sensors Mode-S transponder

4952D2

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-TVR · AIRBUS A-320neo

Hex
4952D2
Octal
22251322
Decimal
4,805,330
Country
PT
Tail
CS-TVR
Type
A20N
Broadcasting now · callsign TAP640 · 38,000 ft
Flights observed
12
Distinct callsigns
6
Country
PT
Last broadcast
20h ago

Current position

4952D2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4952D2 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 6 distinct

Callsign Airline Flights Last seen
TAP781 - 3 2026-04-13
TAP780 TAP Portugal 3 2026-04-13
TAP93ZR - 2 2026-04-14
TAP442 - 2 2026-04-13
TAP67U - 1 2026-04-12
TAP441 TAP Portugal 1 2026-04-14

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 TAP93ZR - Apr 14, 09:10 UTCApr 14, 10:25 UTC1h 15m
2026-04-14 TAP93ZR - Apr 14, 07:55 UTCApr 14, 09:05 UTC1h 10m
2026-04-14 TAP441 ORY → LIS Apr 14, 05:15 UTCApr 14, 06:15 UTC1h 0m
2026-04-13 TAP442 - Apr 13, 19:50 UTCApr 13, 21:00 UTC1h 10m
2026-04-13 TAP442 - Apr 13, 18:50 UTCApr 13, 20:10 UTC1h 20m
2026-04-13 TAP781 - Apr 13, 16:15 UTCApr 13, 16:30 UTC15m
2026-04-13 TAP781 - Apr 13, 15:50 UTCApr 13, 16:30 UTC40m
2026-04-13 TAP781 - Apr 13, 12:25 UTCApr 13, 16:15 UTC3h 50m
2026-04-13 TAP780 LIS → ARN Apr 13, 08:20 UTCApr 13, 11:10 UTC2h 50m
2026-04-13 TAP780 LIS → ARN Apr 13, 07:55 UTCApr 13, 11:10 UTC3h 15m
2026-04-13 TAP780 LIS → ARN Apr 13, 07:20 UTCApr 13, 08:15 UTC55m
2026-04-12 TAP67U - Apr 12, 18:05 UTCApr 12, 20:15 UTC2h 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 CS-TVR page for operator, model, and routing details .

Mode-S 4952D2 frequently asked

What is Mode-S code 4952D2?
4952D2 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TVR.
Where is Mode-S 4952D2 registered?
Mode-S code 4952D2 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4952D2 broadcasting right now?
Yes. Mode-S 4952D2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4952D2, octal 22251322, decimal 4,805,330.
What flights does 4952D2 operate?
Mode-S 4952D2 has broadcast 6 distinct callsigns, including TAP781, TAP780, TAP93ZR, TAP442, TAP67U.