sensors Mode-S transponder

494144

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-PJD · EMBRAER EMB-505 Phenom 300

Hex
494144
Octal
22240504
Decimal
4,800,836
Country
PT
Tail
CS-PJD
Type
E55P
No current signal · last broadcast 21h ago
Flights observed
5
Distinct callsigns
3
Country
PT
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S 494144.

Country allocation

The ICAO 24-bit address 494144 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 3 distinct

Callsign Airline Flights Last seen
NJE626E - 3 2026-04-13
NJE538B - 1 2026-04-12
NJE068E - 1 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 NJE068E LBG → VIP Apr 14, 05:45 UTCApr 14, 06:45 UTC1h 0m
2026-04-13 NJE626E - Apr 13, 12:20 UTCApr 13, 13:30 UTC1h 10m
2026-04-13 NJE626E - Apr 13, 11:55 UTCApr 13, 13:30 UTC1h 35m
2026-04-13 NJE626E - Apr 13, 11:05 UTCApr 13, 12:15 UTC1h 10m
2026-04-12 NJE538B - Apr 12, 17:15 UTCApr 12, 17:45 UTC30m

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

Mode-S 494144 frequently asked

What is Mode-S code 494144?
494144 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-PJD.
Where is Mode-S 494144 registered?
Mode-S code 494144 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 494144 broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 494144, octal 22240504, decimal 4,800,836.
What flights does 494144 operate?
Mode-S 494144 has broadcast 3 distinct callsigns, including NJE626E, NJE538B, NJE068E.