Apparatus

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sensors Mode-S transponder

495309

ICAO 24-bit transponder address · allocated to Portugal

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

Hex
495309
Octal
22251411
Decimal
4,805,385
Country
PT
Tail
CS-TXI
Type
A21N
No current signal · last broadcast 5h ago
Flights observed
254
Distinct callsigns
20
Country
PT
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 495309.

Country allocation

The ICAO 24-bit address 495309 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
TAP218 - 11 2026-07-13
TAP217C - 11 2026-07-13
TAP211 - 9 2026-06-17
TAP052 - 9 2026-07-04
TAP212 - 8 2026-06-18
TAP051 - 8 2026-07-03
TAP006 - 8 2026-06-13
TAP215 TAP Portugal 7 2026-06-06
TAP262M - 6 2026-06-27
TAP261 - 6 2026-06-26
TAP216L TAP Portugal 6 2026-06-07
TAP1703 - 6 2026-05-20
TAP433 - 5 2026-06-25
TAP432 - 5 2026-06-25
TAP25YZ - 5 2026-07-05
TAP257N - 5 2026-07-05
TAP254 - 5 2026-07-10
TAP232Y - 5 2026-06-30
TAP231P - 5 2026-06-30
TAP1704 - 5 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 TAP218 - Jul 13, 23:00 UTCJul 13, 23:55 UTC55m
2026-07-13 TAP217C LIS → BOS Jul 13, 11:30 UTCJul 13, 18:15 UTC6h 45m
2026-07-12 TAP1527 LIS → LIS Jul 12, 09:25 UTCJul 13, 03:45 UTC18h 20m
2026-07-11 TAP1532 LIS → LIS Jul 11, 11:10 UTCJul 12, 04:01 UTC16h 50m
2026-07-10 TAP93ZS ZRH → LIS Jul 10, 16:50 UTCJul 10, 19:30 UTC2h 40m
2026-07-10 TAP932 LIS → ZRH Jul 10, 12:55 UTCJul 10, 15:30 UTC2h 35m
2026-07-10 TAP254 YUL → LIS Jul 10, 05:05 UTCJul 10, 11:10 UTC6h 5m
2026-07-10 TAP253 - Jul 10, 01:10 UTCJul 10, 03:00 UTC1h 50m
2026-07-09 TAP253 - Jul 9, 18:35 UTCJul 9, 19:15 UTC40m
2026-07-05 TAP25YZ YYZ → LIS Jul 5, 21:45 UTCJul 6, 04:20 UTC6h 35m
2026-07-05 TAP257N LIS → YYZ Jul 5, 10:10 UTCJul 5, 18:00 UTC7h 50m
2026-07-04 TAP218 - Jul 4, 22:30 UTCJul 5, 04:30 UTC6h 0m
2026-07-04 TAP217C LIS → BOS Jul 4, 11:15 UTCJul 4, 17:55 UTC6h 40m
2026-07-04 TAP052 - Jul 4, 07:40 UTCJul 4, 08:30 UTC50m
2026-07-03 TAP051 - Jul 3, 08:55 UTCJul 4, 08:15 UTC23h 20m
2026-07-02 TAP25YZ - Jul 2, 23:40 UTCJul 3, 04:45 UTC5h 5m
2026-07-02 TAP25YZ - Jul 2, 22:00 UTCJul 2, 23:35 UTC1h 35m
2026-07-02 TAP257N LIS → YYZ Jul 2, 10:00 UTCJul 2, 17:30 UTC7h 30m
2026-07-01 TAP25YZ YYZ → LIS Jul 1, 22:30 UTCJul 2, 05:30 UTC7h 0m
2026-07-01 TAP257N LIS → YYZ Jul 1, 10:10 UTCJul 1, 17:50 UTC7h 40m
2026-06-30 TAP232Y IAD → LIS Jun 30, 21:20 UTCJul 1, 04:15 UTC6h 55m
