Apparatus

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sensors Mode-S transponder

4952A1

ICAO 24-bit transponder address · allocated to Portugal

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

Hex
4952A1
Octal
22251241
Decimal
4,805,281
Country
PT
Tail
CS-TUA
Type
A339
Broadcasting now · callsign TAP296 · 40,000 ft
Flights observed
96
Distinct callsigns
20
Country
PT
Last broadcast
45m ago

Current position

4952A1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4952A1 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 20 distinct

Callsign Airline Flights Last seen
TAP104 TAP Portugal 8 2026-05-27
TAP224 TAP Portugal 7 2026-05-18
TAP082 TAP Portugal 7 2026-05-16
TAP22MI TAP Portugal 6 2026-05-18
TAP089 TAP Portugal 6 2026-05-28
TAP088 TAP Portugal 6 2026-05-29
TAP072 TAP Portugal 6 2026-05-06
TAP282 TAP Portugal 4 2026-05-23
TAP087 TAP Portugal 4 2026-05-15
TAP084 TAP Portugal 4 2026-05-15
TAP281 TAP Portugal 3 2026-05-22
TAP028 TAP Portugal 3 2026-05-05
TAP89WT TAP Portugal 2 2026-05-20
TAP3178 - 2 2026-04-25
TAP244 TAP Portugal 2 2026-04-26
TAP243U TAP Portugal 2 2026-04-26
TAP236 TAP Portugal 2 2026-05-08
TAP210 TAP Portugal 2 2026-05-06
TAP209K TAP Portugal 2 2026-05-05
TAP103 TAP Portugal 2 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 TAP296 - May 29, 22:15 UTCMay 30, 04:15 UTC6h 0m
2026-05-29 TAP295 - May 29, 13:00 UTCMay 29, 20:00 UTC7h 0m
2026-05-29 TAP088 GRU → LIS May 29, 01:20 UTCMay 29, 10:35 UTC9h 15m
2026-05-28 TAP089 LIS → GRU May 28, 13:05 UTCMay 28, 22:55 UTC9h 50m
2026-05-27 TAP104 CNF → LIS May 27, 10:20 UTCMay 28, 05:35 UTC19h 15m
2026-05-27 TAP104 CNF → LIS May 27, 09:50 UTCMay 28, 05:35 UTC19h 45m
2026-05-24 TAP074 GIG → LIS May 24, 18:45 UTCMay 25, 03:35 UTC8h 50m
2026-05-23 TAP075 LIS → GIG May 23, 22:50 UTCMay 24, 08:05 UTC9h 15m
2026-05-23 TAP282 MPM → LIS May 23, 16:10 UTCMay 23, 17:35 UTC1h 25m
2026-05-22 TAP281 LIS → MPM May 22, 18:35 UTCMay 23, 17:35 UTC22h 59m
2026-05-22 TAP298 - May 22, 08:15 UTCMay 22, 15:40 UTC7h 25m
2026-05-21 TAP297 - May 21, 22:55 UTCMay 22, 05:55 UTC7h 0m
2026-05-21 TAP226 MIA → LIS May 21, 08:15 UTCMay 21, 16:01 UTC7h 45m
2026-05-20 TAP225V LIS → MIA May 20, 18:25 UTCMay 21, 02:50 UTC8h 25m
2026-05-20 TAP90EH FNC → LIS May 20, 13:35 UTCMay 20, 14:55 UTC1h 20m
2026-05-20 TAP89WT LIS → FNC May 20, 12:05 UTCMay 20, 12:20 UTC15m
2026-05-20 TAP89WT LIS → FNC May 20, 10:50 UTCMay 20, 11:25 UTC35m
2026-05-19 TAP104 CNF → LIS May 19, 10:20 UTCMay 20, 05:10 UTC18h 51m
2026-05-19 TAP104 CNF → LIS May 19, 08:55 UTCMay 20, 05:10 UTC20h 16m
2026-05-18 TAP224 MIA → LIS May 18, 21:35 UTCMay 19, 05:00 UTC7h 25m
