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sensors Mode-S transponder

A018EE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N105SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A018EE
Octal
50014356
Decimal
10,492,142
Country
US
Tail
N105SY
Type
E75L
No current signal · last broadcast Jul 26, 20:30 UTC
Flights observed
663
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:30 UTC

Last known position

Most recent position reported by Mode-S A018EE.

Country allocation

The ICAO 24-bit address A018EE 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
SKW5745 - 14 2026-07-19
SKW5560 SkyWest Airlines 14 2026-07-19
SKW5854 SkyWest Airlines 13 2026-07-19
SKW5300 - 13 2026-06-22
SKW5503 SkyWest Airlines 12 2026-06-04
SKW5444 SkyWest Airlines 11 2026-07-24
SKW5769 SkyWest Airlines 10 2026-07-24
SKW5787 SkyWest Airlines 9 2026-07-23
SKW5642 SkyWest Airlines 9 2026-07-26
SKW5329 - 9 2026-07-23
SKW4700 - 9 2026-07-15
SKW5774 SkyWest Airlines 8 2026-07-24
SKW5674 SkyWest Airlines 8 2026-04-24
SKW5493 - 8 2026-06-21
SKW5945 SkyWest Airlines 7 2026-04-27
SKW5771 SkyWest Airlines 7 2026-07-22
SKW5759 - 7 2026-07-14
SKW5697 - 7 2026-07-11
SKW5646 SkyWest Airlines 7 2026-07-26
SKW5607 - 7 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5506 SFO → ASE Jul 26, 18:15 UTCJul 26, 20:30 UTC2h 15m
2026-07-26 SKW5642 TUS → ORD Jul 26, 14:40 UTCJul 26, 15:45 UTC1h 5m
2026-07-26 SKW5646 ORD → MSN Jul 26, 04:30 UTCJul 26, 04:40 UTC10m
2026-07-26 SKW5646 ORD → MSN Jul 26, 03:40 UTCJul 26, 04:00 UTC20m
2026-07-26 SKW5646 ORD → MSN Jul 26, 03:30 UTCJul 26, 04:40 UTC1h 10m
2026-07-26 SKW5620 ORD → ABE Jul 26, 00:35 UTCJul 26, 01:25 UTC50m
2026-07-25 SKW5294 SAN → SFO Jul 25, 22:35 UTCJul 25, 23:15 UTC40m
2026-07-25 SKW5812 SFO → BUR Jul 25, 18:50 UTCJul 25, 20:20 UTC1h 30m
2026-07-25 SKW5267 DEN → XNA Jul 25, 16:15 UTCJul 25, 17:35 UTC1h 20m
2026-07-25 SKW5712 GEG → SFO Jul 25, 13:25 UTCJul 25, 14:35 UTC1h 10m
2026-07-25 SKW5734 ERI → ORD Jul 25, 02:20 UTCJul 25, 03:30 UTC1h 10m
2026-07-24 SKW5778 ASE → DEN Jul 24, 23:25 UTCJul 24, 23:45 UTC20m
2026-07-24 SKW5773 BNA → ORD Jul 24, 21:25 UTCJul 24, 21:40 UTC15m
2026-07-24 SKW5774 ASE → DEN Jul 24, 19:45 UTCJul 24, 20:10 UTC25m
2026-07-24 SKW5769 XNA → ORD Jul 24, 18:05 UTCJul 24, 18:20 UTC15m
2026-07-24 SKW5770 ASE → DEN Jul 24, 15:50 UTCJul 24, 16:10 UTC20m
2026-07-24 SKW5444 SFO → PHX Jul 24, 14:00 UTCJul 24, 14:15 UTC15m
2026-07-24 SKW5444 SFO → PHX Jul 24, 14:04 UTCJul 24, 14:25 UTC21m
2026-07-24 SKW4716 SAN → SFO Jul 24, 10:50 UTCJul 24, 12:40 UTC1h 50m
2026-07-24 SKW4773 ORD → DTW Jul 24, 04:30 UTCJul 24, 06:00 UTC1h 30m
