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
Transponder active on ground
Flights observed
510
Distinct callsigns
20
Country
US
Last broadcast
16m ago

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 - 24 2026-07-07
SKW5883 - 21 2026-07-12
SKW5706 - 21 2026-07-12
SKW5688 - 19 2026-07-07
SKW5724 - 18 2026-07-14
SKW5946 - 15 2026-07-12
SKW5549 - 15 2026-07-13
SKW5562 - 13 2026-07-13
SKW5406 - 13 2026-07-14
SKW5236 - 13 2026-07-13
SKW4661 - 13 2026-07-08
SKW4628 - 13 2026-07-10
SKW5713 - 12 2026-07-14
SKW5212 - 12 2026-07-12
SKW6046 - 10 2026-06-23
SKW6044 - 9 2026-06-23
SKW5880 - 9 2026-07-13
SKW4708 - 9 2026-06-23
SKW5707 SkyWest Airlines 8 2026-05-22
SKW5650 SkyWest Airlines 8 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW5724 - Jul 14, 06:40 UTCJul 14, 07:00 UTC20m
2026-07-14 SKW5713 - Jul 14, 03:50 UTCJul 14, 04:40 UTC50m
2026-07-14 SKW5406 - Jul 14, 01:50 UTCJul 14, 02:30 UTC40m
2026-07-13 SKW4739 - Jul 13, 23:15 UTCJul 14, 00:40 UTC1h 25m
2026-07-13 SKW4739 RDM → SFO Jul 13, 23:11 UTCJul 14, 00:25 UTC1h 14m
2026-07-13 SKW5880 - Jul 13, 20:20 UTCJul 13, 21:25 UTC1h 5m
2026-07-13 SKW5880 SFO → RDM Jul 13, 20:26 UTCJul 13, 21:23 UTC57m
2026-07-13 SKW5562 - Jul 13, 17:50 UTCJul 13, 18:45 UTC55m
2026-07-13 SKW5562 SNA → SFO Jul 13, 17:53 UTCJul 13, 19:00 UTC1h 7m
2026-07-13 SKW5236 SFO → SNA Jul 13, 14:36 UTCJul 13, 15:46 UTC1h 10m
2026-07-13 SKW5236 SFO → SNA Jul 13, 14:40 UTCJul 13, 15:50 UTC1h 10m
2026-07-13 SKW5549 RDD → SFO Jul 13, 12:15 UTCJul 13, 13:00 UTC45m
2026-07-13 SKW5724 SFO → RDD Jul 13, 06:40 UTCJul 13, 07:15 UTC35m
2026-07-13 SKW5724 SFO → RDD Jul 13, 06:35 UTCJul 13, 07:07 UTC32m
2026-07-13 SKW5534 - Jul 13, 04:05 UTCJul 13, 05:25 UTC1h 20m
2026-07-13 SKW5425 SFO → RDM Jul 13, 00:50 UTCJul 13, 01:50 UTC1h 0m
2026-07-13 SKW5425 SFO → RDM Jul 13, 00:33 UTCJul 13, 02:17 UTC1h 44m
2026-07-12 SKW5946 - Jul 12, 21:55 UTCJul 12, 22:55 UTC1h 0m
2026-07-12 SKW5212 - Jul 12, 19:30 UTCJul 12, 20:30 UTC1h 0m
2026-07-12 SKW5562 - Jul 12, 17:10 UTCJul 12, 18:15 UTC1h 5m
2026-07-12 SKW5562 SNA → SFO Jul 12, 17:03 UTCJul 12, 18:11 UTC1h 8m
2026-07-12 SKW5236 SFO → SNA Jul 12, 14:35 UTCJul 12, 15:50 UTC1h 15m
2026-07-12 SKW5549 RDD → SFO Jul 12, 12:32 UTCJul 12, 13:10 UTC38m
2026-07-12 SKW5549 RDD → SFO Jul 12, 12:20 UTCJul 12, 13:01 UTC40m
2026-07-12 SKW5724 SFO → RDD Jul 12, 06:20 UTCJul 12, 06:55 UTC35m
2026-07-12 SKW5724 SFO → RDD Jul 12, 06:16 UTCJul 12, 06:51 UTC35m
2026-07-12 SKW5883 MFR → SFO Jul 12, 02:35 UTCJul 12, 03:45 UTC1h 10m
2026-07-12 SKW5706 - Jul 12, 00:30 UTCJul 12, 01:15 UTC45m
2026-07-11 SKW5490 - Jul 11, 21:05 UTCJul 11, 22:50 UTC1h 45m
2026-07-11 SKW5490 PHX → SFO Jul 11, 20:48 UTCJul 11, 22:42 UTC1h 54m
2026-07-11 SKW5684 - Jul 11, 18:20 UTCJul 11, 20:00 UTC1h 40m
2026-07-11 SKW5684 SFO → PHX Jul 11, 18:16 UTCJul 11, 19:57 UTC1h 41m
2026-07-11 SKW4632 - Jul 11, 16:25 UTCJul 11, 17:10 UTC45m
2026-07-11 SKW5626 SFO → ACV Jul 11, 04:50 UTCJul 11, 05:27 UTC37m
2026-07-11 SKW5626 - Jul 11, 04:45 UTCJul 11, 05:15 UTC30m
2026-07-11 SKW5883 MFR → SFO Jul 11, 02:15 UTCJul 11, 03:15 UTC1h 0m
2026-07-10 SKW5706 SFO → MFR Jul 10, 23:45 UTCJul 11, 00:35 UTC50m
2026-07-10 SKW4628 - Jul 10, 20:10 UTCJul 10, 22:20 UTC2h 10m
2026-07-10 SKW5401 - Jul 10, 16:35 UTCJul 10, 18:30 UTC1h 55m
2026-07-10 SKW5627 - Jul 10, 13:20 UTCJul 10, 14:05 UTC45m
2026-07-10 SKW5627 RNO → SFO Jul 10, 13:20 UTCJul 10, 14:01 UTC41m
2026-07-10 SKW5983 - Jul 10, 08:05 UTCJul 10, 08:40 UTC35m
2026-07-10 SKW5592 - Jul 10, 06:05 UTCJul 10, 06:50 UTC45m
2026-07-10 SKW5592 RDD → SFO Jul 10, 05:22 UTCJul 10, 06:47 UTC1h 25m
2026-07-10 SKW6018 - Jul 10, 04:15 UTCJul 10, 04:50 UTC35m
2026-07-10 SKW5883 MFR → SFO Jul 10, 02:05 UTCJul 10, 03:20 UTC1h 15m
2026-07-10 SKW5706 OAK → MFR Jul 10, 00:00 UTCJul 10, 00:55 UTC55m
2026-07-09 SKW5706 SFO → MFR Jul 9, 23:54 UTCJul 10, 00:48 UTC54m
2026-07-09 SKW4628 ABQ → SFO Jul 9, 20:35 UTCJul 9, 22:45 UTC2h 10m
2026-07-09 SKW4628 ABQ → SFO Jul 9, 20:37 UTCJul 9, 22:35 UTC1h 58m

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?
Mode-S AAA0FC is currently broadcasting from the ground.
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, SKW5688, SKW5724.