Apparatus

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sensors Mode-S transponder

4D00D9

ICAO 24-bit transponder address · allocated to Luxembourg

Currently assigned to LX-LQI · DE HAVILLAND DHC-8-400 Dash 8

Hex
4D00D9
Octal
23200331
Decimal
5,046,489
Country
LU
Tail
LX-LQI
Type
DH8D
No current signal · last broadcast Jul 26, 18:40 UTC
Flights observed
612
Distinct callsigns
20
Country
LU
Last broadcast
Jul 26, 18:40 UTC

Last known position

Most recent position reported by Mode-S 4D00D9.

Country allocation

The ICAO 24-bit address 4D00D9 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 20 distinct

Callsign Airline Flights Last seen
LGL6V - 14 2026-07-08
LGL94LC - 13 2026-07-16
LGL4593 - 13 2026-07-16
LGL8854 - 12 2026-07-15
LGL853A - 12 2026-07-15
LGL41V - 12 2026-07-08
LGL8G Luxair 11 2026-07-24
LGL68M - 11 2026-07-12
LGL67M - 11 2026-07-12
LGL4602 Luxair 11 2026-07-24
LGL4601 Luxair 11 2026-07-24
LGL12F Luxair 11 2026-07-24
LGL98ED Luxair 10 2026-07-26
LGL9737 Luxair 10 2026-07-26
LGL852W Luxair 10 2026-07-25
LGL5L - 10 2026-07-15
LGL4606 - 10 2026-07-15
LGL4597 Luxair 10 2026-07-19
LGL9473 - 9 2026-07-20
LGL851W Luxair 9 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 LGL98ED MUC → LUX Jul 26, 17:45 UTCJul 26, 18:40 UTC55m
2026-07-26 LGL9737 LUX → MUC Jul 26, 15:50 UTCJul 26, 16:50 UTC1h 0m
2026-07-26 LGL22RQ FLR → LUX Jul 26, 13:35 UTCJul 26, 15:10 UTC1h 35m
2026-07-26 LGL521F LUX → FLR Jul 26, 10:50 UTCJul 26, 12:20 UTC1h 30m
2026-07-25 LGL464 TIV → LUX Jul 25, 16:00 UTCJul 25, 18:05 UTC2h 5m
2026-07-25 LGL463 LUX → BJV Jul 25, 12:05 UTCJul 25, 14:10 UTC2h 5m
2026-07-25 LGL852W VIE → LUX Jul 25, 07:55 UTCJul 25, 09:25 UTC1h 30m
2026-07-25 LGL851W LUX → VIE Jul 25, 05:05 UTCJul 25, 06:25 UTC1h 20m
2026-07-24 LGL4602 LCY → LUX Jul 24, 17:55 UTCJul 24, 18:55 UTC1h 0m
2026-07-24 LGL4601 LUX → LCY Jul 24, 16:05 UTCJul 24, 17:05 UTC1h 0m
2026-07-24 LGL452C MAN → LUX Jul 24, 12:20 UTCJul 24, 13:40 UTC1h 20m
2026-07-24 LGL4541 LUX → MAN Jul 24, 09:35 UTCJul 24, 11:10 UTC1h 35m
2026-07-24 LGL12F CDG → LUX Jul 24, 08:05 UTCJul 24, 08:40 UTC35m
2026-07-24 LGL8G XRY → AGP Jul 24, 05:40 UTCJul 24, 06:35 UTC55m
2026-07-23 LGL5436 CPH → LUX Jul 23, 19:05 UTCJul 23, 20:30 UTC1h 25m
2026-07-23 LGL35EK LUX → CPH Jul 23, 16:25 UTCJul 23, 18:00 UTC1h 35m
2026-07-23 LGL814P CDG → LUX Jul 23, 11:25 UTCJul 23, 12:00 UTC35m
2026-07-23 LGL3F LUX → FAO Jul 23, 08:55 UTCJul 23, 09:45 UTC50m
2026-07-23 LGL62M MXP → LUX Jul 23, 06:30 UTCJul 23, 07:40 UTC1h 10m
2026-07-23 LGL691M LUX → MXP Jul 23, 04:30 UTCJul 23, 05:30 UTC1h 0m
