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sensors Mode-S transponder

A7F44D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N611UX · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
A7F44D
Octal
51772115
Decimal
11,007,053
Country
US
Tail
N611UX
Type
E75L
Transponder active on ground
Flights observed
679
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A7F44D.

Country allocation

The ICAO 24-bit address A7F44D 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
SKW5363 SkyWest Airlines 9 2026-07-22
SKW5943 SkyWest Airlines 8 2026-05-02
SKW4643 - 8 2026-07-21
SKW6046 SkyWest Airlines 7 2026-05-01
SKW5863 - 7 2026-06-27
SKW5644 - 7 2026-07-12
SKW5515 SkyWest Airlines 7 2026-07-24
SKW5384 - 7 2026-07-21
SKW5349 - 7 2026-07-02
SKW5307 SkyWest Airlines 7 2026-07-20
SKW5268 - 7 2026-07-07
SKW717C - 6 2026-07-07
SKW5857 SkyWest Airlines 6 2026-07-25
SKW5797 SkyWest Airlines 6 2026-07-25
SKW5299 SkyWest Airlines 6 2026-06-02
SKW4733 - 6 2026-07-14
SKW6052 SkyWest Airlines 5 2026-07-24
SKW6041 - 5 2026-07-22
SKW5970 - 5 2026-06-23
SKW5897 - 5 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4702 BFL → DEN Jul 26, 20:15 UTCJul 26, 21:15 UTC1h 0m
2026-07-26 SKW4671 BFL → SFO Jul 26, 18:30 UTCJul 26, 19:15 UTC45m
2026-07-26 SKW5803 SHV → IAH Jul 26, 14:55 UTCJul 26, 17:15 UTC2h 20m
2026-07-26 SKW5597 DEN → ASE Jul 26, 00:00 UTCJul 26, 01:30 UTC1h 30m
2026-07-25 SKW5578 YYZ → ORD Jul 25, 21:05 UTCJul 25, 23:00 UTC1h 55m
2026-07-25 SKW463C DEN → PSC Jul 25, 17:40 UTCJul 25, 19:50 UTC2h 10m
2026-07-25 SKW5857 BZN → ORD Jul 25, 14:25 UTCJul 25, 16:05 UTC1h 40m
2026-07-25 SKW5797 MCI → ORD Jul 25, 00:40 UTCJul 25, 02:10 UTC1h 30m
2026-07-24 SKW5515 GSP → DEN Jul 24, 19:45 UTCJul 24, 21:15 UTC1h 30m
2026-07-24 SKW5515 GSP → DEN Jul 24, 19:43 UTCJul 24, 21:28 UTC1h 45m
2026-07-24 SKW5510 LAX → SBP Jul 24, 16:35 UTCJul 24, 17:55 UTC1h 20m
2026-07-24 SKW6052 ORD → IND Jul 24, 14:05 UTCJul 24, 15:15 UTC1h 10m
2026-07-24 SKW6052 ORD → IND Jul 24, 14:00 UTCJul 24, 15:04 UTC1h 4m
2026-07-24 SKW5705 SFO → PSP Jul 24, 03:05 UTCJul 24, 04:05 UTC1h 0m
2026-07-24 SKW4786 BUR → SFO Jul 24, 00:50 UTCJul 24, 02:00 UTC1h 10m
2026-07-23 SKW5312 IAH → MSY Jul 23, 20:50 UTCJul 23, 21:50 UTC1h 0m
2026-07-23 SKW5248 MFR → SFO Jul 23, 19:05 UTCJul 23, 19:35 UTC30m
2026-07-23 SKW5372 BUR → SFO Jul 23, 16:40 UTCJul 23, 17:40 UTC1h 0m
2026-07-23 SKW5542 SDF → ORD Jul 23, 14:40 UTCJul 23, 15:00 UTC20m
2026-07-23 SKW4787 ORD → CRW Jul 23, 04:10 UTCJul 23, 05:45 UTC1h 35m
2026-07-23 SKW5630 ORD → FAR Jul 23, 01:45 UTCJul 23, 02:55 UTC1h 10m
