Apparatus

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sensors Mode-S transponder

A84A7B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N633SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A84A7B
Octal
52045173
Decimal
11,029,115
Country
US
Tail
N633SK
Type
CRJ7
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
816
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S A84A7B.

Country allocation

The ICAO 24-bit address A84A7B 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
SKW6433 SkyWest Airlines 12 2026-07-23
SKW6344 - 11 2026-07-13
SKW6446 SkyWest Airlines 10 2026-04-25
SKW6384 SkyWest Airlines 9 2026-07-17
SKW6295 - 9 2026-07-14
SKW6256 - 9 2026-07-10
SKW6235 - 8 2026-06-16
SKW6206 - 8 2026-06-28
SKW6204 SkyWest Airlines 8 2026-07-23
SKW4980 SkyWest Airlines 8 2026-06-03
SKW4923 - 8 2026-07-11
SKW4894 - 8 2026-07-10
SKW6465 SkyWest Airlines 7 2026-05-04
SKW6419 SkyWest Airlines 7 2026-05-02
SKW6373 SkyWest Airlines 7 2026-06-28
SKW6317 SkyWest Airlines 7 2026-06-11
SKW6219 SkyWest Airlines 7 2026-06-17
SKW6194 - 7 2026-07-14
SKW4930 - 7 2026-07-15
SKW4907 - 7 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW6218 DTW → ORD Jul 26, 22:10 UTCJul 26, 22:45 UTC35m
2026-07-26 SKW4949 ORD → PIA Jul 26, 18:45 UTCJul 26, 19:40 UTC55m
2026-07-26 SKW4949 ORD → PIA Jul 26, 17:05 UTCJul 26, 17:50 UTC45m
2026-07-26 SKW4953 DFW → SWO Jul 26, 14:40 UTCJul 26, 15:35 UTC55m
2026-07-26 SKW4953 DFW → SWO Jul 26, 14:40 UTCJul 26, 15:31 UTC51m
2026-07-26 SKW4953 DFW → SWO Jul 26, 12:30 UTCJul 26, 13:20 UTC50m
2026-07-26 SKW6207 SFO → LAX Jul 26, 10:00 UTCJul 26, 10:45 UTC45m
2026-07-26 SKW6193 OKC → LAX Jul 26, 04:15 UTCJul 26, 04:40 UTC25m
2026-07-26 SKW6193 OKC → LAX Jul 26, 04:11 UTCJul 26, 04:37 UTC26m
2026-07-26 SKW6285 LAX → SLC Jul 26, 01:05 UTCJul 26, 02:45 UTC1h 40m
2026-07-25 SKW6285 LAX → SLC Jul 25, 21:35 UTCJul 25, 23:05 UTC1h 30m
2026-07-25 SKW6249 PHX → GJT Jul 25, 18:55 UTCJul 25, 20:05 UTC1h 10m
2026-07-25 SKW6249 PHX → GJT Jul 25, 16:35 UTCJul 25, 17:30 UTC55m
2026-07-25 SKW240Y - Jul 25, 14:25 UTCJul 25, 15:20 UTC55m
2026-07-24 SKW6352 ORD → HSV Jul 24, 22:45 UTCJul 24, 23:30 UTC45m
2026-07-24 SKW4964 BNA → ORD Jul 24, 12:30 UTCJul 24, 13:45 UTC1h 15m
2026-07-24 SKW4964 BNA → ORD Jul 24, 12:28 UTCJul 24, 13:43 UTC1h 15m
2026-07-24 SKW6326 MRY → PHX Jul 24, 01:05 UTCJul 24, 02:05 UTC1h 0m
2026-07-23 SKW4990 SBP → PHX Jul 23, 21:50 UTCJul 23, 23:15 UTC1h 25m
2026-07-23 SKW4990 SBP → PHX Jul 23, 19:35 UTCJul 23, 20:55 UTC1h 20m
2026-07-23 SKW6204 ORD → STL Jul 23, 16:10 UTCJul 23, 17:50 UTC1h 40m
