Apparatus

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sensors Mode-S transponder

495303

ICAO 24-bit transponder address · allocated to Portugal

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

Hex
495303
Octal
22251403
Decimal
4,805,379
Country
PT
Tail
CS-TXC
Type
A21N
No current signal · last broadcast Jul 26, 18:35 UTC
Flights observed
275
Distinct callsigns
20
Country
PT
Last broadcast
Jul 26, 18:35 UTC

Last known position

Most recent position reported by Mode-S 495303.

Country allocation

The ICAO 24-bit address 495303 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
TAP216L TAP Portugal 16 2026-07-22
TAP215 TAP Portugal 15 2026-07-21
TAP231P - 13 2026-07-19
TAP232Y TAP Portugal 11 2026-07-19
TAP257N - 9 2026-06-28
TAP218 - 8 2026-07-10
TAP052 - 8 2026-07-16
TAP234Y - 7 2026-07-12
TAP233 - 7 2026-07-11
TAP217C - 7 2026-07-10
TAP202A TAP Portugal 7 2026-07-18
TAP201 TAP Portugal 7 2026-07-18
TAP015 TAP Portugal 7 2026-07-25
TAP258 TAP Portugal 6 2026-05-17
TAP227 TAP Portugal 6 2026-07-22
TAP016 TAP Portugal 6 2026-07-25
TAP6MS - 5 2026-06-24
TAP669 - 5 2026-06-24
TAP051 - 5 2026-07-15
TAP228 TAP Portugal 4 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TAP253R LIS → YUL Jul 26, 17:50 UTCJul 26, 18:35 UTC45m
2026-07-26 TAP1929 OPO → LIS Jul 26, 15:15 UTCJul 26, 15:55 UTC40m
2026-07-26 TAP1928 LIS → OPO Jul 26, 13:15 UTCJul 26, 13:50 UTC35m
2026-07-25 TAP048 POA → LIS Jul 25, 16:50 UTCJul 26, 10:10 UTC17h 21m
2026-07-25 TAP016 REC → LIS Jul 25, 07:50 UTCJul 25, 15:05 UTC7h 15m
2026-07-25 TAP015 LIS → REC Jul 25, 05:05 UTCJul 25, 05:30 UTC25m
2026-07-24 TAP015 LIS → REC Jul 24, 22:20 UTCJul 25, 00:05 UTC1h 45m
2026-07-24 TAP016 REC → LIS Jul 24, 07:50 UTCJul 24, 15:05 UTC7h 15m
2026-07-23 TAP015 LIS → REC Jul 23, 22:15 UTCJul 24, 05:25 UTC7h 10m
2026-07-23 TAP67U AMS → LIS Jul 23, 18:25 UTCJul 23, 20:40 UTC2h 15m
2026-07-23 TAP67U AMS → LIS Jul 23, 18:05 UTCJul 23, 18:20 UTC15m
2026-07-23 TAP67AM LIS → AMS Jul 23, 14:00 UTCJul 23, 16:25 UTC2h 25m
2026-07-23 TAP3961 OPO → LIS Jul 23, 11:50 UTCJul 23, 12:25 UTC35m
2026-07-23 TAP228 BOS → OPO Jul 23, 03:30 UTCJul 23, 09:35 UTC6h 5m
2026-07-22 TAP227 OPO → BOS Jul 22, 17:25 UTCJul 22, 23:50 UTC6h 25m
2026-07-22 TAP1930 LIS → OPO Jul 22, 15:20 UTCJul 22, 15:50 UTC30m
2026-07-22 TAP216L BOS → LIS Jul 22, 03:00 UTCJul 22, 03:55 UTC55m
2026-07-21 TAP215 LIS → BOS Jul 21, 17:40 UTCJul 22, 00:20 UTC6h 40m
2026-07-21 TAP010 NAT → LIS Jul 21, 02:00 UTCJul 21, 08:40 UTC6h 40m
2026-07-20 TAP005 - Jul 20, 17:10 UTCJul 20, 19:05 UTC1h 55m
