Apparatus

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sensors Mode-S transponder

AA9220

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N780SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
AA9220
Octal
52511040
Decimal
11,178,528
Country
US
Tail
N780SK
Type
CRJ7
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
660
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S AA9220.

Country allocation

The ICAO 24-bit address AA9220 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
SKW4683 SkyWest Airlines 31 2026-07-23
SKW5688 SkyWest Airlines 24 2026-07-23
SKW5706 SkyWest Airlines 19 2026-07-23
SKW4628 - 19 2026-07-15
SKW4632 SkyWest Airlines 18 2026-07-26
SKW5713 SkyWest Airlines 17 2026-07-25
SKW5236 SkyWest Airlines 15 2026-07-20
SKW5883 SkyWest Airlines 14 2026-07-23
SKW5880 SkyWest Airlines 14 2026-07-24
SKW5406 SkyWest Airlines 14 2026-07-25
SKW5401 - 14 2026-07-15
SKW4753 SkyWest Airlines 14 2026-05-21
SKW4739 SkyWest Airlines 14 2026-07-24
SKW5562 SkyWest Airlines 13 2026-07-24
SKW4695 SkyWest Airlines 13 2026-07-21
SKW4661 SkyWest Airlines 13 2026-07-26
SKW5946 SkyWest Airlines 12 2026-07-23
SKW5446 SkyWest Airlines 11 2026-05-21
SKW5613 SkyWest Airlines 10 2026-07-17
SKW5212 SkyWest Airlines 10 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4661 DEN → SJC Jul 26, 20:15 UTCJul 26, 22:00 UTC1h 45m
2026-07-26 SKW430A SFO → BOI Jul 26, 17:45 UTCJul 26, 18:55 UTC1h 10m
2026-07-26 SKW4632 AVL → ORD Jul 26, 15:05 UTCJul 26, 15:50 UTC45m
2026-07-26 SKW4632 AVL → ORD Jul 26, 14:56 UTCJul 26, 15:45 UTC49m
2026-07-26 SKW5626 SFO → BUR Jul 26, 04:40 UTCJul 26, 05:10 UTC30m
2026-07-26 SKW5349 SGF → ORD Jul 26, 03:00 UTCJul 26, 03:25 UTC25m
2026-07-26 SKW5349 SGF → ORD Jul 26, 02:59 UTCJul 26, 03:27 UTC28m
2026-07-25 SKW4806 ORD → CRW Jul 25, 22:25 UTCJul 26, 00:20 UTC1h 55m
2026-07-25 SKW4806 ORD → CRW Jul 25, 22:15 UTCJul 26, 00:18 UTC2h 3m
2026-07-25 SKW4720 MSN → ORD Jul 25, 19:30 UTCJul 25, 20:30 UTC1h 0m
2026-07-25 SKW5605 MRY → SFO Jul 25, 16:10 UTCJul 25, 17:35 UTC1h 25m
2026-07-25 SKW5713 SFO → RDD Jul 25, 05:45 UTCJul 25, 06:25 UTC40m
2026-07-25 SKW5713 SFO → RDD Jul 25, 05:51 UTCJul 25, 06:24 UTC33m
2026-07-25 SKW5406 IAH → PHL Jul 25, 02:25 UTCJul 25, 03:05 UTC40m
2026-07-24 SKW4739 ORD → HSV Jul 24, 23:35 UTCJul 25, 01:05 UTC1h 30m
2026-07-24 SKW5880 SFO → SUN Jul 24, 20:30 UTCJul 24, 21:30 UTC1h 0m
2026-07-24 SKW5562 SCE → ORD Jul 24, 17:40 UTCJul 24, 18:45 UTC1h 5m
2026-07-24 SLW5236 - Jul 24, 14:55 UTCJul 24, 16:05 UTC1h 10m
2026-07-24 SKW5534 RDM → SFO Jul 24, 03:10 UTCJul 24, 05:05 UTC1h 55m
2026-07-24 SKW5534 RDM → SFO Jul 24, 03:09 UTCJul 24, 04:48 UTC1h 39m
