Apparatus

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sensors Mode-S transponder

491478

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-ECX · TECNAM P-2006T

Hex
491478
Octal
22212170
Decimal
4,789,368
Country
PT
Tail
CS-ECX
Type
P06T
No current signal · last broadcast 7d ago
Flights observed
142
Distinct callsigns
1
Country
PT
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S 491478.

Country allocation

The ICAO 24-bit address 491478 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 1 distinct

Callsign Airline Flights Last seen
RTV4T - 142 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 RTV4T - Jul 10, 08:55 UTCJul 10, 11:10 UTC2h 15m
2026-07-09 RTV4T - Jul 9, 13:40 UTCJul 9, 15:05 UTC1h 25m
2026-07-08 RTV4T - Jul 8, 17:10 UTCJul 8, 18:30 UTC1h 20m
2026-07-08 RTV4T - Jul 8, 13:35 UTCJul 8, 16:30 UTC2h 55m
2026-07-08 RTV4T - Jul 8, 10:15 UTCJul 8, 12:35 UTC2h 20m
2026-07-07 RTV4T - Jul 7, 14:05 UTCJul 7, 16:45 UTC2h 40m
2026-07-07 RTV4T - Jul 7, 08:45 UTCJul 7, 11:20 UTC2h 35m
2026-07-06 RTV4T - Jul 6, 09:15 UTCJul 6, 10:55 UTC1h 40m
2026-07-04 RTV4T - Jul 4, 09:45 UTCJul 4, 10:40 UTC55m
2026-07-03 RTV4T - Jul 3, 08:45 UTCJul 3, 11:10 UTC2h 25m
2026-07-02 RTV4T - Jul 2, 14:05 UTCJul 2, 16:50 UTC2h 45m
2026-07-02 RTV4T - Jul 2, 11:00 UTCJul 2, 12:35 UTC1h 35m
2026-07-02 RTV4T - Jul 2, 08:20 UTCJul 2, 10:05 UTC1h 45m
2026-07-01 RTV4T - Jul 1, 14:45 UTCJul 1, 16:25 UTC1h 40m
2026-07-01 RTV4T - Jul 1, 08:40 UTCJul 1, 11:00 UTC2h 20m
2026-06-30 RTV4T - Jun 30, 13:55 UTCJun 30, 16:40 UTC2h 45m
2026-06-30 RTV4T - Jun 30, 09:30 UTCJun 30, 11:50 UTC2h 20m
2026-06-29 RTV4T - Jun 29, 08:19 UTCJun 29, 10:04 UTC1h 45m
2026-06-28 RTV4T - Jun 28, 14:59 UTCJun 28, 16:14 UTC1h 15m
2026-06-28 RTV4T - Jun 28, 11:45 UTCJun 28, 13:29 UTC1h 45m
2026-06-26 RTV4T - Jun 26, 08:40 UTCJun 26, 10:20 UTC1h 40m
2026-06-25 RTV4T - Jun 25, 14:04 UTCJun 25, 15:29 UTC1h 25m
2026-06-25 RTV4T - Jun 25, 08:09 UTCJun 25, 09:20 UTC1h 10m
2026-06-24 RTV4T - Jun 24, 14:45 UTCJun 24, 17:20 UTC2h 35m
2026-06-24 RTV4T - Jun 24, 09:15 UTCJun 24, 10:19 UTC1h 5m
2026-06-23 RTV4T - Jun 23, 14:35 UTCJun 23, 16:09 UTC1h 35m
2026-06-23 RTV4T - Jun 23, 10:19 UTCJun 23, 11:49 UTC1h 30m
2026-06-23 RTV4T - Jun 23, 08:09 UTCJun 23, 09:05 UTC55m
2026-06-22 RTV4T - Jun 22, 17:29 UTCJun 22, 18:35 UTC1h 5m
2026-06-22 RTV4T - Jun 22, 15:29 UTCJun 22, 16:14 UTC45m
2026-06-22 RTV4T - Jun 22, 13:54 UTCJun 22, 14:14 UTC20m
2026-06-22 RTV4T - Jun 22, 12:54 UTCJun 22, 13:05 UTC10m
2026-06-22 RTV4T - Jun 22, 11:04 UTCJun 22, 12:15 UTC1h 10m
2026-06-18 RTV4T - Jun 18, 15:15 UTCJun 18, 17:35 UTC2h 20m
2026-06-18 RTV4T - Jun 18, 12:10 UTCJun 18, 13:45 UTC1h 35m
2026-06-18 RTV4T - Jun 18, 08:55 UTCJun 18, 10:40 UTC1h 45m
2026-06-17 RTV4T - Jun 17, 13:45 UTCJun 17, 16:15 UTC2h 30m
2026-06-16 RTV4T - Jun 16, 17:30 UTCJun 16, 19:00 UTC1h 30m
2026-06-16 RTV4T - Jun 16, 15:05 UTCJun 16, 16:35 UTC1h 30m
2026-06-16 RTV4T - Jun 16, 13:50 UTCJun 16, 14:15 UTC25m
2026-06-16 RTV4T - Jun 16, 11:05 UTCJun 16, 12:45 UTC1h 40m
2026-06-15 RTV4T - Jun 15, 17:45 UTCJun 15, 18:10 UTC25m
2026-06-15 RTV4T - Jun 15, 15:59 UTCJun 15, 17:40 UTC1h 40m
2026-06-12 RTV4T - Jun 12, 16:35 UTCJun 12, 18:45 UTC2h 10m
2026-06-12 RTV4T - Jun 12, 14:35 UTCJun 12, 16:00 UTC1h 25m
2026-06-02 RTV4T - Jun 2, 15:50 UTCJun 2, 18:25 UTC2h 35m
2026-06-02 RTV4T - Jun 2, 11:10 UTCJun 2, 12:35 UTC1h 25m
2026-06-01 RTV4T - Jun 1, 14:35 UTCJun 1, 15:35 UTC1h 0m
2026-06-01 RTV4T - Jun 1, 09:50 UTCJun 1, 11:05 UTC1h 15m
2026-05-31 RTV4T - May 31, 12:50 UTCMay 31, 13:55 UTC1h 5m

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

Mode-S 491478 frequently asked

What is Mode-S code 491478?
491478 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-ECX.
Where is Mode-S 491478 registered?
Mode-S code 491478 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 491478 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 491478, octal 22212170, decimal 4,789,368.
What flights does 491478 operate?
Mode-S 491478 has broadcast 1 distinct callsign, including RTV4T.