Apparatus

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sensors Mode-S transponder

495308

ICAO 24-bit transponder address · allocated to Portugal

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

Hex
495308
Octal
22251410
Decimal
4,805,384
Country
PT
Tail
CS-TXH
Type
A21N
No current signal · last broadcast 2h ago
Flights observed
264
Distinct callsigns
20
Country
PT
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 495308.

Country allocation

The ICAO 24-bit address 495308 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
TAP211 - 17 2026-07-10
TAP212 - 16 2026-07-11
TAP1703 - 15 2026-07-12
TAP1704 - 11 2026-07-12
TAP254 - 9 2026-07-14
TAP228 - 9 2026-07-13
TAP257N - 8 2026-06-21
TAP215 - 8 2026-06-22
TAP253R - 7 2026-07-13
TAP011 - 7 2026-06-28
TAP6MS TAP Portugal 6 2026-06-12
TAP669 TAP Portugal 6 2026-06-12
TAP227 - 6 2026-07-12
TAP571 TAP Portugal 5 2026-06-16
TAP262M - 5 2026-07-09
TAP261 - 5 2026-07-08
TAP258 TAP Portugal 5 2026-05-11
TAP232Y - 5 2026-07-04
TAP231P - 5 2026-07-04
TAP218 - 5 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TAP254 - Jul 14, 10:05 UTCJul 14, 10:50 UTC45m
2026-07-14 TAP254 - Jul 14, 04:30 UTCJul 14, 06:00 UTC1h 30m
2026-07-13 TAP253R LIS → YUL Jul 13, 19:45 UTCJul 14, 02:30 UTC6h 45m
2026-07-13 TAP1929 OPO → LIS Jul 13, 17:35 UTCJul 13, 18:15 UTC40m
2026-07-13 TAP228 BOS → OPO Jul 13, 04:05 UTCJul 13, 10:15 UTC6h 10m
2026-07-12 TAP227 OPO → BOS Jul 12, 17:50 UTCJul 13, 00:30 UTC6h 40m
2026-07-12 TAP1704 - Jul 12, 14:15 UTCJul 12, 15:55 UTC1h 40m
2026-07-12 TAP1703 - Jul 12, 11:25 UTCJul 12, 12:25 UTC1h 0m
2026-07-12 TAP228 BOS → OPO Jul 12, 03:30 UTCJul 12, 09:25 UTC5h 55m
2026-07-11 TAP227 OPO → BOS Jul 11, 17:25 UTCJul 12, 00:10 UTC6h 45m
2026-07-11 TAP212 EWR → OPO Jul 11, 03:25 UTCJul 11, 09:50 UTC6h 25m
2026-07-10 TAP211 OPO → EWR Jul 10, 17:35 UTCJul 11, 00:55 UTC7h 20m
2026-07-10 TAP1704 FNC → OPO Jul 10, 14:15 UTCJul 10, 15:50 UTC1h 35m
2026-07-10 TAP1703 - Jul 10, 13:15 UTCJul 10, 13:20 UTC5m
2026-07-10 TAP1703 - Jul 10, 11:35 UTCJul 10, 12:35 UTC1h 0m
2026-07-10 TAP212 EWR → OPO Jul 10, 03:35 UTCJul 10, 10:00 UTC6h 25m
2026-07-09 TAP211 OPO → EWR Jul 9, 17:15 UTCJul 10, 00:35 UTC7h 20m
2026-07-09 TAP1928 LIS → OPO Jul 9, 13:25 UTCJul 9, 13:55 UTC30m
2026-07-09 TAP262M YYZ → LIS Jul 9, 03:10 UTCJul 9, 09:55 UTC6h 45m
2026-07-08 TAP261 LIS → YYZ Jul 8, 17:00 UTCJul 9, 00:30 UTC7h 30m
2026-07-08 TAP016 - Jul 8, 07:25 UTCJul 8, 14:30 UTC7h 5m
