sensors Mode-S transponder

495066

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-TCF · AIRBUS A-330-900

Hex
495066
Octal
22250146
Decimal
4,804,710
Country
PT
Tail
CS-TCF
Type
A339
No current signal · last broadcast 14h ago
Flights observed
11
Distinct callsigns
5
Country
PT
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 495066.

Country allocation

The ICAO 24-bit address 495066 falls within the block assigned to Portugal (PT) by ICAO Annex 10, Volume III. Every aircraft registered in Portugal 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 5 distinct

Callsign Airline Flights Last seen
OBS851 - 4 2026-04-13
OBS864 Orbest 3 2026-04-13
OBS852 - 2 2026-04-14
OBS863 - 1 2026-04-13
OBS125P - 1 2026-04-14

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 OBS125P - Apr 14, 10:45 UTCApr 14, 11:05 UTC20m
2026-04-14 OBS852 - Apr 14, 07:30 UTCApr 14, 08:10 UTC40m
2026-04-14 OBS852 - Apr 14, 06:15 UTCApr 14, 06:25 UTC10m
2026-04-13 OBS851 - Apr 13, 22:05 UTCApr 13, 22:45 UTC40m
2026-04-13 OBS851 - Apr 13, 16:15 UTCApr 13, 16:30 UTC15m
2026-04-13 OBS851 - Apr 13, 15:50 UTCApr 13, 16:30 UTC40m
2026-04-13 OBS851 - Apr 13, 15:00 UTCApr 13, 16:15 UTC1h 15m
2026-04-13 OBS864 CUN → LIS Apr 13, 10:35 UTCApr 13, 11:10 UTC35m
2026-04-13 OBS864 CUN → LIS Apr 13, 03:55 UTCApr 13, 04:20 UTC25m
2026-04-13 OBS864 CUN → LIS Apr 13, 03:30 UTCApr 13, 04:15 UTC45m
2026-04-13 OBS863 - Apr 13, 00:20 UTCApr 13, 00:30 UTC10m

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 CS-TCF page for operator, model, and routing details .

Mode-S 495066 frequently asked

What is Mode-S code 495066?
495066 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TCF.
Where is Mode-S 495066 registered?
Mode-S code 495066 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 495066 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 495066, octal 22250146, decimal 4,804,710.
What flights does 495066 operate?
Mode-S 495066 has broadcast 5 distinct callsigns, including OBS851, OBS864, OBS852, OBS863, OBS125P.