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 18d ago
Flights observed
246
Distinct callsigns
20
Country
US
Last broadcast
18d 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
SKW6065 SkyWest Airlines 8 2026-07-24
SKW5113 - 7 2026-07-12
SKW5308 - 5 2026-07-13
SKW474E - 5 2026-07-09
SKW4736 - 5 2026-07-07
SKW5952 - 4 2026-06-30
SKW5915 SkyWest Airlines 4 2026-06-15
SKW5845 - 4 2026-07-01
SKW5590 - 4 2026-07-01
SKW5585 - 4 2026-07-17
SKW5131 - 4 2026-07-03
SKW5079 - 4 2026-07-08
SKW5078 - 4 2026-06-27
SKW4657 - 4 2026-07-17
SKW5861 SkyWest Airlines 3 2026-07-23
SKW5802 - 3 2026-07-16
SKW5513 - 3 2026-07-17
SKW546Y SkyWest Airlines 3 2026-07-22
SKW5143 - 3 2026-07-20
SKW5087 SkyWest Airlines 3 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW302C DEN → PIR Jul 26, 20:15 UTCJul 26, 21:15 UTC1h 0m
2026-07-26 SKW6078 ORD → PAH Jul 26, 14:25 UTCJul 26, 18:15 UTC3h 50m
2026-07-25 SKW4709 ORD → CMH Jul 25, 17:25 UTCJul 25, 18:20 UTC55m
2026-07-25 SKW5240 SFO → SBP Jul 25, 03:15 UTCJul 25, 03:30 UTC15m
2026-07-25 SKW5240 SFO → SBP Jul 25, 03:13 UTCJul 25, 03:52 UTC39m
2026-07-25 SKW5107 JST → ORD Jul 25, 00:50 UTCJul 25, 01:20 UTC30m
2026-07-24 SKW5039 ORD → CMX Jul 24, 23:00 UTCJul 24, 23:20 UTC20m
2026-07-24 SKW6065 TUS → IAH Jul 24, 20:40 UTCJul 24, 21:10 UTC30m
2026-07-24 SKW6065 TUS → IAH Jul 24, 20:29 UTCJul 24, 21:09 UTC40m
2026-07-24 SKW6065 TUS → IAH Jul 24, 18:35 UTCJul 24, 19:10 UTC35m
2026-07-24 SKW4690 CRW → ORD Jul 24, 15:55 UTCJul 24, 16:25 UTC30m
2026-07-24 SKW510A DEN → GJT Jul 24, 14:05 UTCJul 24, 14:20 UTC15m
2026-07-24 SKW4697 DCA → ORD Jul 24, 11:50 UTCJul 24, 12:15 UTC25m
2026-07-23 SKW5861 DEN → COS Jul 23, 04:55 UTCJul 23, 05:20 UTC25m
2026-07-22 SKW5742 - Jul 22, 19:45 UTCJul 22, 20:20 UTC35m
2026-07-22 SKW4674 - Jul 22, 16:25 UTCJul 22, 16:50 UTC25m
2026-07-22 SKW5087 CMX → ORD Jul 22, 11:40 UTCJul 22, 12:25 UTC45m
2026-07-22 SKW546Y DEN → FMN Jul 22, 02:30 UTCJul 22, 03:10 UTC40m
2026-07-21 SKW6083 IAH → GJT Jul 21, 22:50 UTCJul 22, 00:10 UTC1h 20m
2026-07-21 SKW6083 IAH → GJT Jul 21, 22:30 UTCJul 22, 00:05 UTC1h 35m
2026-07-20 SKW5143 - Jul 20, 18:10 UTCJul 20, 18:35 UTC25m
2026-07-20 SKW5143 - Jul 20, 16:55 UTCJul 20, 17:35 UTC40m
2026-07-20 SKW5143 DRO → OKC Jul 20, 16:43 UTCJul 20, 18:24 UTC1h 41m
2026-07-18 SKW546Y DEN → FMN Jul 18, 04:00 UTCJul 18, 04:35 UTC35m
2026-07-18 SKW5103 COD → DEN Jul 18, 01:51 UTCJul 18, 02:57 UTC1h 6m
2026-07-18 SKW5103 - Jul 18, 00:00 UTCJul 18, 00:45 UTC45m
2026-07-17 SKW4657 COS → DEN Jul 17, 21:15 UTCJul 17, 21:39 UTC25m
2026-07-17 SKW4775 DEN → COS Jul 17, 19:49 UTCJul 17, 20:10 UTC20m
2026-07-17 SKW5114 - Jul 17, 16:55 UTCJul 17, 18:00 UTC1h 5m
2026-07-17 SKW483R - Jul 17, 14:30 UTCJul 17, 15:40 UTC1h 10m
2026-07-17 SKW5513 - Jul 17, 11:30 UTCJul 17, 12:10 UTC40m
2026-07-17 SKW5585 DEN → CPR Jul 17, 02:05 UTCJul 17, 02:45 UTC40m
2026-07-16 SKW4635 GJT → DEN Jul 16, 23:49 UTCJul 17, 00:12 UTC23m
2026-07-16 SKW4635 - Jul 16, 23:29 UTCJul 17, 00:14 UTC45m
2026-07-16 SKW5488 - Jul 16, 19:55 UTCJul 16, 20:19 UTC25m
2026-07-16 SKW5488 DEN → GJT Jul 16, 19:45 UTCJul 16, 20:30 UTC45m
2026-07-16 SKW5053 - Jul 16, 16:49 UTCJul 16, 18:05 UTC1h 15m
2026-07-16 SKW792R - Jul 16, 14:45 UTCJul 16, 15:49 UTC1h 5m
2026-07-16 SKW5513 - Jul 16, 11:20 UTCJul 16, 12:05 UTC45m
2026-07-16 SKW5802 DEN → CPR Jul 16, 01:35 UTCJul 16, 02:15 UTC40m
2026-07-15 SKW4743 AMA → DEN Jul 15, 22:31 UTCJul 15, 23:32 UTC1h 1m
2026-07-15 SKW4743 DEN → DEN Jul 15, 20:25 UTCJul 15, 23:40 UTC3h 15m
2026-07-15 SKW6078 DEN → DEN Jul 15, 14:00 UTCJul 15, 18:35 UTC4h 35m
2026-07-15 SKW5513 - Jul 15, 12:05 UTCJul 15, 12:55 UTC50m
2026-07-15 SKW5585 - Jul 15, 00:20 UTCJul 15, 01:05 UTC45m
2026-07-15 SKW5585 DEN → CPR Jul 15, 00:11 UTCJul 15, 01:01 UTC50m
2026-07-14 SKW4657 COS → DEN Jul 14, 21:15 UTCJul 14, 21:40 UTC25m
2026-07-14 SKW4657 COS → DEN Jul 14, 21:19 UTCJul 14, 21:27 UTC8m
2026-07-14 SKW741Y DEN → COS Jul 14, 05:20 UTCJul 14, 05:40 UTC20m
2026-07-14 SKW5391 COS → DEN Jul 14, 00:45 UTCJul 14, 01:10 UTC25m

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 18d 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 SKW6065, SKW5113, SKW5308, SKW474E, SKW4736.