SKW5044 AEX → IAH Jul 20, 21:16 UTCJul 20, 21:42 UTC26m
2026-07-20 SKW753F IAH → AEX Jul 20, 19:25 UTCJul 20, 19:50 UTC25m
2026-07-20 SKW788P - Jul 20, 17:15 UTCJul 20, 18:05 UTC50m
2026-07-20 SKW788P ABI → IAH Jul 20, 17:15 UTCJul 20, 18:02 UTC47m
2026-07-20 SKW425P - Jul 20, 14:40 UTCJul 20, 16:00 UTC1h 20m
2026-07-20 SKW5087 CMX → ORD Jul 20, 12:00 UTCJul 20, 12:50 UTC50m
2026-07-20 SKW546Y DEN → FMN Jul 20, 02:45 UTCJul 20, 03:15 UTC30m
2026-07-19 SKW790J PRC → DEN Jul 19, 23:50 UTCJul 20, 01:15 UTC1h 25m
2026-07-19 SKW790J PRC → DEN Jul 19, 23:35 UTCJul 20, 01:03 UTC1h 28m
2026-07-19 SKW394P - Jul 19, 20:40 UTCJul 19, 21:30 UTC50m
2026-07-19 SKW394P LAX → PRC Jul 19, 20:39 UTCJul 19, 21:34 UTC55m
2026-07-19 SKW376U PRC → LAX Jul 19, 18:20 UTCJul 19, 19:10 UTC50m
2026-07-19 SKW474E DEN → PRC Jul 19, 15:00 UTCJul 19, 16:10 UTC1h 10m
2026-07-19 SKW474E DEN → PRC Jul 19, 15:02 UTCJul 19, 16:15 UTC1h 13m
2026-07-19 SKW5063 ORD → CMX Jul 19, 12:00 UTCJul 19, 12:15 UTC15m
2026-07-19 SKW583X DEN → CYS Jul 19, 03:20 UTCJul 19, 03:45 UTC25m
2026-07-18 SKW5081 DEN → JMS Jul 18, 23:30 UTCJul 19, 00:50 UTC1h 20m
2026-07-18 SKW5081 DEN → JMS Jul 18, 20:30 UTCJul 18, 21:40 UTC1h 10m
2026-07-18 SKW6078 DEN → DEN Jul 18, 14:10 UTCJul 18, 18:10 UTC4h 0m
2026-07-18 SKW5032 - Jul 18, 11:50 UTCJul 18, 12:30 UTC40m
2026-07-18 SKW406P DEN → COD Jul 18, 03:25 UTCJul 18, 04:10 UTC45m
2026-07-18 SKW406P DEN → COD Jul 18, 03:22 UTCJul 18, 04:25 UTC1h 3m
2026-07-18 SKW5023 CMX → ORD Jul 18, 00:35 UTCJul 18, 01:15 UTC40m
2026-07-17 SKW5090 - Jul 17, 22:29 UTCJul 17, 23:05 UTC35m
2026-07-17 SKW5113 - Jul 17, 20:20 UTCJul 17, 21:34 UTC1h 15m
2026-07-17 SKW5113 - Jul 17, 18:05 UTCJul 17, 18:55 UTC50m
2026-07-17 SKW5096 - Jul 17, 15:25 UTCJul 17, 16:10 UTC45m
2026-07-17 SKW332T DEN → LBF Jul 17, 03:02 UTCJul 17, 04:02 UTC1h 0m
2026-07-17 SKW332T DEN → LBF Jul 17, 02:54 UTCJul 17, 03:30 UTC35m
2026-07-17 SKW5755 - Jul 17, 01:05 UTCJul 17, 01:49 UTC45m
2026-07-17 SKW5755 GJT → DEN Jul 17, 01:09 UTCJul 17, 01:42 UTC33m
2026-07-16 SKW4770 - Jul 16, 23:35 UTCJul 17, 00:20 UTC45m
2026-07-16 SKW4770 DEN → GJT Jul 16, 23:03 UTCJul 17, 00:20 UTC1h 17m
2026-07-16 SKW6063 MCW → ORD Jul 16, 21:00 UTCJul 16, 21:40 UTC40m
2026-07-16 SKW6062 - Jul 16, 18:05 UTCJul 16, 18:59 UTC55m
2026-07-16 SKW6062 DEN → WYS Jul 16, 17:59 UTCJul 16, 19:16 UTC1h 17m
2026-07-16 SKW4697 COS → DEN Jul 16, 11:45 UTCJul 16, 12:09 UTC25m
2026-07-15 SKW5209 DEN → COS Jul 15, 14:24 UTCJul 15, 14:36 UTC12m
2026-07-15 SKW5209 DEN → COS Jul 15, 14:15 UTCJul 15, 14:35 UTC20m
2026-07-13 SKW561V SUX → DEN Jul 13, 00:54 UTCJul 13, 01:55 UTC1h 1m
2026-07-12 SKW330Z - Jul 12, 21:45 UTCJul 12, 22:40 UTC55m
2026-07-12 SKW5070 - Jul 12, 19:40 UTCJul 12, 19:45 UTC5m
2026-07-12 SKW5070 - Jul 12, 19:05 UTCJul 12, 19:45 UTC40m
2026-07-12 SKW5070 LAF → ORD Jul 12, 19:09 UTCJul 12, 19:25 UTC16m
2026-07-12 SKW5070 - Jul 12, 17:35 UTCJul 12, 18:01 UTC25m
2026-07-12 SKW5106 - Jul 12, 14:35 UTCJul 12, 16:01 UTC1h 25m

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 N918SW page for operator, model, and routing details .

Mode-S ACB608 frequently asked

What is Mode-S code ACB608?
ACB608 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N918SW.
Where is Mode-S ACB608 registered?
Mode-S code ACB608 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 ACB608 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 14:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACB608, octal 53133010, decimal 11,318,792.
What flights does ACB608 operate?
Mode-S ACB608 has broadcast 20 distinct callsigns, including SKW6078, SKW5091, SKW5019, SKW6062, SKW5072.