2026-06-30 TAP231P LIS → IAD Jun 30, 11:35 UTCJun 30, 19:00 UTC7h 25m
2026-06-30 TAP254 YUL → LIS Jun 30, 03:15 UTCJun 30, 09:20 UTC6h 5m
2026-06-29 TAP253R LIS → YUL Jun 29, 17:55 UTCJun 30, 01:00 UTC7h 5m
2026-06-29 TAP254 YUL → LIS Jun 29, 04:45 UTCJun 29, 10:40 UTC5h 55m
2026-06-28 TAP253R LIS → YUL Jun 28, 17:55 UTCJun 29, 01:10 UTC7h 15m
2026-06-28 TAP016 - Jun 28, 08:50 UTCJun 28, 15:55 UTC7h 5m
2026-06-28 TAP015 - Jun 28, 00:20 UTCJun 28, 07:14 UTC6h 55m
2026-06-27 TAP1862 - Jun 27, 17:39 UTCJun 27, 18:20 UTC40m
2026-06-27 TAP1861 - Jun 27, 13:15 UTCJun 27, 13:55 UTC40m
2026-06-27 TAP262M - Jun 27, 03:44 UTCJun 27, 10:05 UTC6h 20m
2026-06-26 TAP261 LIS → YYZ Jun 26, 17:29 UTCJun 27, 01:35 UTC8h 5m
2026-06-26 TAP262M YYZ → LIS Jun 26, 04:50 UTCJun 26, 11:09 UTC6h 20m
2026-06-25 TAP261 LIS → YYZ Jun 25, 17:49 UTCJun 26, 01:50 UTC8h 0m
2026-06-25 TAP433 ORY → LIS Jun 25, 13:14 UTCJun 25, 15:34 UTC2h 20m
2026-06-25 TAP432 LIS → ORY Jun 25, 09:50 UTCJun 25, 11:44 UTC1h 55m
2026-06-24 TAP232Y IAD → LIS Jun 24, 22:10 UTCJun 25, 04:40 UTC6h 30m
2026-06-24 TAP231P LIS → IAD Jun 24, 11:50 UTCJun 24, 19:49 UTC8h 0m
2026-06-23 TAP5AS FRA → LIS Jun 23, 19:24 UTCJun 23, 22:10 UTC2h 45m
2026-06-23 TAP72LP LIS → FRA Jun 23, 15:34 UTCJun 23, 18:04 UTC2h 30m
2026-06-23 TAP36GS - Jun 23, 10:59 UTCJun 23, 13:29 UTC2h 30m
2026-06-23 TAP1356 LIS → LHR Jun 23, 07:15 UTCJun 23, 09:34 UTC2h 20m
2026-06-22 TAP218 BOS → LIS Jun 22, 22:24 UTCJun 23, 04:14 UTC5h 50m
2026-06-22 TAP217C LIS → BOS Jun 22, 11:19 UTCJun 22, 18:19 UTC7h 0m
2026-06-21 TAP1528 LIS → LIS Jun 21, 11:10 UTCJun 22, 04:59 UTC17h 50m
2026-06-20 TAP1531 LIS → TMS Jun 20, 11:09 UTCJun 21, 03:44 UTC16h 35m
2026-06-20 TAP254 YUL → LIS Jun 20, 03:04 UTCJun 20, 08:59 UTC5h 55m
2026-06-19 TAP253R LIS → YUL Jun 19, 18:05 UTCJun 20, 00:54 UTC6h 50m
2026-06-19 TAP016 - Jun 19, 07:45 UTCJun 19, 14:54 UTC7h 10m
2026-06-19 TAP015 - Jun 19, 05:19 UTCJun 19, 05:40 UTC20m

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

Mode-S 495309 frequently asked

What is Mode-S code 495309?
495309 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TXI.
Where is Mode-S 495309 registered?
Mode-S code 495309 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 495309 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 495309, octal 22251411, decimal 4,805,385.
What flights does 495309 operate?
Mode-S 495309 has broadcast 20 distinct callsigns, including TAP218, TAP217C, TAP211, TAP052, TAP212.