2026-07-07 TAP015 - Jul 7, 22:10 UTCJul 8, 05:25 UTC7h 15m
2026-07-07 TAP93ZS ZRH → LIS Jul 7, 16:50 UTCJul 7, 19:20 UTC2h 30m
2026-07-07 TAP932 LIS → ZRH Jul 7, 13:05 UTCJul 7, 15:35 UTC2h 30m
2026-07-07 TAP262M YYZ → LIS Jul 7, 03:15 UTCJul 7, 10:10 UTC6h 55m
2026-07-06 TAP261 LIS → YYZ Jul 6, 17:25 UTCJul 7, 01:05 UTC7h 40m
2026-07-06 TAP008 - Jul 6, 07:50 UTCJul 6, 14:20 UTC6h 30m
2026-07-05 TAP008 - Jul 5, 18:05 UTCJul 6, 14:20 UTC20h 15m
2026-07-05 TAP553R - Jul 5, 11:55 UTCJul 5, 14:40 UTC2h 45m
2026-07-05 TAP552N LIS → MUC Jul 5, 08:05 UTCJul 5, 10:40 UTC2h 35m
2026-07-04 TAP232Y IAD → LIS Jul 4, 21:20 UTCJul 5, 04:10 UTC6h 50m
2026-07-04 TAP231P LIS → IAD Jul 4, 11:05 UTCJul 4, 18:20 UTC7h 15m
2026-07-03 TAP009 LIS → LIS Jul 3, 17:15 UTCJul 4, 09:05 UTC15h 50m
2026-07-03 TAP553R MUC → LIS Jul 3, 12:50 UTCJul 3, 15:35 UTC2h 45m
2026-07-03 TAP552N LIS → MUC Jul 3, 08:15 UTCJul 3, 11:05 UTC2h 50m
2026-07-02 TAP218 BOS → LIS Jul 2, 22:45 UTCJul 3, 04:55 UTC6h 10m
2026-07-02 TAP217C LIS → BOS Jul 2, 11:35 UTCJul 2, 18:05 UTC6h 30m
2026-07-02 TAP254 YUL → LIS Jul 2, 03:15 UTCJul 2, 09:45 UTC6h 30m
2026-07-01 TAP253R LIS → YUL Jul 1, 17:20 UTCJul 2, 00:15 UTC6h 55m
2026-07-01 TAP016 - Jul 1, 08:00 UTCJul 1, 15:15 UTC7h 15m
2026-06-30 TAP015 - Jun 30, 22:10 UTCJul 1, 05:15 UTC7h 5m
2026-06-30 TAP1337 LGW → LIS Jun 30, 16:10 UTCJun 30, 18:30 UTC2h 20m
2026-06-30 TAP13CT LIS → LGW Jun 30, 12:20 UTCJun 30, 14:30 UTC2h 10m
2026-06-30 TAP262M - Jun 30, 03:25 UTCJun 30, 10:15 UTC6h 50m
2026-06-29 TAP261 LIS → YYZ Jun 29, 17:24 UTCJun 30, 01:09 UTC7h 45m
2026-06-28 TAP2525 LIS → LIS Jun 28, 11:55 UTCJun 29, 05:09 UTC17h 15m
2026-06-28 TAP012 - Jun 28, 02:10 UTCJun 28, 09:30 UTC7h 20m
2026-06-28 TAP011 - Jun 28, 00:25 UTCJun 28, 00:35 UTC10m
2026-06-27 TAP011 - Jun 27, 17:39 UTCJun 27, 19:19 UTC1h 40m
2026-06-27 TAP1929 - Jun 27, 15:10 UTCJun 27, 15:49 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-TXH page for operator, model, and routing details .

Mode-S 495308 frequently asked

What is Mode-S code 495308?
495308 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TXH.
Where is Mode-S 495308 registered?
Mode-S code 495308 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 495308 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 495308, octal 22251410, decimal 4,805,384.
What flights does 495308 operate?
Mode-S 495308 has broadcast 20 distinct callsigns, including TAP211, TAP212, TAP1703, TAP1704, TAP254.