Apparatus

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sensors Mode-S transponder

4951D8

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-TNX · AIRBUS A-320

Hex
4951D8
Octal
22250730
Decimal
4,805,080
Country
PT
Tail
CS-TNX
Type
A320
Broadcasting now · 2,200 ft
Flights observed
422
Distinct callsigns
20
Country
PT
Last broadcast
Jul 26, 20:20 UTC

Current position

4951D8 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4951D8 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
TAP35MT - 6 2026-07-09
TAP1329 - 6 2026-07-09
TAP1328 - 6 2026-07-09
TAP9RH - 5 2026-06-26
TAP96AW TAP Portugal 5 2026-05-12
TAP93ZR - 5 2026-07-12
TAP934 - 5 2026-06-25
TAP931L - 5 2026-07-12
TAP825 TAP Portugal 5 2026-07-23
TAP824 TAP Portugal 5 2026-07-23
TAP647 TAP Portugal 5 2026-07-24
TAP46RU TAP Portugal 5 2026-07-23
TAP1920 - 5 2026-07-10
TAP11WQ TAP Portugal 5 2026-07-23
TAP10MD TAP Portugal 5 2026-07-23
TAP939 - 4 2026-07-09
TAP938 - 4 2026-07-09
TAP91SR TAP Portugal 4 2026-05-13
TAP8RL TAP Portugal 4 2026-07-26
TAP838Z TAP Portugal 4 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TAP564C LIS → HAM Jul 26, 17:15 UTCJul 26, 20:15 UTC3h 0m
2026-07-26 TAP1137 AGP → LIS Jul 26, 14:30 UTCJul 26, 15:30 UTC1h 0m
2026-07-26 TAP1136 LIS → AGP Jul 26, 11:40 UTCJul 26, 12:30 UTC50m
2026-07-26 TAP8RL FCO → LIS Jul 26, 04:15 UTCJul 26, 07:00 UTC2h 46m
2026-07-25 TAP838Z LIS → FCO Jul 25, 19:45 UTCJul 25, 21:55 UTC2h 10m
2026-07-25 TAP1013 MAD → LIS Jul 25, 12:05 UTCJul 25, 13:05 UTC1h 0m
2026-07-25 TAP12LM LIS → MAD Jul 25, 09:55 UTCJul 25, 10:45 UTC50m
2026-07-25 TAP757P CPH → LIS Jul 25, 04:50 UTCJul 25, 08:15 UTC3h 25m
2026-07-24 TAP6CY LIS → CPH Jul 24, 18:35 UTCJul 24, 21:55 UTC3h 20m
2026-07-24 TAP941 GVA → LIS Jul 24, 11:15 UTCJul 24, 13:50 UTC2h 35m
2026-07-24 TAP40GV LIS → GVA Jul 24, 08:15 UTCJul 24, 10:10 UTC1h 55m
2026-07-24 TAP647 BRU → LIS Jul 24, 04:10 UTCJul 24, 06:55 UTC2h 45m
2026-07-23 TAP46RU LIS → BRU Jul 23, 20:15 UTCJul 23, 22:35 UTC2h 20m
2026-07-23 TAP825 MXP → LIS Jul 23, 16:10 UTCJul 23, 18:45 UTC2h 35m
2026-07-23 TAP824 LIS → MXP Jul 23, 12:30 UTCJul 23, 14:40 UTC2h 10m
2026-07-23 TAP11WQ MAD → LIS Jul 23, 09:25 UTCJul 23, 10:30 UTC1h 5m
2026-07-23 TAP10MD LIS → MAD Jul 23, 07:10 UTCJul 23, 08:05 UTC55m
2026-07-23 TAP41SN BCN → LIS Jul 23, 04:15 UTCJul 23, 05:50 UTC1h 35m
2026-07-22 TAP1040 LIS → BCN Jul 22, 22:15 UTCJul 22, 23:40 UTC1h 25m
2026-07-22 TAP553R MUC → LIS Jul 22, 12:40 UTCJul 22, 15:40 UTC3h 0m
2026-07-22 TAP9ML - Jul 22, 04:10 UTCJul 22, 10:25 UTC6h 15m