2026-07-23 SKW5630 ORD → FAR Jul 23, 01:46 UTCJul 23, 02:53 UTC1h 7m
2026-07-22 SKW5454 - Jul 22, 20:10 UTCJul 22, 21:10 UTC1h 0m
2026-07-22 SKW6041 - Jul 22, 16:30 UTCJul 22, 18:05 UTC1h 35m
2026-07-22 SKW6041 BOI → DEN Jul 22, 16:34 UTCJul 22, 18:04 UTC1h 30m
2026-07-22 SKW5363 SYR → ORD Jul 22, 02:15 UTCJul 22, 03:50 UTC1h 35m
2026-07-22 SKW5363 SYR → ORD Jul 22, 02:15 UTCJul 22, 03:52 UTC1h 37m
2026-07-21 SKW5718 PSP → SFO Jul 21, 23:20 UTCJul 22, 00:20 UTC1h 0m
2026-07-21 SKW5548 LAX → PHX Jul 21, 20:20 UTCJul 21, 21:25 UTC1h 5m
2026-07-21 SKW5548 LAX → PHX Jul 21, 20:19 UTCJul 21, 21:18 UTC59m
2026-07-21 SKW5384 - Jul 21, 18:10 UTCJul 21, 18:40 UTC30m
2026-07-21 SKW5384 SAN → LAX Jul 21, 18:09 UTCJul 21, 18:35 UTC26m
2026-07-21 SKW4643 - Jul 21, 16:30 UTCJul 21, 17:00 UTC30m
2026-07-21 SKW4643 LAX → SAN Jul 21, 16:20 UTCJul 21, 16:58 UTC38m
2026-07-21 SKW5849 SFO → SUN Jul 21, 13:20 UTCJul 21, 14:20 UTC1h 0m
2026-07-21 SKW5458 RDM → SFO Jul 21, 05:41 UTCJul 21, 06:33 UTC52m
2026-07-21 SKW5458 RDM → SFO Jul 21, 05:30 UTCJul 21, 06:30 UTC1h 0m
2026-07-21 SKW5908 SFO → MCI Jul 21, 02:05 UTCJul 21, 03:10 UTC1h 5m
2026-07-21 SKW5908 SFO → MCI Jul 21, 01:52 UTCJul 21, 03:07 UTC1h 15m
2026-07-20 SKW380W LAX → RNO Jul 20, 23:35 UTCJul 21, 00:30 UTC55m
2026-07-20 SKW380W LAX → RNO Jul 20, 23:36 UTCJul 21, 00:25 UTC49m
2026-07-20 SKW5307 ASE → SFO Jul 20, 21:20 UTCJul 20, 22:00 UTC40m
2026-07-20 SKW5307 ASE → SFO Jul 20, 21:15 UTCJul 20, 21:55 UTC40m
2026-07-20 SKW5655 BUR → SFO Jul 20, 18:00 UTCJul 20, 19:45 UTC1h 45m
2026-07-20 SKW5295 - Jul 20, 13:15 UTCJul 20, 15:35 UTC2h 20m
2026-07-20 SKW5815 DEN → BHM Jul 20, 00:35 UTCJul 20, 03:00 UTC2h 25m
2026-07-19 SKW5393 - Jul 19, 20:50 UTCJul 19, 21:15 UTC25m
2026-07-19 SKW5393 HSV → DEN Jul 19, 20:50 UTCJul 19, 23:02 UTC2h 12m
2026-07-19 SKW5514 - Jul 19, 16:40 UTCJul 19, 19:00 UTC2h 20m
2026-07-19 SKW4660 DEN → DEN Jul 19, 01:40 UTCJul 19, 13:45 UTC12h 5m

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 N611UX page for operator, model, and routing details .

Mode-S A7F44D frequently asked

What is Mode-S code A7F44D?
A7F44D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N611UX.
Where is Mode-S A7F44D registered?
Mode-S code A7F44D 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 A7F44D broadcasting right now?
Mode-S A7F44D 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 A7F44D, octal 51772115, decimal 11,007,053.
What flights does A7F44D operate?
Mode-S A7F44D has broadcast 20 distinct callsigns, including SKW5363, SKW5943, SKW4643, SKW6046, SKW5863.