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sensors Mode-S transponder

AD97DD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N975SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKY WEST AIRLINES INC

Hex
AD97DD
Octal
53313735
Decimal
11,376,605
Country
US
Tail
N975SW
Type
CRJ2
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
685
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S AD97DD.

Country allocation

The ICAO 24-bit address AD97DD 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
SKW5807 - 11 2026-07-13
SKW5953 SkyWest Airlines 8 2026-07-25
SKW5949 - 8 2026-07-13
SKW5907 SkyWest Airlines 8 2026-07-22
SKW5432 SkyWest Airlines 7 2026-07-25
SKW6073 - 6 2026-07-19
SKW5135 SkyWest Airlines 6 2026-07-18
SKW5129 SkyWest Airlines 6 2026-05-22
SKW5110 SkyWest Airlines 6 2026-07-26
SKW5045 - 6 2026-07-15
SKW5016 - 6 2026-07-18
SKW4784 - 6 2026-07-08
SKW6079 SkyWest Airlines 5 2026-07-22
SKW5887 SkyWest Airlines 5 2026-07-25
SKW5710 - 5 2026-06-24
SKW5436 SkyWest Airlines 5 2026-07-24
SKW5380 SkyWest Airlines 5 2026-06-13
SKW5320 - 5 2026-07-12
SKW5128 SkyWest Airlines 5 2026-06-08
SKW5095 - 5 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5335 PNS → DEN Jul 26, 19:50 UTCJul 26, 21:15 UTC1h 25m
2026-07-26 SKW5282 ORD → MSN Jul 26, 17:32 UTCJul 26, 18:55 UTC1h 23m
2026-07-26 SKW5110 PIB → IAH Jul 26, 14:55 UTCJul 26, 15:30 UTC35m
2026-07-26 SKW5110 PIB → IAH Jul 26, 14:54 UTCJul 26, 15:28 UTC34m
2026-07-26 SKW460P IAH → AEX Jul 26, 00:00 UTCJul 26, 00:20 UTC20m
2026-07-25 SKW5327 SBA → SFO Jul 25, 20:50 UTCJul 25, 22:15 UTC1h 25m
2026-07-25 SKW5691 SFO → BUR Jul 25, 18:00 UTCJul 25, 19:25 UTC1h 25m
2026-07-25 SKW5691 SFO → BUR Jul 25, 18:12 UTCJul 25, 19:24 UTC1h 12m
2026-07-25 SKW5953 SFO → SBA Jul 25, 16:25 UTCJul 25, 16:50 UTC25m
2026-07-25 SKW5953 SFO → SBA Jul 25, 15:59 UTCJul 25, 16:29 UTC30m
2026-07-25 SKW5887 BUR → SFO Jul 25, 15:00 UTCJul 25, 15:25 UTC25m
2026-07-25 SKW5432 DEN → SJC Jul 25, 11:45 UTCJul 25, 13:00 UTC1h 15m
2026-07-24 SKW5439 ORD → CRW Jul 24, 23:20 UTCJul 25, 00:35 UTC1h 15m
2026-07-24 SKW5439 ORD → CRW Jul 24, 23:18 UTCJul 25, 00:29 UTC1h 11m
2026-07-24 SKW5436 TYS → ORD Jul 24, 21:10 UTCJul 24, 21:40 UTC30m
2026-07-24 SKW393H ORD → CAK Jul 24, 19:45 UTCJul 24, 20:10 UTC25m
2026-07-24 SKW393H ORD → CAK Jul 24, 19:42 UTCJul 24, 20:14 UTC32m
2026-07-24 SKW5036 CYS → DEN Jul 24, 16:00 UTCJul 24, 16:50 UTC50m
2026-07-24 SKW5036 CYS → DEN Jul 24, 15:45 UTCJul 24, 16:46 UTC1h 1m
2026-07-24 SKW486F ORD → MCW Jul 24, 14:05 UTCJul 24, 14:50 UTC45m
