Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A105E8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N165SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A105E8
Octal
50202750
Decimal
10,552,808
Country
US
Tail
N165SY
Type
E75L
No current signal · last broadcast Jul 26, 19:15 UTC
Flights observed
644
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:15 UTC

Last known position

Most recent position reported by Mode-S A105E8.

Country allocation

The ICAO 24-bit address A105E8 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
SKW5315 - 8 2026-07-16
SKW5876 - 7 2026-07-02
SKW5875 - 7 2026-07-01
SKW5837 - 7 2026-06-28
SKW5938 SkyWest Airlines 6 2026-07-24
SKW5811 - 6 2026-07-15
SKW5284 - 6 2026-06-29
SKW5924 SkyWest Airlines 5 2026-07-26
SKW5730 - 5 2026-06-27
SKW5637 - 5 2026-07-16
SKW5561 SkyWest Airlines 5 2026-07-24
SKW5381 - 5 2026-07-20
SKW5326 - 5 2026-06-25
SKW5283 - 5 2026-06-28
SKW4798 SkyWest Airlines 5 2026-06-09
SKW5941 SkyWest Airlines 4 2026-05-27
SKW5787 SkyWest Airlines 4 2026-04-17
SKW5756 - 4 2026-07-20
SKW5699 - 4 2026-06-26
SKW5654 SkyWest Airlines 4 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5834 ABQ → DEN Jul 26, 18:10 UTCJul 26, 19:10 UTC1h 0m
2026-07-26 SKW5487 ORD → MEM Jul 26, 14:25 UTCJul 26, 15:20 UTC55m
2026-07-26 SKW5924 FCA → DEN Jul 26, 11:45 UTCJul 26, 13:10 UTC1h 25m
2026-07-26 SKW5924 FCA → DEN Jul 26, 11:46 UTCJul 26, 13:09 UTC1h 23m
2026-07-26 SKW5387 MTY → ORD Jul 26, 01:50 UTCJul 26, 03:00 UTC1h 10m
2026-07-25 SKW5946 SLP → IAH Jul 25, 23:40 UTCJul 26, 00:35 UTC55m
2026-07-25 SKW5946 SLP → IAH Jul 25, 23:44 UTCJul 26, 00:39 UTC55m
2026-07-25 SKW5212 LGA → ORD Jul 25, 19:40 UTCJul 25, 20:45 UTC1h 5m
2026-07-25 SKW5212 LGA → ORD Jul 25, 19:36 UTCJul 25, 20:50 UTC1h 14m
2026-07-25 SKW5562 SCE → ORD Jul 25, 17:40 UTCJul 25, 18:50 UTC1h 10m
2026-07-25 SKW5562 SCE → ORD Jul 25, 17:28 UTCJul 25, 18:41 UTC1h 13m
2026-07-25 SKW5236 SBP → SFO Jul 25, 14:35 UTCJul 25, 15:50 UTC1h 15m
2026-07-25 SKW5549 RDD → SFO Jul 25, 12:25 UTCJul 25, 13:10 UTC45m
2026-07-25 SKW5549 RDD → SFO Jul 25, 12:32 UTCJul 25, 13:08 UTC36m
2026-07-25 SKW5724 SFO → RDD Jul 25, 06:18 UTCJul 25, 06:40 UTC22m
2026-07-25 SKW5724 SFO → RDD Jul 25, 06:10 UTCJul 25, 06:45 UTC35m
2026-07-25 SKW5339 SAV → ORD Jul 25, 02:50 UTCJul 25, 04:00 UTC1h 10m
2026-07-25 SKW5650 SFO → SNA Jul 25, 00:50 UTCJul 25, 02:00 UTC1h 10m
2026-07-24 SKW5938 FCA → SFO Jul 24, 22:05 UTCJul 24, 23:15 UTC1h 10m
2026-07-24 SKW4757 ORD → ASE Jul 24, 17:50 UTCJul 24, 20:20 UTC2h 30m
2026-07-24 SKW4757 ORD → ASE Jul 24, 17:39 UTCJul 24, 20:25 UTC2h 46m