2026-05-18 TAP22MI LIS → MIA May 18, 10:25 UTCMay 18, 19:15 UTC8h 49m
2026-05-17 TAP104 CNF → LIS May 17, 10:20 UTCMay 18, 05:45 UTC19h 25m
2026-05-17 TAP103 LIS → CNF May 17, 10:10 UTCMay 18, 05:45 UTC19h 35m
2026-05-16 TAP082 GRU → LIS May 16, 18:55 UTCMay 17, 03:50 UTC8h 55m
2026-05-15 TAP087 LIS → GRU May 15, 23:25 UTCMay 16, 09:21 UTC9h 56m
2026-05-15 TAP084 GRU → LIS May 15, 04:00 UTCMay 15, 13:15 UTC9h 15m
2026-05-14 TAP083 LIS → GRU May 14, 16:25 UTCMay 15, 02:15 UTC9h 50m
2026-05-14 TAP088 GRU → LIS May 14, 00:10 UTCMay 14, 09:00 UTC8h 50m
2026-05-13 TAP089 LIS → GRU May 13, 12:10 UTCMay 13, 22:05 UTC9h 55m
2026-05-12 TAP057 LIS → BSB May 12, 10:20 UTCMay 13, 05:40 UTC19h 20m
2026-05-11 TAP104 CNF → LIS May 11, 10:20 UTCMay 12, 05:15 UTC18h 55m
2026-05-11 TAP103 LIS → CNF May 11, 09:45 UTCMay 12, 05:15 UTC19h 30m
2026-05-10 TAP082 GRU → LIS May 10, 18:49 UTCMay 11, 03:50 UTC9h 0m
2026-05-09 TAP087 LIS → GRU May 9, 23:40 UTCMay 10, 09:45 UTC10h 5m
2026-05-09 TAP282 MPM → LIS May 9, 16:25 UTCMay 9, 17:55 UTC1h 30m
2026-05-08 TAP282 MPM → LIS May 8, 18:55 UTCMay 9, 17:55 UTC23h 0m
2026-05-08 TAP236 SFO → LIS May 8, 03:24 UTCMay 8, 14:10 UTC10h 45m
2026-05-07 TAP237M LIS → SFO May 7, 11:30 UTCMay 7, 23:14 UTC11h 44m
2026-05-06 TAP072 GIG → LIS May 6, 23:35 UTCMay 7, 08:50 UTC9h 15m
2026-05-06 TAP073 LIS → GIG May 6, 10:45 UTCMay 6, 20:10 UTC9h 24m
2026-05-06 TAP210 JFK → LIS May 6, 02:45 UTCMay 6, 08:50 UTC6h 5m
2026-05-05 TAP209K LIS → JFK May 5, 16:50 UTCMay 6, 00:20 UTC7h 30m
2026-05-05 TAP028 FOR → LIS May 5, 10:55 UTCMay 5, 12:10 UTC1h 15m
2026-05-04 TAP028 FOR → LIS May 4, 17:15 UTCMay 5, 10:35 UTC17h 21m
2026-05-04 TAP088 GRU → LIS May 4, 00:00 UTCMay 4, 08:45 UTC8h 45m
2026-05-03 TAP089 LIS → GRU May 3, 11:55 UTCMay 3, 21:50 UTC9h 55m
2026-05-02 TAP224 MIA → LIS May 2, 21:30 UTCMay 3, 05:05 UTC7h 34m
2026-05-02 TAP22MI LIS → MIA May 2, 10:20 UTCMay 2, 19:05 UTC8h 45m
2026-05-01 TAP236 SFO → LIS May 1, 03:30 UTCMay 1, 14:10 UTC10h 40m
2026-04-30 TAP239 CMN → LIS Apr 30, 13:35 UTCMay 1, 00:40 UTC11h 5m

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-TUA page for operator, model, and routing details .

Mode-S 4952A1 frequently asked

What is Mode-S code 4952A1?
4952A1 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TUA.
Where is Mode-S 4952A1 registered?
Mode-S code 4952A1 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4952A1 broadcasting right now?
Yes. Mode-S 4952A1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4952A1, octal 22251241, decimal 4,805,281.
What flights does 4952A1 operate?
Mode-S 4952A1 has broadcast 20 distinct callsigns, including TAP104, TAP224, TAP082, TAP22MI, TAP089.