sensors Mode-S transponder

503C48

ICAO 24-bit transponder address · allocated to Lithuania

Currently assigned to LY-WSA · AIRBUS A-321

Hex
503C48
Octal
24036110
Decimal
5,258,312
Country
LT
Tail
LY-WSA
Type
A321
No current signal · last broadcast 1d ago
Flights observed
9
Distinct callsigns
5
Country
LT
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 503C48.

Country allocation

The ICAO 24-bit address 503C48 falls within the block assigned to Lithuania (LT) by ICAO Annex 10, Volume III. Every aircraft registered in Lithuania 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 5 distinct

Callsign Airline Flights Last seen
VKG1793 - 3 2026-04-13
VKG1792 - 3 2026-04-13
VKG9240 - 1 2026-04-12
VKG4986 - 1 2026-04-13
VKG4926 SunClass Airlines 1 2026-04-12

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-13 VKG4986 - Apr 13, 20:10 UTCApr 13, 21:25 UTC1h 15m
2026-04-13 VKG1793 - Apr 13, 16:15 UTCApr 13, 19:15 UTC3h 0m
2026-04-13 VKG1793 - Apr 13, 15:50 UTCApr 13, 19:15 UTC3h 25m
2026-04-13 VKG1793 - Apr 13, 14:55 UTCApr 13, 16:15 UTC1h 20m
2026-04-13 VKG1792 - Apr 13, 12:20 UTCApr 13, 13:20 UTC1h 0m
2026-04-13 VKG1792 - Apr 13, 11:55 UTCApr 13, 13:20 UTC1h 25m
2026-04-13 VKG1792 - Apr 13, 09:30 UTCApr 13, 12:15 UTC2h 45m
2026-04-12 VKG4926 CPH → LPA Apr 12, 19:20 UTCApr 12, 20:15 UTC55m
2026-04-12 VKG9240 - Apr 12, 17:15 UTCApr 12, 18:05 UTC50m

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 LY-WSA page for operator, model, and routing details .

Mode-S 503C48 frequently asked

What is Mode-S code 503C48?
503C48 is an ICAO 24-bit transponder address. Allocated to Lithuania. Assigned to LY-WSA.
Where is Mode-S 503C48 registered?
Mode-S code 503C48 is allocated to Lithuania (LT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 503C48 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 503C48, octal 24036110, decimal 5,258,312.
What flights does 503C48 operate?
Mode-S 503C48 has broadcast 5 distinct callsigns, including VKG1793, VKG1792, VKG9240, VKG4986, VKG4926.