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sensors Mode-S transponder

AD854A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N970SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
AD854A
Octal
53302512
Decimal
11,371,850
Country
US
Tail
N970SW
Type
CRJ2
No current signal · last broadcast 3h ago
Flights observed
528
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S AD854A.

Country allocation

The ICAO 24-bit address AD854A 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 - 28 2026-07-16
SKW4729 SkyWest Airlines 26 2026-07-18
SKW5942 - 25 2026-07-16
SKW5338 - 25 2026-07-16
SKW5961 - 24 2026-07-16
SKW5738 - 24 2026-07-18
SKW5707 - 24 2026-07-16
SKW5557 - 24 2026-07-17
SKW5502 SkyWest Airlines 24 2026-07-17
SKW5796 - 23 2026-07-16
SKW4779 - 23 2026-07-16
SKW410Z - 23 2026-07-17
SKW5271 SkyWest Airlines 20 2026-07-18
SKW5592 - 19 2026-07-17
SKW6018 - 16 2026-07-16
SKW308R SkyWest Airlines 15 2026-06-23
SKW338F SkyWest Airlines 7 2026-07-17
SKW5335 SkyWest Airlines 4 2026-05-29
SKW5048 SkyWest Airlines 4 2026-05-23
SKW5604 - 3 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 SKW5271 SBP → SFO Jul 18, 04:20 UTCJul 18, 04:45 UTC25m
2026-07-18 SKW4729 MRY → SFO Jul 18, 02:19 UTCJul 18, 02:40 UTC20m
2026-07-18 SKW5738 - Jul 18, 00:25 UTCJul 18, 00:50 UTC25m
2026-07-18 SKW5738 SFO → MRY Jul 18, 00:14 UTCJul 18, 00:51 UTC37m
2026-07-17 SKW5557 - Jul 17, 23:00 UTCJul 17, 23:20 UTC20m
2026-07-17 SKW338F SFO → RDD Jul 17, 21:30 UTCJul 17, 21:55 UTC25m
2026-07-17 SKW5502 SNA → SFO Jul 17, 16:15 UTCJul 17, 16:34 UTC20m
2026-07-17 SKW410Z - Jul 17, 06:05 UTCJul 17, 06:25 UTC20m
2026-07-17 SKW410Z SFO → MRY Jul 17, 05:58 UTCJul 17, 06:24 UTC26m
2026-07-17 SKW5592 RDD → SFO Jul 17, 01:25 UTCJul 17, 02:15 UTC50m
2026-07-16 SKW6018 - Jul 16, 23:44 UTCJul 17, 00:20 UTC35m
2026-07-16 SKW4779 - Jul 16, 21:55 UTCJul 16, 22:49 UTC55m
2026-07-16 SKW5707 - Jul 16, 20:15 UTCJul 16, 20:45 UTC30m
2026-07-16 SKW5707 SFO → RNO Jul 16, 19:59 UTCJul 16, 20:48 UTC49m
2026-07-16 SKW5737 - Jul 16, 18:25 UTCJul 16, 18:55 UTC30m
2026-07-16 SKW5737 FAT → SFO Jul 16, 17:39 UTCJul 16, 18:50 UTC1h 11m
2026-07-16 SKW5942 - Jul 16, 16:25 UTCJul 16, 16:49 UTC25m
2026-07-16 SKW5338 - Jul 16, 14:10 UTCJul 16, 14:40 UTC30m
2026-07-16 SKW5271 - Jul 16, 04:35 UTCJul 16, 05:00 UTC25m
2026-07-16 SKW5961 - Jul 16, 02:55 UTCJul 16, 03:30 UTC35m
2026-07-16 SKW5796 SFO → SMF Jul 16, 00:30 UTCJul 16, 00:55 UTC25m
2026-07-15 SKW4729 - Jul 15, 22:45 UTCJul 15, 23:10 UTC25m
2026-07-15 SKW4729 MRY → SFO Jul 15, 22:47 UTCJul 15, 23:04 UTC17m
2026-07-15 SKW5738 - Jul 15, 21:15 UTCJul 15, 21:35 UTC20m
2026-07-15 SKW5557 - Jul 15, 20:00 UTCJul 15, 20:15 UTC15m
2026-07-15 SKW338F - Jul 15, 18:00 UTCJul 15, 18:15 UTC15m
2026-07-15 SKW5502 - Jul 15, 16:45 UTCJul 15, 17:05 UTC20m
2026-07-15 SKW410Z - Jul 15, 06:35 UTCJul 15, 07:00 UTC25m
2026-07-15 SKW5592 - Jul 15, 01:35 UTCJul 15, 02:20 UTC45m
2026-07-14 SKW6018 SFO → RDD Jul 14, 23:45 UTCJul 15, 00:25 UTC40m
2026-07-14 SKW6018 SFO → RDD Jul 14, 23:45 UTCJul 15, 00:14 UTC29m
2026-07-14 SKW4779 - Jul 14, 21:50 UTCJul 14, 22:40 UTC50m
2026-07-14 SKW4779 RNO → SFO Jul 14, 21:23 UTCJul 14, 22:35 UTC1h 12m
2026-07-14 SKW5707 - Jul 14, 19:25 UTCJul 14, 19:50 UTC25m
2026-07-14 SKW5737 - Jul 14, 17:55 UTCJul 14, 18:30 UTC35m
2026-07-14 SKW5942 SFO → FAT Jul 14, 15:46 UTCJul 14, 16:36 UTC50m
2026-07-14 SKW5942 - Jul 14, 16:05 UTCJul 14, 16:30 UTC25m
2026-07-14 SKW5338 - Jul 14, 13:50 UTCJul 14, 14:20 UTC30m
2026-07-14 SKW5271 - Jul 14, 04:10 UTCJul 14, 04:40 UTC30m
2026-07-14 SKW5961 SMF → SFO Jul 14, 02:57 UTCJul 14, 03:18 UTC21m
2026-07-14 SKW5961 SMF → SFO Jul 14, 02:50 UTCJul 14, 03:20 UTC30m
2026-07-14 SKW5796 SFO → SMF Jul 14, 01:10 UTCJul 14, 01:35 UTC25m
2026-07-14 SKW5796 SFO → SMF Jul 14, 00:57 UTCJul 14, 01:29 UTC32m
2026-07-13 SKW4729 - Jul 13, 23:15 UTCJul 13, 23:40 UTC25m
2026-07-13 SKW4729 MRY → SFO Jul 13, 22:39 UTCJul 13, 23:32 UTC53m
2026-07-13 SKW5738 - Jul 13, 21:25 UTCJul 13, 21:40 UTC15m
2026-07-13 SKW5557 - Jul 13, 20:10 UTCJul 13, 20:25 UTC15m
2026-07-13 SKW338F - Jul 13, 17:50 UTCJul 13, 18:10 UTC20m
2026-07-13 SKW5502 - Jul 13, 16:35 UTCJul 13, 17:00 UTC25m
2026-07-13 SKW410Z - Jul 13, 08:50 UTCJul 13, 09:10 UTC20m

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 N970SW page for operator, model, and routing details .

Mode-S AD854A frequently asked

What is Mode-S code AD854A?
AD854A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N970SW.
Where is Mode-S AD854A registered?
Mode-S code AD854A 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 AD854A broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD854A, octal 53302512, decimal 11,371,850.
What flights does AD854A operate?
Mode-S AD854A has broadcast 20 distinct callsigns, including SKW5737, SKW4729, SKW5942, SKW5338, SKW5961.