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 23d ago
Flights observed
217
Distinct callsigns
20
Country
PT
Last broadcast
23d 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 SATA International 20 2026-07-26
RZO127 - 13 2026-07-14
RZO120 - 13 2026-07-14
RZO141 SATA International 12 2026-07-26
RZO173 SATA International 11 2026-07-20
RZO123 - 11 2026-07-20
RZO128 - 10 2026-07-10
RZO174 - 9 2026-07-20
RZO151 - 8 2026-07-18
RZO183 - 7 2026-07-21
RZO129 SATA International 7 2026-07-23
RZO124 - 7 2026-07-14
RZO121 - 7 2026-07-14
RZO150 SATA International 6 2026-07-25
RZO143 - 6 2026-07-25
RZO131 SATA International 6 2026-07-21
RZO565 SATA International 5 2026-06-27
RZO163 - 5 2026-06-27
RZO160 - 5 2026-06-27
RZO140 - 4 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RZO153 LIS → HOR Jul 26, 14:35 UTCJul 26, 20:05 UTC5h 30m
2026-07-26 RZO141 LIS → PIX Jul 26, 07:20 UTCJul 26, 13:10 UTC5h 50m
2026-07-25 RZO143 LIS → LIS Jul 25, 14:30 UTCJul 25, 20:30 UTC6h 0m
2026-07-25 RZO150 HOR → LIS Jul 25, 07:05 UTCJul 25, 12:55 UTC5h 50m
2026-07-24 RZO1147 LIS → PIX Jul 24, 11:25 UTCJul 24, 16:50 UTC5h 25m
2026-07-24 RZO1126 PDL → LIS Jul 24, 07:40 UTCJul 24, 08:20 UTC40m
2026-07-23 RZO129 LIS → PDL Jul 23, 21:55 UTCJul 23, 22:40 UTC45m
2026-07-21 RZO183 OPO → LIS Jul 21, 16:35 UTCJul 21, 22:00 UTC5h 25m
2026-07-21 RZO131 LIS → TER Jul 21, 09:50 UTCJul 21, 15:15 UTC5h 25m
2026-07-21 RZO9131 - Jul 21, 08:00 UTCJul 21, 08:40 UTC40m
2026-07-20 RZO173 OPO → PDL Jul 20, 18:50 UTCJul 20, 19:30 UTC40m
2026-07-20 RZO174 - Jul 20, 16:45 UTCJul 20, 17:30 UTC45m
2026-07-20 RZO123 - Jul 20, 12:05 UTCJul 20, 12:50 UTC45m
2026-07-19 RZO153 LIS → LIS Jul 19, 14:30 UTCJul 19, 20:10 UTC5h 40m
2026-07-19 RZO140 - Jul 19, 12:15 UTCJul 19, 12:55 UTC40m
2026-07-19 RZO141 LIS → PIX Jul 19, 07:20 UTCJul 19, 07:55 UTC35m
2026-07-18 RZO143 LIS → LIS Jul 18, 16:00 UTCJul 18, 21:10 UTC5h 10m
2026-07-18 RZO151 LIS → LIS Jul 18, 09:25 UTCJul 18, 14:45 UTC5h 20m
2026-07-17 RZO183 OPO → LIS Jul 17, 16:49 UTCJul 17, 22:29 UTC5h 40m
2026-07-17 RZO131 LIS → TER Jul 17, 09:55 UTCJul 17, 15:15 UTC5h 20m
2026-07-16 RZO129 LIS → PDL Jul 16, 21:40 UTCJul 17, 08:25 UTC10h 45m
2026-07-16 RZO143 LIS → LIS Jul 16, 14:35 UTCJul 16, 20:19 UTC5h 45m
2026-07-16 RZO151 LIS → LIS Jul 16, 07:15 UTCJul 16, 12:55 UTC5h 40m
2026-07-15 RZO134 - Jul 15, 21:20 UTCJul 15, 22:05 UTC45m
2026-07-15 RZO134 - Jul 15, 18:45 UTCJul 15, 18:55 UTC10m
2026-07-15 RZO183 - Jul 15, 14:35 UTCJul 15, 15:20 UTC45m
2026-07-15 RZO131 LIS → OPO Jul 15, 07:55 UTCJul 15, 13:15 UTC5h 20m
2026-07-15 RZO9131 - Jul 15, 04:15 UTCJul 15, 05:05 UTC50m
2026-07-14 RZO127 - Jul 14, 18:55 UTCJul 14, 19:40 UTC45m
2026-07-14 RZO124 - Jul 14, 16:55 UTCJul 14, 17:35 UTC40m
2026-07-14 RZO123 - Jul 14, 12:15 UTCJul 14, 13:00 UTC45m
2026-07-14 RZO120 - Jul 14, 09:45 UTCJul 14, 10:35 UTC50m
2026-07-14 RZO121 - Jul 14, 05:20 UTCJul 14, 06:05 UTC45m
2026-07-13 RZO183 OPO → LIS Jul 13, 16:30 UTCJul 13, 21:35 UTC5h 5m
2026-07-13 RZO131 LIS → OPO Jul 13, 09:40 UTCJul 13, 14:55 UTC5h 15m
2026-07-13 RZO9131 - Jul 13, 07:40 UTCJul 13, 08:25 UTC45m
2026-07-12 RZO1129 - Jul 12, 22:15 UTCJul 12, 23:00 UTC45m
2026-07-12 RZO153 LIS → LIS Jul 12, 14:55 UTCJul 12, 20:45 UTC5h 50m
2026-07-12 RZO141 LIS → LIS Jul 12, 07:15 UTCJul 12, 13:05 UTC5h 50m
2026-07-11 RZO143 LIS → LIS Jul 11, 15:00 UTCJul 11, 20:35 UTC5h 35m
2026-07-11 RZO151 LIS → LIS Jul 11, 07:10 UTCJul 11, 13:00 UTC5h 50m
2026-07-10 RZO152 LIS → LIS Jul 10, 15:55 UTCJul 10, 21:30 UTC5h 35m
2026-07-10 RZO150 LIS → LIS Jul 10, 07:00 UTCJul 10, 13:20 UTC6h 20m
2026-07-10 RZO128 - Jul 10, 00:40 UTCJul 10, 01:20 UTC40m
2026-07-09 RZO127 - Jul 9, 21:55 UTCJul 9, 22:05 UTC10m
2026-07-09 RZO127 - Jul 9, 20:00 UTCJul 9, 20:40 UTC40m
2026-07-09 RZO124 - Jul 9, 17:40 UTCJul 9, 18:25 UTC45m
2026-07-09 RZO123 - Jul 9, 13:00 UTCJul 9, 14:00 UTC1h 0m
2026-07-09 RZO120 - Jul 9, 10:10 UTCJul 9, 10:55 UTC45m
2026-07-08 RZO127 - Jul 8, 21:45 UTCJul 8, 22:35 UTC50m

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 23d 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, RZO127, RZO120, RZO141, RZO173.