2026-07-20 TAP56DT HAM → LIS Jul 20, 11:45 UTCJul 20, 15:00 UTC3h 15m
2026-07-20 TAP560 LIS → HAM Jul 20, 07:35 UTCJul 20, 10:25 UTC2h 50m
2026-07-19 TAP232Y IAD → LIS Jul 19, 22:10 UTCJul 20, 04:45 UTC6h 35m
2026-07-19 TAP231P LIS → IAD Jul 19, 11:10 UTCJul 19, 19:10 UTC8h 0m
2026-07-18 TAP202A EWR → LIS Jul 18, 22:50 UTCJul 19, 05:15 UTC6h 25m
2026-07-18 TAP201 LIS → EWR Jul 18, 11:30 UTCJul 18, 19:20 UTC7h 50m
2026-07-18 TAP254 YUL → LIS Jul 18, 03:20 UTCJul 18, 09:35 UTC6h 15m
2026-07-17 TAP253R LIS → YUL Jul 17, 18:05 UTCJul 18, 01:00 UTC6h 55m
2026-07-16 TAP232Y IAD → LIS Jul 16, 22:35 UTCJul 17, 05:10 UTC6h 35m
2026-07-16 TAP231P LIS → IAD Jul 16, 11:05 UTCJul 16, 19:10 UTC8h 5m
2026-07-16 TAP052 - Jul 16, 08:00 UTCJul 16, 08:40 UTC40m
2026-07-15 TAP051 - Jul 15, 09:25 UTCJul 15, 10:10 UTC45m
2026-07-14 TAP1369 - Jul 14, 19:25 UTCJul 14, 21:45 UTC2h 20m
2026-07-14 TAP13HL LIS → LHR Jul 14, 15:40 UTCJul 14, 17:45 UTC2h 5m
2026-07-14 TAP052 - Jul 14, 09:10 UTCJul 14, 10:05 UTC55m
2026-07-13 TAP052 - Jul 13, 10:50 UTCJul 14, 10:05 UTC23h 15m
2026-07-13 TAP051 - Jul 13, 10:30 UTCJul 13, 11:15 UTC45m
2026-07-12 TAP202A EWR → LIS Jul 12, 21:35 UTCJul 13, 03:55 UTC6h 20m
2026-07-12 TAP201 LIS → EWR Jul 12, 11:50 UTCJul 12, 19:05 UTC7h 15m
2026-07-12 TAP234Y IAD → LIS Jul 12, 03:01 UTCJul 12, 09:35 UTC6h 35m
2026-07-11 TAP233 LIS → IAD Jul 11, 16:35 UTCJul 12, 00:25 UTC7h 50m
2026-07-11 TAP931L ZRH → LIS Jul 11, 12:15 UTCJul 11, 14:45 UTC2h 30m
2026-07-11 TAP93ZR LIS → ZRH Jul 11, 08:10 UTCJul 11, 10:30 UTC2h 20m
2026-07-10 TAP218 - Jul 10, 22:25 UTCJul 11, 04:20 UTC5h 55m
2026-07-10 TAP217C LIS → BOS Jul 10, 11:20 UTCJul 10, 18:00 UTC6h 40m
2026-07-10 TAP232Y IAD → LIS Jul 10, 00:00 UTCJul 10, 06:50 UTC6h 50m
2026-07-09 TAP231P LIS → IAD Jul 9, 11:40 UTCJul 9, 19:50 UTC8h 10m
2026-07-09 TAP216L BOS → LIS Jul 9, 03:15 UTCJul 9, 09:20 UTC6h 5m
2026-07-08 TAP215 LIS → BOS Jul 8, 17:20 UTCJul 9, 00:05 UTC6h 45m
2026-07-08 TAP56DT HAM → LIS Jul 8, 11:50 UTCJul 8, 14:45 UTC2h 55m

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

Mode-S 495303 frequently asked

What is Mode-S code 495303?
495303 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TXC.
Where is Mode-S 495303 registered?
Mode-S code 495303 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 495303 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 495303, octal 22251403, decimal 4,805,379.
What flights does 495303 operate?
Mode-S 495303 has broadcast 20 distinct callsigns, including TAP216L, TAP215, TAP231P, TAP232Y, TAP257N.