Apparatus

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sensors Mode-S transponder

491A49

ICAO 24-bit transponder address · allocated to Portugal

Hex
491A49
Octal
22215111
Decimal
4,790,857
Country
PT
No current signal · last broadcast 4h ago
Flights observed
88
Distinct callsigns
1
Country
PT
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 491A49.

Country allocation

The ICAO 24-bit address 491A49 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
DBT530 - 88 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 DBT530 - Jul 11, 16:35 UTCJul 11, 17:05 UTC30m
2026-07-11 DBT530 - Jul 11, 13:15 UTCJul 11, 14:05 UTC50m
2026-07-11 DBT530 - Jul 11, 11:20 UTCJul 11, 11:50 UTC30m
2026-07-11 DBT530 - Jul 11, 09:10 UTCJul 11, 10:15 UTC1h 5m
2026-07-10 DBT530 - Jul 10, 11:30 UTCJul 10, 12:10 UTC40m
2026-07-09 DBT530 - Jul 9, 13:00 UTCJul 9, 14:15 UTC1h 15m
2026-07-09 DBT530 - Jul 9, 10:05 UTCJul 9, 11:00 UTC55m
2026-07-07 DBT530 - Jul 7, 10:10 UTCJul 7, 10:40 UTC30m
2026-07-07 DBT530 - Jul 7, 06:25 UTCJul 7, 06:55 UTC30m
2026-07-06 DBT530 PSA → FLR Jul 6, 14:15 UTCJul 6, 14:30 UTC15m
2026-07-06 DBT530 ANE → PSA Jul 6, 06:55 UTCJul 6, 08:20 UTC1h 25m
2026-07-05 DBT530 - Jul 5, 14:55 UTCJul 5, 15:15 UTC20m
2026-07-05 DBT530 - Jul 5, 11:25 UTCJul 5, 13:05 UTC1h 40m
2026-07-05 DBT530 - Jul 5, 07:50 UTCJul 5, 08:45 UTC55m
2026-07-04 DBT530 - Jul 4, 12:00 UTCJul 4, 13:20 UTC1h 20m
2026-07-04 DBT530 ZRH → GVA Jul 4, 09:45 UTCJul 4, 10:20 UTC35m
2026-07-04 DBT530 IBZ → ZRH Jul 4, 06:20 UTCJul 4, 08:30 UTC2h 10m
2026-07-03 DBT530 - Jul 3, 17:20 UTCJul 3, 18:25 UTC1h 5m
2026-07-03 DBT530 - Jul 3, 14:55 UTCJul 3, 15:50 UTC55m
2026-07-02 DBT530 - Jul 2, 09:05 UTCJul 2, 10:55 UTC1h 50m
2026-07-02 DBT530 - Jul 2, 06:15 UTCJul 2, 06:55 UTC40m
2026-06-30 DBT530 - Jun 30, 15:10 UTCJun 30, 16:05 UTC55m
2026-06-30 DBT530 - Jun 30, 05:55 UTCJun 30, 06:55 UTC1h 0m
2026-06-29 DBT530 - Jun 29, 15:00 UTCJun 29, 15:34 UTC35m
2026-06-29 DBT530 - Jun 29, 12:24 UTCJun 29, 13:19 UTC55m
2026-06-28 DBT530 - Jun 28, 18:10 UTCJun 28, 19:04 UTC55m
2026-06-28 DBT530 - Jun 28, 14:25 UTCJun 28, 16:39 UTC2h 15m
2026-06-27 DBT530 ZRH → IBZ Jun 27, 13:35 UTCJun 27, 15:30 UTC1h 55m
2026-06-27 DBT530 - Jun 27, 08:14 UTCJun 27, 10:14 UTC2h 0m
2026-06-24 DBT530 - Jun 24, 12:04 UTCJun 24, 13:10 UTC1h 5m
2026-06-24 DBT530 ZRH → IBZ Jun 24, 08:49 UTCJun 24, 11:09 UTC2h 20m
2026-06-24 DBT530 - Jun 24, 06:20 UTCJun 24, 06:59 UTC40m
2026-06-23 DBT530 - Jun 23, 14:29 UTCJun 23, 15:40 UTC1h 10m
2026-06-23 DBT530 - Jun 23, 07:09 UTCJun 23, 07:29 UTC20m
2026-06-23 DBT530 - Jun 23, 04:55 UTCJun 23, 06:09 UTC1h 15m
2026-06-22 DBT530 - Jun 22, 13:29 UTCJun 22, 13:49 UTC20m
2026-06-22 DBT530 - Jun 22, 10:19 UTCJun 22, 11:44 UTC1h 25m
2026-06-22 DBT530 - Jun 22, 07:04 UTCJun 22, 08:50 UTC1h 45m
2026-06-22 DBT530 - Jun 22, 04:44 UTCJun 22, 05:24 UTC40m
2026-06-19 DBT530 - Jun 19, 13:54 UTCJun 19, 14:19 UTC25m
2026-06-16 DBT530 - Jun 16, 17:15 UTCJun 16, 17:40 UTC25m
2026-06-16 DBT530 MAN → BCN Jun 16, 13:25 UTCJun 16, 15:30 UTC2h 5m
2026-06-15 DBT530 - Jun 15, 10:35 UTCJun 15, 11:54 UTC1h 20m
2026-06-15 DBT530 BCN → LUX Jun 15, 07:29 UTCJun 15, 09:15 UTC1h 45m
2026-06-14 DBT530 IBZ → BCN Jun 14, 14:05 UTCJun 14, 14:45 UTC40m
2026-06-14 DBT530 - Jun 14, 10:45 UTCJun 14, 12:20 UTC1h 35m
2026-06-14 DBT530 LBG → PSA Jun 14, 07:20 UTCJun 14, 08:40 UTC1h 20m
2026-06-13 DBT530 NCE → LBG Jun 13, 12:40 UTCJun 13, 13:55 UTC1h 15m
2026-06-13 DBT530 TRN → NCE Jun 13, 10:55 UTCJun 13, 11:30 UTC35m
2026-06-13 DBT530 - Jun 13, 07:40 UTCJun 13, 08:40 UTC1h 0m

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.

Mode-S 491A49 frequently asked

What is Mode-S code 491A49?
491A49 is an ICAO 24-bit transponder address. Allocated to Portugal.
Where is Mode-S 491A49 registered?
Mode-S code 491A49 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 491A49 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 491A49, octal 22215111, decimal 4,790,857.
What flights does 491A49 operate?
Mode-S 491A49 has broadcast 1 distinct callsign, including DBT530.