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sensors Mode-S transponder

495304

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-TXD · AIRBUS A-321neo

Hex
495304
Octal
22251404
Decimal
4,805,380
Country
PT
Tail
CS-TXD
Type
A21N
No current signal · last broadcast Jul 26, 19:25 UTC
Flights observed
278
Distinct callsigns
20
Country
PT
Last broadcast
Jul 26, 19:25 UTC

Last known position

Most recent position reported by Mode-S 495304.

Country allocation

The ICAO 24-bit address 495304 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
TAP201 - 13 2026-07-16
TAP202A TAP Portugal 12 2026-07-16
TAP232Y - 11 2026-07-11
TAP231P - 11 2026-07-11
TAP216L TAP Portugal 10 2026-07-25
TAP234Y - 9 2026-07-13
TAP233 - 9 2026-07-13
TAP215 TAP Portugal 8 2026-07-24
TAP25YZ - 7 2026-07-14
TAP257N - 6 2026-07-13
TAP254 TAP Portugal 6 2026-05-25
TAP253R TAP Portugal 6 2026-05-24
TAP15NC TAP Portugal 6 2026-05-31
TAP1528 TAP Portugal 6 2026-05-01
TAP1527 TAP Portugal 6 2026-07-17
TAP14NC - 6 2026-05-31
TAP052 - 6 2026-07-02
TAP6MS - 5 2026-07-12
TAP669 - 5 2026-07-12
TAP227 TAP Portugal 5 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TAP009 - Jul 26, 17:40 UTCJul 26, 19:25 UTC1h 45m
2026-07-26 TAP75CH CPH → LIS Jul 26, 11:35 UTCJul 26, 14:45 UTC3h 10m
2026-07-26 TAP752 LIS → CPH Jul 26, 06:55 UTCJul 26, 10:10 UTC3h 15m
2026-07-25 TAP218 BOS → LIS Jul 25, 22:25 UTCJul 26, 04:40 UTC6h 15m
2026-07-25 TAP217C LIS → BOS Jul 25, 11:10 UTCJul 25, 17:40 UTC6h 30m
2026-07-25 TAP216L BOS → LIS Jul 25, 02:50 UTCJul 25, 09:05 UTC6h 15m
2026-07-24 TAP215 LIS → BOS Jul 24, 16:55 UTCJul 24, 23:30 UTC6h 35m
2026-07-24 TAP262M YYZ → LIS Jul 24, 04:30 UTCJul 24, 11:20 UTC6h 50m
2026-07-23 TAP261 LIS → MPM Jul 23, 19:40 UTCJul 24, 02:50 UTC7h 10m
2026-07-23 TAP1359 LHR → LIS Jul 23, 15:30 UTCJul 23, 17:55 UTC2h 25m
2026-07-23 TAP52TP LIS → LIS Jul 23, 10:10 UTCJul 23, 12:20 UTC2h 10m
2026-07-21 TAP216L BOS → LIS Jul 21, 03:10 UTCJul 21, 09:15 UTC6h 5m
2026-07-20 TAP215 LIS → BOS Jul 20, 16:55 UTCJul 20, 23:35 UTC6h 40m
2026-07-20 TAP016 REC → LIS Jul 20, 08:00 UTCJul 20, 14:35 UTC6h 35m
2026-07-19 TAP015 - Jul 19, 22:35 UTCJul 20, 05:45 UTC7h 10m
2026-07-19 TAP57W - Jul 19, 18:20 UTCJul 19, 20:45 UTC2h 25m
2026-07-19 TAP50Y LIS → LHR Jul 19, 14:25 UTCJul 19, 16:35 UTC2h 10m
2026-07-19 TAP012 REC → LIS Jul 19, 02:00 UTCJul 19, 09:00 UTC7h 0m
2026-07-18 TAP011 LIS → REC Jul 18, 16:45 UTCJul 19, 00:00 UTC7h 15m
2026-07-18 TAP1923 OPO → LIS Jul 18, 09:30 UTCJul 18, 10:20 UTC50m
