Apparatus

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sensors Mode-S transponder

A7EA86

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N609UX · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
A7EA86
Octal
51765206
Decimal
11,004,550
Country
US
Tail
N609UX
Type
E75L
No current signal · last broadcast Jul 26, 21:00 UTC
Flights observed
703
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:00 UTC

Last known position

Most recent position reported by Mode-S A7EA86.

Country allocation

The ICAO 24-bit address A7EA86 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
SKW5386 - 11 2026-06-28
SKW5394 - 10 2026-07-04
SKW6046 SkyWest Airlines 8 2026-05-18
SKW5728 SkyWest Airlines 8 2026-06-16
SKW5328 - 8 2026-07-04
SKW5542 SkyWest Airlines 7 2026-07-25
SKW5507 SkyWest Airlines 7 2026-06-10
SKW5467 - 7 2026-06-18
SKW5363 SkyWest Airlines 7 2026-07-24
SKW5290 - 7 2026-06-28
SKW4678 SkyWest Airlines 7 2026-06-18
SKW5630 SkyWest Airlines 6 2026-06-02
SKW5464 SkyWest Airlines 6 2026-07-25
SKW5393 - 6 2026-07-09
SKW5369 - 6 2026-07-06
SKW5248 SkyWest Airlines 6 2026-07-24
SKW4708 - 6 2026-07-11
SKW4639 SkyWest Airlines 6 2026-04-30
SKW5970 SkyWest Airlines 5 2026-05-18
SKW5968 - 5 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4720 MSN → ORD Jul 26, 19:20 UTCJul 26, 21:00 UTC1h 40m
2026-07-26 SKW5605 MRY → SFO Jul 26, 16:35 UTCJul 26, 18:00 UTC1h 25m
2026-07-26 SKW5605 MRY → SFO Jul 26, 16:38 UTCJul 26, 17:53 UTC1h 15m
2026-07-26 SKW5738 OMA → SFO Jul 26, 13:20 UTCJul 26, 15:00 UTC1h 40m
2026-07-26 SKW5708 ORD → PWM Jul 26, 06:20 UTCJul 26, 07:55 UTC1h 36m
2026-07-26 SKW5704 ORD → DTW Jul 26, 04:25 UTCJul 26, 05:25 UTC1h 0m
2026-07-26 SKW5704 ORD → DTW Jul 26, 04:05 UTCJul 26, 05:20 UTC1h 15m
2026-07-26 SKW5962 SJC → DEN Jul 26, 01:55 UTCJul 26, 02:45 UTC50m
2026-07-26 SKW5962 SJC → DEN Jul 26, 02:03 UTCJul 26, 02:40 UTC37m
2026-07-25 SKW5256 SFO → GEG Jul 25, 23:35 UTCJul 26, 00:20 UTC45m
2026-07-25 SKW5464 RDM → SFO Jul 25, 21:10 UTCJul 25, 22:00 UTC50m
2026-07-25 SKW5899 RNO → SFO Jul 25, 19:10 UTCJul 25, 20:05 UTC55m
2026-07-25 SKW5899 RNO → SFO Jul 25, 19:00 UTCJul 25, 19:57 UTC57m
2026-07-25 SKW5410 PSP → SFO Jul 25, 16:45 UTCJul 25, 17:40 UTC55m
2026-07-25 SKW5542 SDF → ORD Jul 25, 14:50 UTCJul 25, 15:15 UTC25m
2026-07-25 SKW5542 SDF → ORD Jul 25, 14:31 UTCJul 25, 15:07 UTC36m
2026-07-25 SKW5705 SFO → PSP Jul 25, 02:05 UTCJul 25, 03:05 UTC1h 0m
2026-07-25 SKW4786 BUR → SFO Jul 25, 00:10 UTCJul 25, 01:15 UTC1h 5m
2026-07-24 SKW5312 IAH → MSY Jul 24, 21:35 UTCJul 24, 22:40 UTC1h 5m
2026-07-24 SKW5312 IAH → MSY Jul 24, 21:04 UTCJul 24, 22:27 UTC1h 23m