2026-07-24 SKW486F ORD → MCW Jul 24, 14:15 UTCJul 24, 14:42 UTC27m
2026-07-24 SKW5121 EAU → ORD Jul 24, 10:05 UTCJul 24, 10:55 UTC50m
2026-07-24 SKW5124 SUX → ORD Jul 24, 03:20 UTCJul 24, 04:05 UTC45m
2026-07-23 SKW4808 MFR → SFO Jul 23, 22:45 UTCJul 23, 23:40 UTC55m
2026-07-23 SKW394J ORD → PIA Jul 23, 21:17 UTCJul 23, 21:19 UTC2m
2026-07-23 SKW394J ORD → PIA Jul 23, 20:55 UTCJul 23, 21:15 UTC20m
2026-07-23 SKW5915 ORD → BNA Jul 23, 18:00 UTCJul 23, 18:40 UTC40m
2026-07-23 SKW5344 ORD → MSN Jul 23, 16:15 UTCJul 23, 16:55 UTC40m
2026-07-23 SKW4670 ORD → LEX Jul 23, 12:30 UTCJul 23, 13:45 UTC1h 15m
2026-07-23 SKW359M ORD → DLH Jul 23, 03:20 UTCJul 23, 04:10 UTC50m
2026-07-23 SKW4681 DEN → LEX Jul 23, 00:10 UTCJul 23, 01:10 UTC1h 0m
2026-07-22 SKW5907 ORD → MLI Jul 22, 21:10 UTCJul 22, 21:50 UTC40m
2026-07-22 SKW440U SFO → SBP Jul 22, 17:05 UTCJul 22, 17:15 UTC10m
2026-07-22 SKW440U SFO → SBP Jul 22, 17:05 UTCJul 22, 17:49 UTC44m
2026-07-22 SKW6079 IAH → PAH Jul 22, 02:30 UTCJul 22, 03:20 UTC50m
2026-07-22 SKW6079 IAH → PAH Jul 22, 02:16 UTCJul 22, 03:18 UTC1h 2m
2026-07-22 SKW4681 GRB → ORD Jul 22, 00:00 UTCJul 22, 00:55 UTC55m
2026-07-22 SKW4681 GRB → ORD Jul 22, 00:04 UTCJul 22, 00:45 UTC41m
2026-07-21 SKW5907 ORD → MLI Jul 21, 21:30 UTCJul 21, 22:10 UTC40m
2026-07-21 SKW5907 ORD → MLI Jul 21, 21:12 UTCJul 21, 22:11 UTC59m
2026-07-21 SKW5399 BWI → LGA Jul 21, 15:40 UTCJul 21, 16:05 UTC25m
2026-07-21 SKW5399 BWI → LGA Jul 21, 15:44 UTCJul 21, 16:05 UTC21m
2026-07-21 SKW5842 - Jul 21, 14:20 UTCJul 21, 14:35 UTC15m
2026-07-21 SKW5842 ORD → MKE Jul 21, 14:16 UTCJul 21, 14:31 UTC15m
2026-07-21 SKW5231 SDF → ORD Jul 21, 12:20 UTCJul 21, 12:50 UTC30m
2026-07-20 SKW5274 GRB → ORD Jul 20, 03:15 UTCJul 20, 03:35 UTC20m
2026-07-20 SKW5274 GRB → ORD Jul 20, 03:01 UTCJul 20, 03:32 UTC31m
2026-07-20 SKW4792 - Jul 20, 00:10 UTCJul 20, 01:30 UTC1h 20m
2026-07-19 SKW5296 - Jul 19, 21:45 UTCJul 19, 22:55 UTC1h 10m
2026-07-19 SKW6073 - Jul 19, 18:40 UTCJul 19, 20:00 UTC1h 20m

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 N975SW page for operator, model, and routing details .

Mode-S AD97DD frequently asked

What is Mode-S code AD97DD?
AD97DD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N975SW.
Where is Mode-S AD97DD registered?
Mode-S code AD97DD 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 AD97DD broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD97DD, octal 53313735, decimal 11,376,605.
What flights does AD97DD operate?
Mode-S AD97DD has broadcast 20 distinct callsigns, including SKW5807, SKW5953, SKW5949, SKW5907, SKW5432.