2026-07-24 SKW5425 SFO → ACV Jul 24, 00:35 UTCJul 24, 01:35 UTC1h 0m
2026-07-23 SKW5946 SLP → IAH Jul 23, 22:15 UTCJul 23, 23:20 UTC1h 5m
2026-07-23 SKW5212 LGA → ORD Jul 23, 20:15 UTCJul 23, 21:10 UTC55m
2026-07-23 SKW4683 MFR → SFO Jul 23, 16:45 UTCJul 23, 18:35 UTC1h 50m
2026-07-23 SKW4683 MFR → SFO Jul 23, 16:44 UTCJul 23, 18:31 UTC1h 47m
2026-07-23 SKW5688 SFO → TUS Jul 23, 05:52 UTCJul 23, 07:34 UTC1h 42m
2026-07-23 SKW5688 SFO → TUS Jul 23, 05:45 UTCJul 23, 07:35 UTC1h 50m
2026-07-23 SKW5883 TVC → ORD Jul 23, 03:40 UTCJul 23, 04:45 UTC1h 5m
2026-07-23 SKW5706 ORD → LEX Jul 23, 01:55 UTCJul 23, 02:45 UTC50m
2026-07-22 SKW5946 SLP → IAH Jul 22, 22:40 UTCJul 22, 23:45 UTC1h 5m
2026-07-22 SKW5212 LGA → ORD Jul 22, 20:00 UTCJul 22, 21:00 UTC1h 0m
2026-07-22 SKW4683 MFR → SFO Jul 22, 16:50 UTCJul 22, 18:45 UTC1h 55m
2026-07-22 SKW4683 MFR → SFO Jul 22, 16:49 UTCJul 22, 18:38 UTC1h 49m
2026-07-22 SKW5688 SFO → TUS Jul 22, 04:20 UTCJul 22, 05:25 UTC1h 5m
2026-07-22 SLW5883 MFR → SFO Jul 22, 01:50 UTCJul 22, 02:50 UTC1h 0m
2026-07-21 SKW5706 ORD → LEX Jul 21, 23:45 UTCJul 22, 00:35 UTC50m
2026-07-21 SKW5706 ORD → LEX Jul 21, 23:38 UTCJul 22, 00:29 UTC51m
2026-07-21 SKW4661 DEN → SJC Jul 21, 20:45 UTCJul 21, 22:10 UTC1h 25m
2026-07-21 SKW430A SFO → BOI Jul 21, 18:40 UTCJul 21, 19:50 UTC1h 10m
2026-07-21 SKW4632 AVL → ORD Jul 21, 15:25 UTCJul 21, 16:10 UTC45m
2026-07-21 SKW4695 CVG → ORD Jul 21, 08:05 UTCJul 21, 08:35 UTC30m
2026-07-21 SKW5713 - Jul 21, 06:35 UTCJul 21, 07:10 UTC35m
2026-07-21 SKW5406 IAH → PHL Jul 21, 05:00 UTCJul 21, 05:45 UTC45m
2026-07-21 SKW5406 IAH → PHL Jul 21, 04:58 UTCJul 21, 05:41 UTC43m
2026-07-21 SKW4739 - Jul 21, 02:25 UTCJul 21, 03:50 UTC1h 25m
2026-07-21 SKW5880 SFO → SUN Jul 21, 00:30 UTCJul 21, 01:30 UTC1h 0m
2026-07-20 SKW5562 SCE → ORD Jul 20, 22:00 UTCJul 20, 22:55 UTC55m
2026-07-20 SKW5236 SBP → SFO Jul 20, 19:45 UTCJul 20, 20:55 UTC1h 10m
2026-07-20 SKW5549 RDD → SFO Jul 20, 18:00 UTCJul 20, 18:45 UTC45m
2026-07-20 SKW5724 - Jul 20, 06:50 UTCJul 20, 07:25 UTC35m

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 N780SK page for operator, model, and routing details .

Mode-S AA9220 frequently asked

What is Mode-S code AA9220?
AA9220 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N780SK.
Where is Mode-S AA9220 registered?
Mode-S code AA9220 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 AA9220 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA9220, octal 52511040, decimal 11,178,528.
What flights does AA9220 operate?
Mode-S AA9220 has broadcast 20 distinct callsigns, including SKW4683, SKW5688, SKW5706, SKW4628, SKW4632.