sensors Mode-S transponder

503EAA

ICAO 24-bit transponder address · allocated to Lithuania

Currently assigned to LY-TUI · BOEING 737-800

Hex
503EAA
Octal
24037252
Decimal
5,258,922
Country
LT
Tail
LY-TUI
Type
B738
No current signal · last broadcast 14h ago
Flights observed
11
Distinct callsigns
3
Country
LT
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 503EAA.

Country allocation

The ICAO 24-bit address 503EAA 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 3 distinct

Callsign Airline Flights Last seen
GJT8VZ Gestion Aerea Ajecutiva 5 2026-04-13
GJT9NV - 3 2026-04-14
GJT2XJ - 3 2026-04-13

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 GJT9NV - Apr 14, 09:10 UTCApr 14, 09:50 UTC40m
2026-04-14 GJT9NV - Apr 14, 07:20 UTCApr 14, 09:05 UTC1h 45m
2026-04-14 GJT9NV - Apr 14, 06:45 UTCApr 14, 06:55 UTC10m
2026-04-13 GJT2XJ - Apr 13, 19:50 UTCApr 13, 23:45 UTC3h 55m
2026-04-13 GJT2XJ - Apr 13, 19:25 UTCApr 13, 20:10 UTC45m
2026-04-13 GJT2XJ - Apr 13, 18:25 UTCApr 13, 18:35 UTC10m
2026-04-13 GJT8VZ VNO → FNC Apr 13, 16:15 UTCApr 13, 16:45 UTC30m
2026-04-13 GJT8VZ VNO → FNC Apr 13, 15:50 UTCApr 13, 16:45 UTC55m
2026-04-13 GJT8VZ VNO → FNC Apr 13, 12:20 UTCApr 13, 16:15 UTC3h 55m
2026-04-13 GJT8VZ VNO → FNC Apr 13, 11:55 UTCApr 13, 15:50 UTC3h 55m
2026-04-13 GJT8VZ VNO → FNC Apr 13, 11:30 UTCApr 13, 12:15 UTC45m

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

Mode-S 503EAA frequently asked

What is Mode-S code 503EAA?
503EAA is an ICAO 24-bit transponder address. Allocated to Lithuania. Assigned to LY-TUI.
Where is Mode-S 503EAA registered?
Mode-S code 503EAA is allocated to Lithuania (LT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 503EAA broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 503EAA, octal 24037252, decimal 5,258,922.
What flights does 503EAA operate?
Mode-S 503EAA has broadcast 3 distinct callsigns, including GJT8VZ, GJT9NV, GJT2XJ.