sensors Mode-S transponder

49530D

ICAO 24-bit transponder address · allocated to Portugal

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

Hex
49530D
Octal
22251415
Decimal
4,805,389
Country
PT
Tail
CS-TXM
Type
A21N
Broadcasting now · callsign TAP218 · 33,000 ft
Flights observed
13
Distinct callsigns
6
Country
PT
Last broadcast
13h ago

Current position

49530D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 49530D 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 6 distinct

Callsign Airline Flights Last seen
TAP67M - 3 2026-04-13
TAP232Y TAP Portugal 3 2026-04-13
TAP1356 - 3 2026-04-13
TAP233 TAP Portugal 2 2026-04-13
TAP234Y - 1 2026-04-14
TAP231P - 1 2026-04-12

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 TAP234Y - Apr 14, 09:10 UTCApr 14, 09:40 UTC30m
2026-04-13 TAP233 RAK → LIS Apr 13, 22:10 UTCApr 13, 23:40 UTC1h 30m
2026-04-13 TAP233 RAK → LIS Apr 13, 16:50 UTCApr 13, 17:30 UTC40m
2026-04-13 TAP67M - Apr 13, 12:20 UTCApr 13, 13:05 UTC45m
2026-04-13 TAP67M - Apr 13, 11:55 UTCApr 13, 13:05 UTC1h 10m
2026-04-13 TAP67M - Apr 13, 10:45 UTCApr 13, 12:15 UTC1h 30m
2026-04-13 TAP1356 - Apr 13, 08:20 UTCApr 13, 09:20 UTC1h 0m
2026-04-13 TAP1356 - Apr 13, 07:55 UTCApr 13, 09:20 UTC1h 25m
2026-04-13 TAP1356 - Apr 13, 06:50 UTCApr 13, 08:15 UTC1h 25m
2026-04-13 TAP232Y IAD → LIS Apr 13, 04:25 UTCApr 13, 05:00 UTC35m
2026-04-13 TAP232Y IAD → LIS Apr 13, 00:20 UTCApr 13, 00:55 UTC35m
2026-04-12 TAP232Y IAD → LIS Apr 12, 23:55 UTCApr 13, 00:55 UTC1h 0m
2026-04-12 TAP231P - Apr 12, 17:50 UTCApr 12, 19:25 UTC1h 35m

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

Mode-S 49530D frequently asked

What is Mode-S code 49530D?
49530D is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TXM.
Where is Mode-S 49530D registered?
Mode-S code 49530D is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 49530D broadcasting right now?
Yes. Mode-S 49530D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 49530D, octal 22251415, decimal 4,805,389.
What flights does 49530D operate?
Mode-S 49530D has broadcast 6 distinct callsigns, including TAP67M, TAP232Y, TAP1356, TAP233, TAP234Y.