Apparatus

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sensors Mode-S transponder

495171

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-TKQ · AIRBUS A-320

Hex
495171
Octal
22250561
Decimal
4,804,977
Country
PT
Tail
CS-TKQ
Type
A320
No current signal · last broadcast 4h ago
Flights observed
159
Distinct callsigns
20
Country
PT
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 495171.

Country allocation

The ICAO 24-bit address 495171 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
RZO153 - 13 2026-07-03
RZO120 - 11 2026-06-30
RZO173 - 10 2026-06-27
RZO128 - 9 2026-06-30
RZO127 - 9 2026-06-30
RZO174 - 8 2026-06-27
RZO123 - 8 2026-06-30
RZO141 - 6 2026-06-29
RZO121 - 6 2026-06-30
RZO565 SATA International 5 2026-06-27
RZO163 - 5 2026-06-27
RZO160 - 5 2026-06-27
RZO129 SATA International 5 2026-06-25
RZO124 - 5 2026-06-30
RZO151 - 4 2026-07-04
RZO150 SATA International 4 2026-06-19
RZO564 SATA International 3 2026-06-27
RZO3123 - 3 2026-05-24
RZO183 SATA International 3 2026-06-24
RZO142 - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-04 RZO142 LIS → LIS Jul 4, 15:00 UTCJul 4, 20:20 UTC5h 20m
2026-07-04 RZO151 LIS → LIS Jul 4, 07:30 UTCJul 4, 13:05 UTC5h 35m
2026-07-03 RZO153 LIS → LIS Jul 3, 14:25 UTCJul 3, 20:00 UTC5h 35m
2026-07-03 RZO151 LIS → LIS Jul 3, 07:00 UTCJul 3, 12:50 UTC5h 50m
2026-07-02 RZO134 OPO → LIS Jul 2, 14:45 UTCJul 2, 20:20 UTC5h 35m
2026-07-02 RZO131 LIS → OPO Jul 2, 08:15 UTCJul 2, 13:20 UTC5h 5m
2026-07-01 RZO153 LIS → LIS Jul 1, 14:45 UTCJul 1, 20:30 UTC5h 45m
2026-07-01 RZO140 LIS → LIS Jul 1, 07:00 UTCJul 1, 13:10 UTC6h 10m
2026-06-30 RZO128 - Jun 30, 23:40 UTCJul 1, 00:25 UTC45m
2026-06-30 RZO128 - Jun 30, 22:25 UTCJun 30, 22:35 UTC10m
2026-06-30 RZO127 - Jun 30, 19:05 UTCJun 30, 19:55 UTC50m
2026-06-30 RZO124 - Jun 30, 16:25 UTCJun 30, 17:25 UTC1h 0m
2026-06-30 RZO123 - Jun 30, 12:20 UTCJun 30, 13:05 UTC45m
2026-06-30 RZO120 - Jun 30, 09:45 UTCJun 30, 10:35 UTC50m
2026-06-30 RZO120 - Jun 30, 08:35 UTCJun 30, 08:45 UTC10m
2026-06-30 RZO121 - Jun 30, 07:15 UTCJun 30, 07:25 UTC10m
2026-06-30 RZO121 - Jun 30, 05:20 UTCJun 30, 06:05 UTC45m
2026-06-29 RZO153 LIS → LIS Jun 29, 14:39 UTCJun 29, 20:15 UTC5h 35m
2026-06-29 RZO141 LIS → LIS Jun 29, 07:09 UTCJun 29, 13:24 UTC6h 15m
2026-06-28 RZO128 - Jun 28, 22:55 UTCJun 29, 00:00 UTC1h 5m
2026-06-28 RZO127 - Jun 28, 18:49 UTCJun 28, 19:29 UTC40m
2026-06-28 RZO1157 LIS → LIS Jun 28, 08:19 UTCJun 28, 13:59 UTC5h 40m
2026-06-28 RZO128 - Jun 28, 00:09 UTCJun 28, 00:50 UTC40m
2026-06-27 RZO173 - Jun 27, 18:49 UTCJun 27, 19:24 UTC35m
2026-06-27 RZO174 - Jun 27, 16:44 UTCJun 27, 17:25 UTC40m
2026-06-27 RZO163 - Jun 27, 12:29 UTCJun 27, 12:34 UTC5m
2026-06-27 RZO160 - Jun 27, 11:14 UTCJun 27, 11:25 UTC10m
2026-06-27 RZO565 FRA → PDL Jun 27, 08:39 UTCJun 27, 08:49 UTC10m
2026-06-27 RZO565 FRA → PDL Jun 27, 04:34 UTCJun 27, 07:24 UTC2h 50m
2026-06-27 RZO564 PDL → FRA Jun 27, 00:29 UTCJun 27, 03:09 UTC2h 40m
2026-06-26 RZO127 - Jun 26, 19:14 UTCJun 26, 20:00 UTC45m
2026-06-26 RZO1147 LIS → LIS Jun 26, 11:14 UTCJun 26, 17:00 UTC5h 45m
2026-06-26 RZO1126 - Jun 26, 08:10 UTCJun 26, 08:54 UTC45m
2026-06-25 RZO129 LIS → PDL Jun 25, 23:39 UTCJun 25, 23:49 UTC10m
2026-06-25 RZO129 LIS → PDL Jun 25, 21:55 UTCJun 25, 22:34 UTC40m
2026-06-25 RZO143 LIS → PIX Jun 25, 14:59 UTCJun 25, 20:49 UTC5h 50m
2026-06-25 RZO120 - Jun 25, 09:40 UTCJun 25, 10:30 UTC50m
2026-06-25 RZO121 - Jun 25, 05:15 UTCJun 25, 06:00 UTC45m
2026-06-24 RZO183 OPO → TER Jun 24, 15:14 UTCJun 24, 20:30 UTC5h 15m
2026-06-24 RZO182 TER → OPO Jun 24, 08:04 UTCJun 24, 14:15 UTC6h 10m
2026-06-23 RZO128 - Jun 23, 23:59 UTCJun 24, 00:40 UTC40m
2026-06-23 RZO127 - Jun 23, 19:44 UTCJun 23, 20:24 UTC40m
2026-06-23 RZO124 PDL → LIS Jun 23, 17:04 UTCJun 23, 18:10 UTC1h 5m
2026-06-23 RZO123 - Jun 23, 12:49 UTCJun 23, 13:34 UTC45m
2026-06-23 RZO120 - Jun 23, 10:04 UTCJun 23, 11:14 UTC1h 10m
2026-06-22 RZO173 - Jun 22, 18:54 UTCJun 22, 19:34 UTC40m
2026-06-22 RZO174 - Jun 22, 16:54 UTCJun 22, 17:40 UTC45m
2026-06-22 RZO123 - Jun 22, 12:10 UTCJun 22, 12:44 UTC35m
2026-06-22 RZO120 - Jun 22, 09:54 UTCJun 22, 10:44 UTC50m
2026-06-21 RZO1129 - Jun 21, 21:54 UTCJun 21, 22:29 UTC35m

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

Mode-S 495171 frequently asked

What is Mode-S code 495171?
495171 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TKQ.
Where is Mode-S 495171 registered?
Mode-S code 495171 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 495171 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 495171, octal 22250561, decimal 4,804,977.
What flights does 495171 operate?
Mode-S 495171 has broadcast 20 distinct callsigns, including RZO153, RZO120, RZO173, RZO128, RZO127.