sensors Mode-S transponder

4C8090

ICAO 24-bit transponder address · allocated to Cyprus

Currently assigned to 5B-DDR · AIRBUS A-320

Hex
4C8090
Octal
23100220
Decimal
5,013,648
Country
CY
Tail
5B-DDR
Type
A320
No current signal · last broadcast 16h ago
Flights observed
9
Distinct callsigns
4
Country
CY
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 4C8090.

Country allocation

The ICAO 24-bit address 4C8090 falls within the block assigned to Cyprus (CY) by ICAO Annex 10, Volume III. Every aircraft registered in Cyprus 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 4 distinct

Callsign Airline Flights Last seen
CYP38P - 3 2026-04-13
CYP381 - 3 2026-04-13
CYP311 Cyprus Airways 2 2026-04-14
CYP31A Cyprus Airways 1 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 CYP311 ATH → LCA Apr 14, 09:10 UTCApr 14, 09:45 UTC35m
2026-04-14 CYP311 ATH → LCA Apr 14, 08:30 UTCApr 14, 09:05 UTC35m
2026-04-14 CYP31A LCA → ATH Apr 14, 05:15 UTCApr 14, 06:50 UTC1h 35m
2026-04-13 CYP381 - Apr 13, 12:20 UTCApr 13, 15:30 UTC3h 10m
2026-04-13 CYP381 - Apr 13, 11:55 UTCApr 13, 15:30 UTC3h 35m
2026-04-13 CYP381 - Apr 13, 11:30 UTCApr 13, 12:15 UTC45m
2026-04-13 CYP38P - Apr 13, 08:20 UTCApr 13, 09:10 UTC50m
2026-04-13 CYP38P - Apr 13, 07:55 UTCApr 13, 09:10 UTC1h 15m
2026-04-13 CYP38P - Apr 13, 05:05 UTCApr 13, 08:15 UTC3h 10m

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 5B-DDR page for operator, model, and routing details .

Mode-S 4C8090 frequently asked

What is Mode-S code 4C8090?
4C8090 is an ICAO 24-bit transponder address. Allocated to Cyprus. Assigned to 5B-DDR.
Where is Mode-S 4C8090 registered?
Mode-S code 4C8090 is allocated to Cyprus (CY). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4C8090 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4C8090, octal 23100220, decimal 5,013,648.
What flights does 4C8090 operate?
Mode-S 4C8090 has broadcast 4 distinct callsigns, including CYP38P, CYP381, CYP311, CYP31A.