Apparatus

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sensors Mode-S transponder

AAA0FC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N784SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
AAA0FC
Octal
52520374
Decimal
11,182,332
Country
US
Tail
N784SK
Type
CRJ7
No current signal · last broadcast Jul 26, 08:25 UTC
Flights observed
622
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 08:25 UTC

Last known position

Most recent position reported by Mode-S AAA0FC.

Country allocation

The ICAO 24-bit address AAA0FC 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 30 2026-07-25
SKW5883 SkyWest Airlines 28 2026-07-25
SKW5706 SkyWest Airlines 26 2026-07-24
SKW5946 SkyWest Airlines 25 2026-07-21
SKW5724 - 24 2026-07-23
SKW5688 SkyWest Airlines 24 2026-07-26
SKW5549 SkyWest Airlines 22 2026-07-23
SKW5212 - 21 2026-07-21
SKW5406 SkyWest Airlines 20 2026-07-26
SKW5562 SkyWest Airlines 18 2026-07-22
SKW5236 SkyWest Airlines 18 2026-07-22
SKW5713 SkyWest Airlines 16 2026-07-26
SKW4661 SkyWest Airlines 16 2026-07-24
SKW4628 - 13 2026-07-10
SKW5880 SkyWest Airlines 11 2026-07-22
SKW6046 - 10 2026-06-23
SKW6044 - 9 2026-06-23
SKW5425 SkyWest Airlines 9 2026-07-21
SKW4739 SkyWest Airlines 9 2026-07-23
SKW4708 - 9 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5688 SFO → TUS Jul 26, 06:45 UTCJul 26, 08:25 UTC1h 40m
2026-07-26 SKW5713 SFO → RDD Jul 26, 04:20 UTCJul 26, 05:00 UTC40m
2026-07-26 SKW5406 IAH → PHL Jul 26, 01:50 UTCJul 26, 02:30 UTC40m
2026-07-25 SKW5351 SFO → SNA Jul 25, 23:20 UTCJul 26, 00:25 UTC1h 5m
2026-07-25 SKW5440 SLC → SFO Jul 25, 21:03 UTCJul 25, 21:49 UTC46m
2026-07-25 SKW5440 SLC → SFO Jul 25, 20:45 UTCJul 25, 21:55 UTC1h 10m
2026-07-25 SKW4683 MFR → SFO Jul 25, 16:55 UTCJul 25, 18:40 UTC1h 45m
2026-07-25 SKW4683 MFR → SFO Jul 25, 16:56 UTCJul 25, 18:33 UTC1h 37m
2026-07-25 SKW5688 SFO → TUS Jul 25, 05:35 UTCJul 25, 07:15 UTC1h 40m
2026-07-25 SKW5883 TVC → ORD Jul 25, 02:45 UTCJul 25, 04:05 UTC1h 20m
2026-07-24 SKW5706 ORD → LEX Jul 24, 23:35 UTCJul 25, 00:25 UTC50m
2026-07-24 SKW5706 ORD → LEX Jul 24, 23:47 UTCJul 25, 00:20 UTC33m
2026-07-24 SKW4661 DEN → SJC Jul 24, 20:50 UTCJul 24, 22:25 UTC1h 35m
2026-07-24 SKW430A SFO → BOI Jul 24, 17:40 UTCJul 24, 18:45 UTC1h 5m
2026-07-24 SKW4632 AVL → ORD Jul 24, 15:15 UTCJul 24, 16:00 UTC45m
2026-07-24 SKW4695 CVG → ORD Jul 24, 08:10 UTCJul 24, 08:35 UTC25m
2026-07-24 SKW4695 CVG → ORD Jul 24, 07:53 UTCJul 24, 08:43 UTC50m
2026-07-24 SKW5883 TVC → ORD Jul 24, 04:40 UTCJul 24, 06:27 UTC1h 47m
2026-07-24 SKW5883 TVC → ORD Jul 24, 05:25 UTCJul 24, 06:30 UTC1h 5m
2026-07-24 SKW5706 ORD → LEX Jul 24, 00:35 UTCJul 24, 01:25 UTC50m
