Apparatus

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sensors Mode-S transponder

AAD3A0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N797SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
AAD3A0
Octal
52551640
Decimal
11,195,296
Country
US
Tail
N797SK
Type
CRJ7
No current signal · last broadcast Jul 26, 20:40 UTC
Flights observed
414
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:40 UTC

Last known position

Most recent position reported by Mode-S AAD3A0.

Country allocation

The ICAO 24-bit address AAD3A0 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
SKW5481 SkyWest Airlines 13 2026-04-25
SKW5884 SkyWest Airlines 10 2026-04-30
SKW5225 SkyWest Airlines 10 2026-04-30
SKW5541 SkyWest Airlines 9 2026-04-25
SKW4783 SkyWest Airlines 9 2026-04-24
SKW5302 - 8 2026-06-18
SKW4633 SkyWest Airlines 8 2026-04-25
SKW5237 - 7 2026-07-13
SKW5912 SkyWest Airlines 6 2026-07-18
SKW5689 SkyWest Airlines 6 2026-07-19
SKW5643 - 6 2026-07-17
SKW5528 SkyWest Airlines 6 2026-04-29
SKW5289 SkyWest Airlines 6 2026-07-22
SKW5982 - 5 2026-07-19
SKW5752 SkyWest Airlines 5 2026-07-26
SKW4781 - 5 2026-07-07
SKW4636 SkyWest Airlines 5 2026-07-21
SKW6080 SkyWest Airlines 4 2026-05-28
SKW5826 - 4 2026-07-10
SKW5825 - 4 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5573 RDM → SFO Jul 26, 19:25 UTCJul 26, 20:40 UTC1h 15m
2026-07-26 SKW5754 ORD → BTV Jul 26, 16:20 UTCJul 26, 17:25 UTC1h 5m
2026-07-26 SKW5819 SFO → ASE Jul 26, 14:20 UTCJul 26, 15:20 UTC1h 0m
2026-07-26 SKW5752 BFL → DEN Jul 26, 11:20 UTCJul 26, 12:15 UTC55m
2026-07-26 SKW5752 BFL → DEN Jul 26, 11:29 UTCJul 26, 12:00 UTC31m
2026-07-25 SKW5640 ORD → TVC Jul 25, 20:50 UTCJul 25, 21:25 UTC35m
2026-07-25 SKW4748 GRB → ORD Jul 25, 18:50 UTCJul 25, 19:30 UTC40m
2026-07-25 SKW5720 SFO → BOI Jul 25, 17:05 UTCJul 25, 17:25 UTC20m
2026-07-25 SKW5383 TYS → DEN Jul 25, 14:25 UTCJul 25, 15:20 UTC55m
2026-07-25 SKW5287 FAT → SFO Jul 25, 00:15 UTCJul 25, 01:05 UTC50m
2026-07-24 SKW5865 BNA → ORD Jul 24, 22:40 UTCJul 24, 22:55 UTC15m
2026-07-24 SKW5505 ORD → SBN Jul 24, 21:10 UTCJul 24, 21:35 UTC25m
2026-07-24 SKW5617 PSP → SFO Jul 24, 18:20 UTCJul 24, 19:35 UTC1h 15m
2026-07-24 SKW6037 LAX → RDD Jul 24, 15:55 UTCJul 24, 17:10 UTC1h 15m
2026-07-23 SKW5686 FNT → ORD Jul 23, 20:00 UTCJul 23, 20:35 UTC35m
2026-07-23 SKW5686 FNT → ORD Jul 23, 20:05 UTCJul 23, 20:36 UTC31m
2026-07-23 SKW6033 ORD → MSY Jul 23, 18:00 UTCJul 23, 18:30 UTC30m
2026-07-23 SKW5853 LGA → ORD Jul 23, 12:35 UTCJul 23, 13:55 UTC1h 20m
2026-07-23 SKW5767 DAY → ORD Jul 23, 03:05 UTCJul 23, 04:15 UTC1h 10m
2026-07-22 SKW5289 ORD → MDT Jul 22, 22:05 UTCJul 22, 23:45 UTC1h 40m