2026-07-24 SKW4773 ORD → DTW Jul 24, 04:13 UTCJul 24, 05:57 UTC1h 44m
2026-07-24 SKW5694 GRB → ORD Jul 24, 00:40 UTCJul 24, 03:10 UTC2h 30m
2026-07-24 SKW5694 GRB → ORD Jul 24, 00:53 UTCJul 24, 03:19 UTC2h 26m
2026-07-23 SKW5641 SJC → DEN Jul 23, 19:45 UTCJul 23, 21:05 UTC1h 20m
2026-07-23 SKW5787 FAT → DEN Jul 23, 16:20 UTCJul 23, 18:10 UTC1h 50m
2026-07-23 SKW5787 FAT → DEN Jul 23, 16:18 UTCJul 23, 18:08 UTC1h 50m
2026-07-23 SKW5329 - Jul 23, 04:45 UTCJul 23, 05:25 UTC40m
2026-07-23 SKW5329 LAX → FAT Jul 23, 04:52 UTCJul 23, 05:23 UTC31m
2026-07-22 SKW6085 ORD → SBN Jul 22, 23:40 UTCJul 23, 01:15 UTC1h 35m
2026-07-22 SKW5771 RDM → DEN Jul 22, 20:05 UTCJul 22, 20:25 UTC20m
2026-07-22 SKW5520 OKC → IAH Jul 22, 16:07 UTCJul 22, 17:51 UTC1h 44m
2026-07-22 SKW5520 OKC → IAH Jul 22, 16:05 UTCJul 22, 17:30 UTC1h 25m
2026-07-22 SKW5529 LAX → RDD Jul 22, 02:00 UTCJul 22, 03:55 UTC1h 55m
2026-07-21 SKW5914 LNK → ORD Jul 21, 22:20 UTCJul 21, 23:40 UTC1h 20m
2026-07-21 SKW5311 ORD → DCA Jul 21, 20:00 UTCJul 21, 21:15 UTC1h 15m
2026-07-21 SKW5787 FAT → DEN Jul 21, 16:10 UTCJul 21, 18:05 UTC1h 55m
2026-07-21 SKW5329 - Jul 21, 06:55 UTCJul 21, 07:30 UTC35m
2026-07-21 SKW5198 IAH → MBS Jul 21, 04:15 UTCJul 21, 06:05 UTC1h 50m
2026-07-21 SKW5198 IAH → MBS Jul 21, 04:02 UTCJul 21, 05:59 UTC1h 57m
2026-07-21 SKW5775 DEN → DEN Jul 21, 02:10 UTCJul 21, 03:00 UTC50m
2026-07-20 SKW5776 JAC → SFO Jul 20, 23:50 UTCJul 21, 00:20 UTC30m
2026-07-20 SKW5771 RDM → DEN Jul 20, 21:50 UTCJul 20, 22:24 UTC34m
2026-07-20 SKW5771 RDM → DEN Jul 20, 21:45 UTCJul 20, 22:15 UTC30m
2026-07-20 SKW5772 - Jul 20, 19:25 UTCJul 20, 19:45 UTC20m
2026-07-20 SKW5782 - Jul 20, 17:40 UTCJul 20, 17:55 UTC15m
2026-07-20 SKW5782 DEN → ASE Jul 20, 16:11 UTCJul 20, 18:11 UTC2h 0m
2026-07-20 SKW5766 - Jul 20, 14:00 UTCJul 20, 14:25 UTC25m
2026-07-20 SKW5766 ASE → DEN Jul 20, 13:58 UTCJul 20, 14:24 UTC26m
2026-07-19 SKW5711 PHL → ORD Jul 19, 23:45 UTCJul 20, 01:25 UTC1h 40m
2026-07-19 SKW5560 ORD → CMH Jul 19, 21:45 UTCJul 19, 22:15 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 N105SY page for operator, model, and routing details .

Mode-S A018EE frequently asked

What is Mode-S code A018EE?
A018EE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N105SY.
Where is Mode-S A018EE registered?
Mode-S code A018EE 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 A018EE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A018EE, octal 50014356, decimal 10,492,142.
What flights does A018EE operate?
Mode-S A018EE has broadcast 20 distinct callsigns, including SKW5745, SKW5560, SKW5854, SKW5300, SKW5503.