2026-07-24 SKW5248 MFR → SFO Jul 24, 19:25 UTCJul 24, 20:10 UTC45m
2026-07-24 SKW5372 BUR → SFO Jul 24, 16:45 UTCJul 24, 17:45 UTC1h 0m
2026-07-24 SKW5372 BUR → SFO Jul 24, 16:40 UTCJul 24, 17:42 UTC1h 2m
2026-07-24 SKW4730 - Jul 24, 13:10 UTCJul 24, 15:10 UTC2h 0m
2026-07-24 SKW5363 SYR → ORD Jul 24, 02:20 UTCJul 24, 03:55 UTC1h 35m
2026-07-24 SKW5363 SYR → ORD Jul 24, 02:15 UTCJul 24, 03:54 UTC1h 39m
2026-07-23 SKW5456 SFO → FCA Jul 23, 22:55 UTCJul 24, 00:30 UTC1h 35m
2026-07-23 SKW5456 SFO → FCA Jul 23, 22:59 UTCJul 24, 00:19 UTC1h 20m
2026-07-23 SKW5371 FAR → ORD Jul 23, 20:20 UTCJul 23, 21:45 UTC1h 25m
2026-07-23 SKW5384 ORD → TUL Jul 23, 18:35 UTCJul 23, 19:00 UTC25m
2026-07-23 SKW4643 - Jul 23, 16:50 UTCJul 23, 17:20 UTC30m
2026-07-23 SKW4642 BIS → DEN Jul 23, 11:20 UTCJul 23, 14:00 UTC2h 40m
2026-07-23 SKW418W LAX → AUS Jul 23, 02:05 UTCJul 23, 04:50 UTC2h 45m
2026-07-22 SKW5489 ASE → SFO Jul 22, 22:00 UTCJul 23, 01:05 UTC3h 5m
2026-07-22 SKW5426 - Jul 22, 18:05 UTCJul 22, 20:55 UTC2h 50m
2026-07-22 SKW5426 LAX → MCI Jul 22, 17:35 UTCJul 22, 20:58 UTC3h 23m
2026-07-22 SKW5897 - Jul 22, 13:15 UTCJul 22, 14:00 UTC45m
2026-07-22 SKW5636 SJC → DEN Jul 22, 03:45 UTCJul 22, 04:15 UTC30m
2026-07-22 SKW5415 ICT → DEN Jul 22, 02:10 UTCJul 22, 02:45 UTC35m
2026-07-21 SKW5709 RNO → SFO Jul 21, 23:30 UTCJul 22, 00:50 UTC1h 20m
2026-07-21 SKW5459 - Jul 21, 20:35 UTCJul 21, 21:45 UTC1h 10m
2026-07-21 SKW4642 - Jul 21, 17:00 UTCJul 21, 19:35 UTC2h 35m
2026-07-21 SKW418W LAX → AUS Jul 21, 01:55 UTCJul 21, 05:00 UTC3h 5m
2026-07-21 SKW5542 SDF → ORD Jul 21, 00:10 UTCJul 21, 00:30 UTC20m
2026-07-20 SKW5705 - Jul 20, 02:00 UTCJul 20, 03:00 UTC1h 0m
2026-07-19 SKW4786 - Jul 19, 23:50 UTCJul 20, 00:55 UTC1h 5m
2026-07-19 SKW4786 PSP → SFO Jul 19, 23:33 UTCJul 20, 00:52 UTC1h 19m
2026-07-19 SKW5312 IAH → MSY Jul 19, 21:30 UTCJul 19, 22:30 UTC1h 0m
2026-07-19 SKW5248 MFR → SFO Jul 19, 19:50 UTCJul 19, 20:25 UTC35m
2026-07-19 SKW5248 MFR → SFO Jul 19, 19:04 UTCJul 19, 20:17 UTC1h 13m

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 N609UX page for operator, model, and routing details .

Mode-S A7EA86 frequently asked

What is Mode-S code A7EA86?
A7EA86 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N609UX.
Where is Mode-S A7EA86 registered?
Mode-S code A7EA86 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 A7EA86 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7EA86, octal 51765206, decimal 11,004,550.
What flights does A7EA86 operate?
Mode-S A7EA86 has broadcast 20 distinct callsigns, including SKW5386, SKW5394, SKW6046, SKW5728, SKW5328.