2026-07-22 SKW5573 RDM → SFO Jul 22, 19:55 UTCJul 22, 21:05 UTC1h 10m
2026-07-22 SKW5754 ORD → BTV Jul 22, 16:35 UTCJul 22, 17:40 UTC1h 5m
2026-07-22 SKW5819 SFO → ASE Jul 22, 14:15 UTCJul 22, 15:15 UTC1h 0m
2026-07-21 SKW5052 JLN → DEN Jul 21, 22:35 UTCJul 22, 00:05 UTC1h 30m
2026-07-21 SKW5055 DEN → GCC Jul 21, 19:00 UTCJul 21, 20:25 UTC1h 25m
2026-07-21 SKW473M ORD → CIU Jul 21, 16:50 UTCJul 21, 17:35 UTC45m
2026-07-21 SKW5629 SAT → IAH Jul 21, 14:30 UTCJul 21, 15:30 UTC1h 0m
2026-07-21 SKW5703 SFO → PSP Jul 21, 12:05 UTCJul 21, 12:50 UTC45m
2026-07-21 SKW5723 - Jul 21, 09:50 UTCJul 21, 10:15 UTC25m
2026-07-21 SKW4636 ORD → SBN Jul 21, 00:40 UTCJul 21, 01:05 UTC25m
2026-07-20 SKW4685 - Jul 20, 21:00 UTCJul 20, 22:05 UTC1h 5m
2026-07-20 SKW5437 PHX → SFO Jul 20, 19:10 UTCJul 20, 20:05 UTC55m
2026-07-20 SKW5361 SLC → SFO Jul 20, 16:10 UTCJul 20, 17:40 UTC1h 30m
2026-07-20 SKW5330 SFO → MFR Jul 20, 13:45 UTCJul 20, 15:00 UTC1h 15m
2026-07-19 SKW5639 - Jul 19, 23:55 UTCJul 20, 01:25 UTC1h 30m
2026-07-19 SKW5689 SMF → SFO Jul 19, 21:40 UTCJul 19, 22:55 UTC1h 15m
2026-07-19 SKW5689 SMF → SFO Jul 19, 21:26 UTCJul 19, 22:55 UTC1h 29m
2026-07-19 SKW5603 - Jul 19, 18:35 UTCJul 19, 19:40 UTC1h 5m
2026-07-19 SKW5467 - Jul 19, 16:30 UTCJul 19, 17:20 UTC50m
2026-07-19 SKW4646 CAK → ORD Jul 19, 11:10 UTCJul 19, 12:25 UTC1h 15m
2026-07-19 SKW5982 - Jul 19, 02:40 UTCJul 19, 03:35 UTC55m
2026-07-18 SKW5606 - Jul 18, 23:25 UTCJul 19, 01:05 UTC1h 40m
2026-07-18 SKW5565 SUN → SFO Jul 18, 20:15 UTCJul 18, 21:35 UTC1h 20m
2026-07-18 SKW5912 LNK → ORD Jul 18, 16:00 UTCJul 18, 17:20 UTC1h 20m
2026-07-18 SKW5912 LNK → ORD Jul 18, 16:05 UTCJul 18, 17:13 UTC1h 8m
2026-07-18 SKW5824 DEN → LNK Jul 18, 02:55 UTCJul 18, 03:55 UTC1h 0m
2026-07-18 SKW4799 - Jul 18, 00:15 UTCJul 18, 01:15 UTC1h 0m
2026-07-17 SKW5643 - Jul 17, 22:05 UTCJul 17, 22:45 UTC40m
2026-07-17 SKW4663 DEN → BIS Jul 17, 16:34 UTCJul 17, 20:15 UTC3h 40m
2026-07-16 SKW5906 DEN → DEN Jul 16, 21:10 UTCJul 17, 01:00 UTC3h 50m

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 N797SK page for operator, model, and routing details .

Mode-S AAD3A0 frequently asked

What is Mode-S code AAD3A0?
AAD3A0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N797SK.
Where is Mode-S AAD3A0 registered?
Mode-S code AAD3A0 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 AAD3A0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAD3A0, octal 52551640, decimal 11,195,296.
What flights does AAD3A0 operate?
Mode-S AAD3A0 has broadcast 20 distinct callsigns, including SKW5481, SKW5884, SKW5225, SKW5541, SKW4783.