2026-07-24 SKW5561 FAT → SFO Jul 24, 13:50 UTCJul 24, 15:40 UTC1h 50m
2026-07-24 SKW5561 FAT → SFO Jul 24, 14:00 UTCJul 24, 15:42 UTC1h 42m
2026-07-24 SKW5396 BUR → SFO Jul 24, 00:05 UTCJul 24, 00:45 UTC40m
2026-07-23 SKW5376 ERI → ORD Jul 23, 20:50 UTCJul 23, 21:55 UTC1h 5m
2026-07-23 SKW5692 CID → DEN Jul 23, 18:25 UTCJul 23, 19:35 UTC1h 10m
2026-07-23 SKW5901 ORD → FAR Jul 23, 15:00 UTCJul 23, 16:50 UTC1h 50m
2026-07-23 SKW5477 MBS → ORD Jul 23, 12:00 UTCJul 23, 13:45 UTC1h 45m
2026-07-23 SKW5615 ORD → GRB Jul 23, 09:35 UTCJul 23, 10:10 UTC35m
2026-07-22 SKW5727 ORD → YYZ Jul 22, 22:15 UTCJul 22, 22:45 UTC30m
2026-07-22 SKW6019 - Jul 22, 19:05 UTCJul 22, 20:25 UTC1h 20m
2026-07-22 SKW5836 ORD → CMH Jul 22, 16:05 UTCJul 22, 17:10 UTC1h 5m
2026-07-22 SKW5790 ORD → CRW Jul 22, 12:00 UTCJul 22, 14:00 UTC2h 0m
2026-07-22 SKW4638 BFL → SFO Jul 22, 01:35 UTCJul 22, 03:40 UTC2h 5m
2026-07-21 SKW4732 ASE → IAH Jul 21, 21:15 UTCJul 22, 00:00 UTC2h 45m
2026-07-21 SKW5424 DEN → TUS Jul 21, 17:35 UTCJul 21, 19:35 UTC2h 0m
2026-07-21 SKW5572 CVG → ORD Jul 21, 14:37 UTCJul 21, 15:11 UTC34m
2026-07-21 SKW5572 CVG → ORD Jul 21, 14:35 UTCJul 21, 15:20 UTC45m
2026-07-21 SKW5958 DTW → ORD Jul 21, 12:45 UTCJul 21, 13:30 UTC45m
2026-07-20 SKW5588 - Jul 20, 23:55 UTCJul 21, 01:05 UTC1h 10m
2026-07-20 SKW5588 PIT → ORD Jul 20, 23:56 UTCJul 21, 00:51 UTC55m
2026-07-20 SKW5584 ORD → ABE Jul 20, 21:40 UTCJul 20, 22:45 UTC1h 5m
2026-07-20 SKW5381 - Jul 20, 18:35 UTCJul 20, 19:25 UTC50m
2026-07-20 SKW5756 - Jul 20, 16:35 UTCJul 20, 17:25 UTC50m
2026-07-20 SKW4664 - Jul 20, 12:55 UTCJul 20, 15:15 UTC2h 20m
2026-07-19 SKW4791 ORD → BDL Jul 19, 20:37 UTCJul 19, 22:04 UTC1h 27m
2026-07-19 SKW4791 - Jul 19, 20:20 UTCJul 19, 22:05 UTC1h 45m
2026-07-19 SKW5517 LAX → MFR Jul 19, 17:25 UTCJul 19, 18:10 UTC45m
2026-07-19 SKW5668 ORD → DCA Jul 19, 14:30 UTCJul 19, 14:55 UTC25m
2026-07-19 SKW4667 BHM → ORD Jul 19, 10:25 UTCJul 19, 13:15 UTC2h 50m

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 N165SY page for operator, model, and routing details .

Mode-S A105E8 frequently asked

What is Mode-S code A105E8?
A105E8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N165SY.
Where is Mode-S A105E8 registered?
Mode-S code A105E8 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 A105E8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A105E8, octal 50202750, decimal 10,552,808.
What flights does A105E8 operate?
Mode-S A105E8 has broadcast 20 distinct callsigns, including SKW5315, SKW5876, SKW5875, SKW5837, SKW5938.