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 Jul 25, 04:35 UTC
Flights observed
275
Distinct callsigns
20
Country
PT
Last broadcast
Jul 25, 04:35 UTC

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 TAP Portugal 15 2026-07-24
TAP217C TAP Portugal 15 2026-07-24
TAP215 TAP Portugal 9 2026-07-23
TAP211 - 9 2026-06-17
TAP052 - 9 2026-07-04
TAP216L TAP Portugal 8 2026-07-24
TAP212 - 8 2026-06-18
TAP051 - 8 2026-07-03
TAP006 - 8 2026-06-13
TAP262M - 6 2026-06-27
TAP261 - 6 2026-06-26
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
2026-07-24 TAP218 BOS → LIS Jul 24, 22:20 UTCJul 25, 04:30 UTC6h 10m
2026-07-24 TAP217C LIS → BOS Jul 24, 11:25 UTCJul 24, 18:05 UTC6h 40m
2026-07-24 TAP216L BOS → LIS Jul 24, 03:00 UTCJul 24, 09:20 UTC6h 20m
2026-07-23 TAP215 LIS → BOS Jul 23, 17:00 UTCJul 23, 23:40 UTC6h 40m
2026-07-23 TAP218 BOS → LIS Jul 23, 01:20 UTCJul 23, 07:35 UTC6h 15m
2026-07-22 TAP217C LIS → BOS Jul 22, 11:30 UTCJul 22, 17:50 UTC6h 20m
2026-07-21 TAP669 AMS → LIS Jul 21, 12:10 UTCJul 21, 15:00 UTC2h 50m
2026-07-21 TAP6MS LIS → AMS Jul 21, 08:10 UTCJul 21, 10:40 UTC2h 30m
2026-07-20 TAP218 BOS → LIS Jul 20, 22:55 UTCJul 21, 05:20 UTC6h 24m
2026-07-20 TAP217C LIS → BOS Jul 20, 11:25 UTCJul 20, 18:25 UTC7h 0m
2026-07-19 TAP1527 LIS → ACC Jul 19, 09:35 UTCJul 20, 03:50 UTC18h 15m
2026-07-18 TAP1532 TMS → LIS Jul 18, 11:10 UTCJul 19, 03:50 UTC16h 40m
2026-07-18 TAP216L BOS → LIS Jul 18, 02:45 UTCJul 18, 08:35 UTC5h 51m
2026-07-17 TAP215 LIS → BOS Jul 17, 16:59 UTCJul 17, 23:45 UTC6h 45m
2026-07-16 TAP048 - Jul 16, 18:19 UTCJul 17, 13:10 UTC18h 50m
2026-07-16 TAP047 LIS → LIS Jul 16, 17:10 UTCJul 17, 13:10 UTC20h 0m
2026-07-16 TAP10NL - Jul 16, 13:45 UTCJul 16, 15:40 UTC1h 55m
2026-07-16 TAP1032 LIS → BCN Jul 16, 10:59 UTCJul 16, 12:20 UTC1h 20m
2026-07-15 TAP1527 LIS → LIS Jul 15, 09:30 UTCJul 16, 04:20 UTC18h 50m
2026-07-14 TAP218 BOS → LIS Jul 14, 22:50 UTCJul 15, 04:55 UTC6h 5m
2026-07-14 TAP217C LIS → BOS Jul 14, 11:15 UTCJul 14, 17:45 UTC6h 30m
2026-07-13 TAP218 BOS → LIS Jul 13, 23:00 UTCJul 14, 05:05 UTC6h 5m
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

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 Jul 25, 04:35 UTC.
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, TAP215, TAP211, TAP052.