sensors Mode-S transponder

A7E6CF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N608UX · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
A7E6CF
Octal
51763317
Decimal
11,003,599
Country
US
Tail
N608UX
Type
E75L
No current signal · last broadcast 1d ago
Flights observed
10
Distinct callsigns
7
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A7E6CF.

Country allocation

The ICAO 24-bit address A7E6CF 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
SKW5534 - 3 2026-04-13
SKW5767 - 2 2026-04-13
SKW6044 - 1 2026-04-13
SKW5740 - 1 2026-04-13
SKW5433 - 1 2026-04-13
SKW5425 - 1 2026-04-13
SKW4765 - 1 2026-04-12

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 SKW5767 - Apr 13, 19:50 UTCApr 13, 22:30 UTC2h 40m
2026-04-13 SKW5767 - Apr 13, 19:30 UTCApr 13, 20:10 UTC40m
2026-04-13 SKW5433 SFO → TUS Apr 13, 16:35 UTCApr 13, 18:25 UTC1h 50m
2026-04-13 SKW5740 MFR → SFO Apr 13, 13:20 UTCApr 13, 14:25 UTC1h 5m
2026-04-13 SKW6044 SFO → MFR Apr 13, 05:25 UTCApr 13, 06:20 UTC55m
2026-04-13 SKW5534 - Apr 13, 04:20 UTCApr 13, 04:25 UTC5m
2026-04-13 SKW5534 - Apr 13, 03:55 UTCApr 13, 04:25 UTC30m
2026-04-13 SKW5534 - Apr 13, 03:00 UTCApr 13, 04:15 UTC1h 15m
2026-04-13 SKW5425 SFO → RDM Apr 13, 00:55 UTCApr 13, 02:05 UTC1h 10m
2026-04-12 SKW4765 - Apr 12, 18:19 UTCApr 12, 20:55 UTC2h 36m

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 N608UX page for operator, model, and routing details .

Mode-S A7E6CF frequently asked

What is Mode-S code A7E6CF?
A7E6CF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N608UX.
Where is Mode-S A7E6CF registered?
Mode-S code A7E6CF 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 A7E6CF 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 A7E6CF, octal 51763317, decimal 11,003,599.
What flights does A7E6CF operate?
Mode-S A7E6CF has broadcast 7 distinct callsigns, including SKW5534, SKW5767, SKW6044, SKW5740, SKW5433.