Apparatus

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sensors Mode-S transponder

AD906F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N973SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
AD906F
Octal
53310157
Decimal
11,374,703
Country
US
Tail
N973SW
Type
CRJ2
No current signal · last broadcast 4h ago
Flights observed
127
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S AD906F.

Country allocation

The ICAO 24-bit address AD906F 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
SKW5915 SkyWest Airlines 4 2026-06-15
SKW5078 - 4 2026-06-27
SKW4736 - 4 2026-06-27
SKW5845 - 3 2026-06-28
SKW5590 - 3 2026-06-28
SKW6092 SkyWest Airlines 2 2026-06-11
SKW5910 SkyWest Airlines 2 2026-06-12
SKW5887 SkyWest Airlines 2 2026-06-14
SKW5802 - 2 2026-06-27
SKW5614 - 2 2026-06-23
SKW5522 - 2 2026-06-29
SKW5521 SkyWest Airlines 2 2026-06-08
SKW5518 SkyWest Airlines 2 2026-06-29
SKW5451 SkyWest Airlines 2 2026-06-08
SKW5446 - 2 2026-06-20
SKW5432 - 2 2026-06-16
SKW5367 SkyWest Airlines 2 2026-06-29
SKW5344 SkyWest Airlines 2 2026-06-15
SKW5308 - 2 2026-06-23
SKW5245 - 2 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-30 SKW393X - Jun 30, 02:40 UTCJun 30, 03:25 UTC45m
2026-06-29 SKW5019 - Jun 29, 23:44 UTCJun 30, 01:19 UTC1h 35m
2026-06-29 SKW5019 ATY → DEN Jun 29, 23:29 UTCJun 30, 01:04 UTC1h 35m
2026-06-29 SKW527Y - Jun 29, 20:40 UTCJun 29, 21:34 UTC55m
2026-06-29 SKW5522 - Jun 29, 18:44 UTCJun 29, 19:35 UTC50m
2026-06-29 SKW5522 GCC → DEN Jun 29, 18:31 UTCJun 29, 19:27 UTC56m
2026-06-29 SKW5518 SFO → JAC Jun 29, 16:25 UTCJun 29, 16:59 UTC35m
2026-06-29 SKW5518 SFO → JAC Jun 29, 16:22 UTCJun 29, 17:12 UTC50m
2026-06-29 SKW5367 YUL → ORD Jun 29, 12:44 UTCJun 29, 14:30 UTC1h 46m
2026-06-29 SKW5367 YUL → ORD Jun 29, 01:29 UTCJun 29, 14:44 UTC13h 15m
2026-06-28 SKW5590 - Jun 28, 22:24 UTCJun 28, 23:54 UTC1h 30m
2026-06-28 SKW5590 BIL → DEN Jun 28, 22:27 UTCJun 28, 23:55 UTC1h 28m
2026-06-28 SKW5845 - Jun 28, 19:59 UTCJun 28, 21:10 UTC1h 10m
2026-06-28 SKW5245 - Jun 28, 18:00 UTCJun 28, 18:44 UTC45m
2026-06-28 SKW5245 CPR → DEN Jun 28, 17:42 UTCJun 28, 18:40 UTC58m
2026-06-28 SKW5743 - Jun 28, 15:44 UTCJun 28, 16:25 UTC40m
2026-06-28 SKW5564 - Jun 28, 13:40 UTCJun 28, 14:30 UTC50m
2026-06-28 SKW6025 - Jun 28, 02:54 UTCJun 28, 03:29 UTC35m
2026-06-27 SKW5078 - Jun 27, 20:24 UTCJun 27, 21:29 UTC1h 5m
2026-06-27 SKW5078 SGU → DEN Jun 27, 20:20 UTCJun 27, 21:28 UTC1h 8m
2026-06-27 SKW5113 - Jun 27, 17:55 UTCJun 27, 19:09 UTC1h 15m