2026-07-23 SKW4661 DEN → SJC Jul 23, 21:30 UTCJul 23, 23:05 UTC1h 35m
2026-07-23 SKW430A SFO → BOI Jul 23, 19:25 UTCJul 23, 20:35 UTC1h 10m
2026-07-23 SKW5549 RDD → SFO Jul 23, 17:25 UTCJul 23, 18:15 UTC50m
2026-07-23 SKW351M - Jul 23, 16:05 UTCJul 23, 16:40 UTC35m
2026-07-23 SKW5724 SFO → SFO Jul 23, 06:40 UTCJul 23, 07:35 UTC55m
2026-07-23 SKW5713 - Jul 23, 05:00 UTCJul 23, 05:40 UTC40m
2026-07-23 SKW5406 IAH → PHL Jul 23, 03:20 UTCJul 23, 04:00 UTC40m
2026-07-23 SKW4739 ORD → HSV Jul 23, 00:40 UTCJul 23, 01:55 UTC1h 15m
2026-07-22 SKW5880 SFO → SUN Jul 22, 20:25 UTCJul 22, 21:25 UTC1h 0m
2026-07-22 SKW5562 SCE → ORD Jul 22, 17:30 UTCJul 22, 18:30 UTC1h 0m
2026-07-22 SKW5562 SCE → ORD Jul 22, 17:25 UTCJul 22, 18:25 UTC1h 0m
2026-07-22 SKW5236 SBP → SFO Jul 22, 14:35 UTCJul 22, 15:40 UTC1h 5m
2026-07-22 SKW5549 RDD → SFO Jul 22, 12:25 UTCJul 22, 13:05 UTC40m
2026-07-22 SKW5713 - Jul 22, 03:55 UTCJul 22, 04:30 UTC35m
2026-07-22 SKW5406 IAH → PHL Jul 22, 01:45 UTCJul 22, 02:25 UTC40m
2026-07-22 SKW5406 IAH → PHL Jul 22, 01:51 UTCJul 22, 02:24 UTC33m
2026-07-21 SKW5946 SLP → IAH Jul 21, 22:20 UTCJul 21, 23:30 UTC1h 10m
2026-07-21 SKW5946 SLP → IAH Jul 21, 22:04 UTCJul 21, 23:25 UTC1h 21m
2026-07-21 SKW5212 - Jul 21, 19:25 UTCJul 21, 20:25 UTC1h 0m
2026-07-21 SKW5562 SCE → ORD Jul 21, 17:10 UTCJul 21, 18:15 UTC1h 5m
2026-07-21 SKW5236 SBP → SFO Jul 21, 14:35 UTCJul 21, 15:00 UTC25m
2026-07-21 SKW5236 SBP → SFO Jul 21, 14:29 UTCJul 21, 15:33 UTC1h 4m
2026-07-21 SKW5549 RDD → SFO Jul 21, 12:25 UTCJul 21, 13:05 UTC40m
2026-07-21 SKW5724 SFO → RDD Jul 21, 07:25 UTCJul 21, 07:55 UTC30m
2026-07-21 SKW5534 - Jul 21, 04:00 UTCJul 21, 05:40 UTC1h 40m
2026-07-21 SKW5425 SFO → ACV Jul 21, 00:50 UTCJul 21, 01:55 UTC1h 5m
2026-07-20 SKW5946 SLP → IAH Jul 20, 22:40 UTCJul 20, 23:40 UTC1h 0m
2026-07-20 SKW5946 SLP → IAH Jul 20, 22:41 UTCJul 20, 23:35 UTC54m
2026-07-20 SKW5212 - Jul 20, 20:40 UTCJul 20, 21:40 UTC1h 0m
2026-07-20 SKW5212 SFO → PSP Jul 20, 20:33 UTCJul 20, 21:40 UTC1h 7m

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 N784SK page for operator, model, and routing details .

Mode-S AAA0FC frequently asked

What is Mode-S code AAA0FC?
AAA0FC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N784SK.
Where is Mode-S AAA0FC registered?
Mode-S code AAA0FC 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 AAA0FC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 08:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAA0FC, octal 52520374, decimal 11,182,332.
What flights does AAA0FC operate?
Mode-S AAA0FC has broadcast 20 distinct callsigns, including SKW4683, SKW5883, SKW5706, SKW5946, SKW5724.