2026-07-21 TAP828 LIS → MXP Jul 21, 20:15 UTCJul 21, 22:30 UTC2h 15m
2026-07-21 TAP94VA GVA → LIS Jul 21, 16:45 UTCJul 21, 19:00 UTC2h 15m
2026-07-21 TAP42LV LIS → GVA Jul 21, 13:40 UTCJul 21, 15:35 UTC1h 55m
2026-07-21 TAP9ML MXP → LIS Jul 21, 04:05 UTCJul 21, 06:35 UTC2h 30m
2026-07-20 TAP828 LIS → MXP Jul 20, 20:40 UTCJul 20, 23:00 UTC2h 20m
2026-07-20 TAP433 ORY → LIS Jul 20, 13:05 UTCJul 20, 15:35 UTC2h 30m
2026-07-20 TAP432 LIS → ORY Jul 20, 09:40 UTCJul 20, 11:30 UTC1h 50m
2026-07-20 TAP53EI BER → LIS Jul 20, 04:20 UTCJul 20, 07:40 UTC3h 20m
2026-07-19 TAP4BE LIS → BER Jul 19, 17:35 UTCJul 19, 20:35 UTC3h 0m
2026-07-19 TAP31DB - Jul 19, 12:05 UTCJul 19, 15:25 UTC3h 20m
2026-07-19 TAP53LB LIS → BER Jul 19, 07:15 UTCJul 19, 10:10 UTC2h 55m
2026-07-19 TAP1908 FAO → LIS Jul 19, 05:15 UTCJul 19, 05:45 UTC30m
2026-07-18 TAP1907 LIS → FAO Jul 18, 22:05 UTCJul 18, 22:40 UTC35m
2026-07-18 TAP863Y VCE → LIS Jul 18, 17:50 UTCJul 18, 20:45 UTC2h 55m
2026-07-18 TAP86VR - Jul 18, 13:40 UTCJul 18, 16:05 UTC2h 25m
2026-07-18 TAP145W RAK → LIS Jul 18, 10:55 UTCJul 18, 12:00 UTC1h 5m
2026-07-18 TAP1452 - Jul 18, 08:25 UTCJul 18, 09:30 UTC1h 5m
2026-07-18 TAP647 BRU → LIS Jul 18, 04:15 UTCJul 18, 07:00 UTC2h 45m
2026-07-17 TAP46RU LIS → BRU Jul 17, 19:30 UTCJul 17, 21:44 UTC2h 15m
2026-07-17 TAP17RA - Jul 17, 13:29 UTCJul 17, 15:10 UTC1h 40m
2026-07-17 TAP16AL - Jul 17, 09:55 UTCJul 17, 11:39 UTC1h 45m
2026-07-17 TAP575 FRA → LIS Jul 17, 04:29 UTCJul 17, 07:30 UTC3h 0m
2026-07-16 TAP57LK LIS → FRA Jul 16, 18:15 UTCJul 16, 20:35 UTC2h 20m
2026-07-16 TAP120R - Jul 16, 11:20 UTCJul 16, 15:25 UTC4h 5m
2026-07-16 TAP120Y LIS → WAW Jul 16, 06:30 UTCJul 16, 09:55 UTC3h 25m
2026-07-15 TAP1155 MAH → LIS Jul 15, 17:35 UTCJul 15, 19:40 UTC2h 5m
2026-07-15 TAP54MH LIS → MAH Jul 15, 14:30 UTCJul 15, 16:10 UTC1h 40m
2026-07-15 TAP1736 - Jul 15, 11:30 UTCJul 15, 12:55 UTC1h 25m
2026-07-15 TAP1735 - Jul 15, 09:00 UTCJul 15, 09:50 UTC50m

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

Mode-S 4951D8 frequently asked

What is Mode-S code 4951D8?
4951D8 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TNX.
Where is Mode-S 4951D8 registered?
Mode-S code 4951D8 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4951D8 broadcasting right now?
Yes. Mode-S 4951D8 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4951D8, octal 22250730, decimal 4,805,080.
What flights does 4951D8 operate?
Mode-S 4951D8 has broadcast 20 distinct callsigns, including TAP35MT, TAP1329, TAP1328, TAP9RH, TAP96AW.