2026-06-27 SKW5113 DEN → SGU Jun 27, 17:44 UTCJun 27, 19:18 UTC1h 34m
2026-06-27 SKW4736 CPR → DEN Jun 27, 15:06 UTCJun 27, 15:33 UTC27m
2026-06-27 SKW4736 - Jun 27, 14:49 UTCJun 27, 15:34 UTC45m
2026-06-27 SKW5802 - Jun 27, 01:54 UTCJun 27, 02:29 UTC35m
2026-06-27 SKW5802 DEN → CPR Jun 27, 01:50 UTCJun 27, 02:33 UTC43m
2026-06-26 SKW5590 - Jun 26, 22:40 UTCJun 27, 00:00 UTC1h 20m
2026-06-26 SKW5845 - Jun 26, 20:10 UTCJun 26, 21:24 UTC1h 15m
2026-06-26 SKW5845 DEN → BIL Jun 26, 20:05 UTCJun 26, 21:23 UTC1h 18m
2026-06-26 SKW5037 BTM → DEN Jun 26, 16:29 UTCJun 26, 17:58 UTC1h 29m
2026-06-26 SKW382H DEN → DEN Jun 26, 03:15 UTCJun 26, 17:59 UTC14h 45m
2026-06-26 SKW5097 - Jun 26, 00:35 UTCJun 26, 01:39 UTC1h 5m
2026-06-25 SKW5097 SGU → DEN Jun 25, 23:59 UTCJun 26, 01:34 UTC1h 35m
2026-06-25 SKW5117 - Jun 25, 20:39 UTCJun 25, 21:29 UTC50m
2026-06-25 SKW5117 LAX → SGU Jun 25, 20:44 UTCJun 25, 21:31 UTC47m
2026-06-25 SKW376U - Jun 25, 18:24 UTCJun 25, 19:20 UTC55m
2026-06-25 SKW474E - Jun 25, 14:59 UTCJun 25, 16:20 UTC1h 20m
2026-06-25 SKW5087 - Jun 25, 11:50 UTCJun 25, 12:30 UTC40m
2026-06-25 SKW5100 - Jun 25, 03:10 UTCJun 25, 03:50 UTC40m
2026-06-25 SKW5100 DEN → FMN Jun 25, 03:13 UTCJun 25, 03:59 UTC46m
2026-06-25 SKW790J - Jun 25, 01:04 UTCJun 25, 02:19 UTC1h 15m
2026-06-24 SKW394P - Jun 24, 20:44 UTCJun 24, 21:29 UTC45m
2026-06-24 SKW6069 - Jun 24, 18:09 UTCJun 24, 19:10 UTC1h 0m
2026-06-24 SKW474E - Jun 24, 14:39 UTCJun 24, 15:54 UTC1h 15m
2026-06-23 SKW5137 HYS → DEN Jun 23, 22:29 UTCJun 24, 12:44 UTC14h 15m
2026-06-23 SKW4647 - Jun 23, 19:55 UTCJun 23, 20:15 UTC20m
2026-06-23 SKW5614 DEN → COS Jun 23, 18:34 UTCJun 23, 18:55 UTC20m
2026-06-23 SKW5614 DEN → COS Jun 23, 18:38 UTCJun 23, 18:52 UTC14m
2026-06-23 SKW5400 - Jun 23, 16:44 UTCJun 23, 17:04 UTC20m
2026-06-23 SKW5308 DEN → COS Jun 23, 00:00 UTCJun 23, 00:19 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 N973SW page for operator, model, and routing details .

Mode-S AD906F frequently asked

What is Mode-S code AD906F?
AD906F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N973SW.
Where is Mode-S AD906F registered?
Mode-S code AD906F 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 AD906F broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD906F, octal 53310157, decimal 11,374,703.
What flights does AD906F operate?
Mode-S AD906F has broadcast 20 distinct callsigns, including SKW5915, SKW5078, SKW4736, SKW5845, SKW5590.