2026-07-22 LGL68G - Jul 22, 18:10 UTCJul 22, 18:55 UTC45m
2026-07-22 LGL67SG - Jul 22, 16:30 UTCJul 22, 17:20 UTC50m
2026-07-22 LGL38K CPH → LUX Jul 22, 14:00 UTCJul 22, 15:30 UTC1h 30m
2026-07-22 LGL7H - Jul 22, 11:35 UTCJul 22, 13:05 UTC1h 30m
2026-07-22 LGL5D - Jul 22, 04:50 UTCJul 22, 05:25 UTC35m
2026-07-21 LGL4602 LCY → LUX Jul 21, 18:30 UTCJul 21, 19:30 UTC1h 0m
2026-07-21 LGL4601 LUX → LCY Jul 21, 16:35 UTCJul 21, 17:40 UTC1h 5m
2026-07-21 LGL86MN NCE → LUX Jul 21, 13:25 UTCJul 21, 14:50 UTC1h 25m
2026-07-21 LGL8FM LUX → NCE Jul 21, 10:50 UTCJul 21, 12:15 UTC1h 25m
2026-07-21 LGL12F CDG → LUX Jul 21, 08:00 UTCJul 21, 08:35 UTC35m
2026-07-21 LGL8G XRY → AGP Jul 21, 05:40 UTCJul 21, 06:25 UTC45m
2026-07-20 LGL74BE BER → LUX Jul 20, 19:10 UTCJul 20, 20:25 UTC1h 15m
2026-07-20 LGL9473 - Jul 20, 17:00 UTCJul 20, 18:15 UTC1h 15m
2026-07-20 LGL96MC MXP → LUX Jul 20, 14:55 UTCJul 20, 16:05 UTC1h 10m
2026-07-20 LGL4732 EDI → LUX Jul 20, 14:05 UTCJul 20, 14:45 UTC40m
2026-07-20 LGL95EK LUX → MXP Jul 20, 12:40 UTCJul 20, 13:40 UTC1h 0m
2026-07-20 LGL814P CDG → LUX Jul 20, 11:05 UTCJul 20, 11:40 UTC35m
2026-07-20 LGL3F LUX → FAO Jul 20, 09:05 UTCJul 20, 09:50 UTC45m
2026-07-20 LGL92B LUX → LCY Jul 20, 06:50 UTCJul 20, 08:05 UTC1h 15m
2026-07-20 LGL91B LUX → BER Jul 20, 04:30 UTCJul 20, 05:45 UTC1h 15m
2026-07-19 LGL4L - Jul 19, 19:30 UTCJul 19, 20:25 UTC55m
2026-07-19 LGL4597 LUX → LCY Jul 19, 17:40 UTCJul 19, 18:45 UTC1h 5m
2026-07-19 LGL4604 LCY → LUX Jul 19, 15:45 UTCJul 19, 16:45 UTC1h 0m
2026-07-19 LGL4603 LUX → LCY Jul 19, 14:00 UTCJul 19, 15:05 UTC1h 5m
2026-07-19 LGL58HB BUD → LUX Jul 19, 10:15 UTCJul 19, 12:20 UTC2h 5m
2026-07-19 LGL5807 - Jul 19, 07:25 UTCJul 19, 09:15 UTC1h 50m
2026-07-18 LGL416 DBV → LUX Jul 18, 18:10 UTCJul 18, 20:35 UTC2h 25m
2026-07-18 LGL415 LUX → DBV Jul 18, 15:05 UTCJul 18, 17:10 UTC2h 5m
2026-07-18 LGL3422 GRO → LUX Jul 18, 12:15 UTCJul 18, 14:10 UTC1h 55m
2026-07-18 LGL21CB LUX → GRO Jul 18, 09:30 UTCJul 18, 11:20 UTC1h 50m

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

Mode-S 4D00D9 frequently asked

What is Mode-S code 4D00D9?
4D00D9 is an ICAO 24-bit transponder address. Allocated to Luxembourg. Assigned to LX-LQI.
Where is Mode-S 4D00D9 registered?
Mode-S code 4D00D9 is allocated to Luxembourg (LU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D00D9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D00D9, octal 23200331, decimal 5,046,489.
What flights does 4D00D9 operate?
Mode-S 4D00D9 has broadcast 20 distinct callsigns, including LGL6V, LGL94LC, LGL4593, LGL8854, LGL853A.