2026-07-18 TAP1922 LIS → OPO Jul 18, 07:50 UTCJul 18, 08:20 UTC30m
2026-07-17 TAP1527 LIS → ACC Jul 17, 09:30 UTCJul 18, 04:05 UTC18h 36m
2026-07-16 TAP202A EWR → LIS Jul 16, 22:35 UTCJul 17, 04:49 UTC6h 15m
2026-07-16 TAP201 LIS → EWR Jul 16, 11:34 UTCJul 16, 19:10 UTC7h 35m
2026-07-16 TAP216L BOS → LIS Jul 16, 03:05 UTCJul 16, 09:00 UTC5h 55m
2026-07-15 TAP215 LIS → BOS Jul 15, 17:05 UTCJul 16, 00:10 UTC7h 5m
2026-07-14 TAP047 LIS → LIS Jul 14, 18:15 UTCJul 15, 10:35 UTC16h 19m
2026-07-14 TAP1359 - Jul 14, 13:15 UTCJul 14, 15:50 UTC2h 35m
2026-07-14 TAP52TP LIS → LHR Jul 14, 09:40 UTCJul 14, 11:45 UTC2h 5m
2026-07-14 TAP25YZ - Jul 14, 00:00 UTCJul 14, 04:55 UTC4h 55m
2026-07-13 TAP25YZ - Jul 13, 22:05 UTCJul 13, 23:50 UTC1h 45m
2026-07-13 TAP257N LIS → YYZ Jul 13, 11:50 UTCJul 13, 19:15 UTC7h 25m
2026-07-13 TAP234Y IAD → LIS Jul 13, 03:01 UTCJul 13, 09:55 UTC6h 55m
2026-07-13 TAP233 - Jul 13, 00:10 UTCJul 13, 00:20 UTC10m
2026-07-12 TAP233 - Jul 12, 16:50 UTCJul 13, 00:05 UTC7h 15m
2026-07-12 TAP669 - Jul 12, 12:15 UTCJul 12, 15:05 UTC2h 50m
2026-07-12 TAP6MS - Jul 12, 08:01 UTCJul 12, 10:20 UTC2h 20m
2026-07-11 TAP232Y IAD → LIS Jul 11, 21:15 UTCJul 12, 03:50 UTC6h 35m
2026-07-11 TAP231P LIS → IAD Jul 11, 11:05 UTCJul 11, 18:55 UTC7h 50m
2026-07-11 TAP216L BOS → LIS Jul 11, 03:25 UTCJul 11, 09:20 UTC5h 55m
2026-07-10 TAP215 LIS → BOS Jul 10, 17:05 UTCJul 11, 00:00 UTC6h 55m
2026-07-10 TAP36GS LHR → LIS Jul 10, 11:40 UTCJul 10, 13:55 UTC2h 15m
2026-07-10 TAP1356 LIS → LHR Jul 10, 07:35 UTCJul 10, 09:50 UTC2h 15m
2026-07-09 TAP202A - Jul 9, 21:40 UTCJul 10, 03:55 UTC6h 15m
2026-07-09 TAP201 LIS → EWR Jul 9, 12:00 UTCJul 9, 19:30 UTC7h 30m
2026-07-09 TAP234Y IAD → LIS Jul 9, 03:05 UTCJul 9, 10:00 UTC6h 55m
2026-07-08 TAP233 LIS → IAD Jul 8, 16:50 UTCJul 9, 00:20 UTC7h 30m
2026-07-08 TAP669 - Jul 8, 12:10 UTCJul 8, 14:45 UTC2h 35m
2026-07-08 TAP6MS - Jul 8, 08:00 UTCJul 8, 10:30 UTC2h 30m
2026-07-07 TAP202A EWR → LIS Jul 7, 21:55 UTCJul 8, 04:15 UTC6h 20m

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

Mode-S 495304 frequently asked

What is Mode-S code 495304?
495304 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TXD.
Where is Mode-S 495304 registered?
Mode-S code 495304 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 495304 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 495304, octal 22251404, decimal 4,805,380.
What flights does 495304 operate?
Mode-S 495304 has broadcast 20 distinct callsigns, including TAP201, TAP202A, TAP232Y, TAP231P, TAP216L.