2026-07-23 SKW6204 ORD → STL Jul 23, 13:35 UTCJul 23, 15:15 UTC1h 40m
2026-07-23 SKW6464 - Jul 23, 10:25 UTCJul 23, 12:00 UTC1h 35m
2026-07-23 SKW6464 HSV → ORD Jul 23, 10:23 UTCJul 23, 11:55 UTC1h 32m
2026-07-23 SKW6426 PHX → SBA Jul 23, 04:05 UTCJul 23, 05:10 UTC1h 5m
2026-07-23 SKW6433 PHX → BFL Jul 23, 00:05 UTCJul 23, 02:20 UTC2h 15m
2026-07-23 SKW6433 PHX → BFL Jul 23, 00:04 UTCJul 23, 01:38 UTC1h 34m
2026-07-22 SKW6433 PHX → BFL Jul 22, 21:35 UTCJul 22, 23:05 UTC1h 30m
2026-07-22 SKW5004 ORD → SPI Jul 22, 17:30 UTCJul 22, 19:40 UTC2h 10m
2026-07-22 SKW5004 ORD → SPI Jul 22, 14:55 UTCJul 22, 16:20 UTC1h 25m
2026-07-22 SKW6216 GUC → DFW Jul 22, 11:25 UTCJul 22, 12:50 UTC1h 25m
2026-07-22 SKW5001 SPI → ORD Jul 22, 00:30 UTCJul 22, 01:50 UTC1h 20m
2026-07-21 SKW6200 - Jul 21, 21:20 UTCJul 21, 23:15 UTC1h 55m
2026-07-21 SKW6200 - Jul 21, 19:10 UTCJul 21, 20:15 UTC1h 5m
2026-07-21 SKW6445 LAX → RNO Jul 21, 15:55 UTCJul 21, 17:40 UTC1h 45m
2026-07-21 SKW6445 LAX → RNO Jul 21, 15:47 UTCJul 21, 17:21 UTC1h 34m
2026-07-21 SKW6445 LAX → RNO Jul 21, 13:25 UTCJul 21, 14:30 UTC1h 5m
2026-07-21 SKW6464 - Jul 21, 10:10 UTCJul 21, 11:45 UTC1h 35m
2026-07-21 SKW6426 PHX → SBA Jul 21, 03:50 UTCJul 21, 04:55 UTC1h 5m
2026-07-21 SKW6426 PHX → SBA Jul 21, 03:53 UTCJul 21, 04:52 UTC59m
2026-07-21 SKW6433 PHX → BFL Jul 21, 00:30 UTCJul 21, 02:30 UTC2h 0m
2026-07-20 SKW6433 PHX → BFL Jul 20, 22:10 UTCJul 20, 23:35 UTC1h 25m
2026-07-20 SKW4831 - Jul 20, 17:40 UTCJul 20, 19:00 UTC1h 20m
2026-07-20 SKW4828 - Jul 20, 15:45 UTCJul 20, 16:25 UTC40m
2026-07-20 SKW6450 - Jul 20, 12:20 UTCJul 20, 14:10 UTC1h 50m
2026-07-20 SKW6450 SHV → CLT Jul 20, 12:15 UTCJul 20, 14:09 UTC1h 54m
2026-07-20 SKW6412 - Jul 20, 03:05 UTCJul 20, 04:50 UTC1h 45m
2026-07-20 SKW6439 OKC → LAX Jul 20, 00:30 UTCJul 20, 00:45 UTC15m
2026-07-20 SKW6439 OKC → LAX Jul 20, 00:26 UTCJul 20, 01:04 UTC38m
2026-07-19 SKW6439 OKC → LAX Jul 19, 22:55 UTCJul 19, 23:25 UTC30m

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 N633SK page for operator, model, and routing details .

Mode-S A84A7B frequently asked

What is Mode-S code A84A7B?
A84A7B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N633SK.
Where is Mode-S A84A7B registered?
Mode-S code A84A7B 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 A84A7B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84A7B, octal 52045173, decimal 11,029,115.
What flights does A84A7B operate?
Mode-S A84A7B has broadcast 20 distinct callsigns, including SKW6433, SKW6344, SKW6446, SKW6384, SKW6295.