sensors Mode-S transponder

4D00DB

ICAO 24-bit transponder address · allocated to Luxembourg

Currently assigned to LX-LEA · EMBRAER ERJ-190-400

Hex
4D00DB
Octal
23200333
Decimal
5,046,491
Country
LU
Tail
LX-LEA
Type
E295
No current signal · last broadcast 12h ago
Flights observed
10
Distinct callsigns
7
Country
LU
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 4D00DB.

Country allocation

The ICAO 24-bit address 4D00DB falls within the block assigned to Luxembourg (LU) by ICAO Annex 10, Volume III. Every aircraft registered in Luxembourg 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
LGL785 - 3 2026-04-13
LGL786 - 2 2026-04-13
LGL8W Luxair 1 2026-04-12
LGL857W - 1 2026-04-12
LGL5D - 1 2026-04-13
LGL53BK - 1 2026-04-13
LGL3591 - 1 2026-04-14

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 LGL3591 - Apr 14, 10:25 UTCApr 14, 11:05 UTC40m
2026-04-13 LGL786 - Apr 13, 19:50 UTCApr 13, 22:15 UTC2h 25m
2026-04-13 LGL786 - Apr 13, 19:30 UTCApr 13, 20:10 UTC40m
2026-04-13 LGL785 - Apr 13, 16:15 UTCApr 13, 18:05 UTC1h 50m
2026-04-13 LGL785 - Apr 13, 15:50 UTCApr 13, 18:05 UTC2h 15m
2026-04-13 LGL785 - Apr 13, 15:30 UTCApr 13, 16:15 UTC45m
2026-04-13 LGL53BK - Apr 13, 08:50 UTCApr 13, 10:20 UTC1h 30m
2026-04-13 LGL5D - Apr 13, 04:50 UTCApr 13, 06:20 UTC1h 30m
2026-04-12 LGL8W VIE → LUX Apr 12, 19:55 UTCApr 12, 20:15 UTC20m
2026-04-12 LGL857W - Apr 12, 17:15 UTCApr 12, 17:50 UTC35m

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 LX-LEA page for operator, model, and routing details .

Mode-S 4D00DB frequently asked

What is Mode-S code 4D00DB?
4D00DB is an ICAO 24-bit transponder address. Allocated to Luxembourg. Assigned to LX-LEA.
Where is Mode-S 4D00DB registered?
Mode-S code 4D00DB is allocated to Luxembourg (LU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D00DB broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D00DB, octal 23200333, decimal 5,046,491.
What flights does 4D00DB operate?
Mode-S 4D00DB has broadcast 7 distinct callsigns, including LGL785, LGL786, LGL8W, LGL857W, LGL5D.