sensors Mode-S transponder

A80E4E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N618UX · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
A80E4E
Octal
52007116
Decimal
11,013,710
Country
US
Tail
N618UX
Type
E75L
No current signal · last broadcast 1d ago
Flights observed
8
Distinct callsigns
7
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A80E4E.

Country allocation

The ICAO 24-bit address A80E4E 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 7 distinct

Callsign Airline Flights Last seen
SKW5812 - 2 2026-04-13
SKW6025 - 1 2026-04-12
SKW5898 SkyWest Airlines 1 2026-04-13
SKW5886 - 1 2026-04-13
SKW5787 - 1 2026-04-12
SKW5267 - 1 2026-04-13
SKW4801 - 1 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 SKW4801 DEN → SLC Apr 13, 21:55 UTCApr 13, 23:05 UTC1h 10m
2026-04-13 SKW5812 - Apr 13, 19:50 UTCApr 13, 20:25 UTC35m
2026-04-13 SKW5812 - Apr 13, 18:45 UTCApr 13, 20:10 UTC1h 25m
2026-04-13 SKW5267 - Apr 13, 16:20 UTCApr 13, 17:40 UTC1h 20m
2026-04-13 SKW5898 SGF → DEN Apr 13, 13:15 UTCApr 13, 14:55 UTC1h 40m
2026-04-13 SKW5886 - Apr 13, 00:55 UTCApr 13, 02:15 UTC1h 20m
2026-04-12 SKW6025 - Apr 12, 19:40 UTCApr 12, 20:15 UTC35m
2026-04-12 SKW5787 - Apr 12, 17:15 UTCApr 12, 18:10 UTC55m

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 N618UX page for operator, model, and routing details .

Mode-S A80E4E frequently asked

What is Mode-S code A80E4E?
A80E4E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N618UX.
Where is Mode-S A80E4E registered?
Mode-S code A80E4E 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 A80E4E broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A80E4E, octal 52007116, decimal 11,013,710.
What flights does A80E4E operate?
Mode-S A80E4E has broadcast 7 distinct callsigns, including SKW5812, SKW6025, SKW5898, SKW5886, SKW5787.