sensors Mode-S transponder

49514A

ICAO 24-bit transponder address · allocated to Portugal

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

Hex
49514A
Octal
22250512
Decimal
4,804,938
Country
PT
Tail
CS-TJJ
Type
A21N
No current signal · last broadcast 15h ago
Flights observed
16
Distinct callsigns
7
Country
PT
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 49514A.

Country allocation

The ICAO 24-bit address 49514A 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 7 distinct

Callsign Airline Flights Last seen
TAP823 - 3 2026-04-13
TAP822W - 3 2026-04-13
TAP1544 TAP Portugal 3 2026-04-13
TAP13HL - 3 2026-04-13
TAP1369 - 2 2026-04-13
TAP1859 - 1 2026-04-14
TAP1361 - 1 2026-04-12

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 TAP1859 - Apr 14, 07:30 UTCApr 14, 07:55 UTC25m
2026-04-13 TAP1369 - Apr 13, 19:50 UTCApr 13, 21:05 UTC1h 15m
2026-04-13 TAP1369 - Apr 13, 19:00 UTCApr 13, 20:10 UTC1h 10m
2026-04-13 TAP13HL - Apr 13, 16:15 UTCApr 13, 17:45 UTC1h 30m
2026-04-13 TAP13HL - Apr 13, 15:50 UTCApr 13, 17:45 UTC1h 55m
2026-04-13 TAP13HL - Apr 13, 15:25 UTCApr 13, 16:15 UTC50m
2026-04-13 TAP823 - Apr 13, 12:20 UTCApr 13, 13:10 UTC50m
2026-04-13 TAP823 - Apr 13, 11:55 UTCApr 13, 13:10 UTC1h 15m
2026-04-13 TAP823 - Apr 13, 10:30 UTCApr 13, 12:15 UTC1h 45m
2026-04-13 TAP822W - Apr 13, 08:20 UTCApr 13, 09:10 UTC50m
2026-04-13 TAP822W - Apr 13, 07:55 UTCApr 13, 09:10 UTC1h 15m
2026-04-13 TAP822W - Apr 13, 06:45 UTCApr 13, 08:15 UTC1h 30m
2026-04-13 TAP1544 RAI → LIS Apr 13, 04:20 UTCApr 13, 05:20 UTC1h 0m
2026-04-13 TAP1544 RAI → LIS Apr 13, 03:55 UTCApr 13, 05:20 UTC1h 25m
2026-04-13 TAP1544 RAI → LIS Apr 13, 03:25 UTCApr 13, 04:15 UTC50m
2026-04-12 TAP1361 - Apr 12, 17:15 UTCApr 12, 18:30 UTC1h 15m

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

Mode-S 49514A frequently asked

What is Mode-S code 49514A?
49514A is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-TJJ.
Where is Mode-S 49514A registered?
Mode-S code 49514A is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 49514A broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 49514A, octal 22250512, decimal 4,804,938.
What flights does 49514A operate?
Mode-S 49514A has broadcast 7 distinct callsigns, including TAP823, TAP822W, TAP1544, TAP13HL, TAP1369.