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 2h ago
Flights observed
279
Distinct callsigns
20
Country
LU
Last broadcast
2h ago

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 - 10 2026-05-29
LGL68M Luxair 9 2026-05-29
LGL67M Luxair 9 2026-05-29
LGL852W Luxair 8 2026-05-23
LGL41V Luxair 8 2026-05-29
LGL8854 Luxair 7 2026-05-27
LGL853A Luxair 7 2026-05-27
LGL851W Luxair 7 2026-05-23
LGL98ED Luxair 6 2026-05-27
LGL9737 Luxair 6 2026-05-27
LGL871B Luxair 5 2026-05-22
LGL8362 Luxair 5 2026-05-20
LGL4592 Luxair 5 2026-05-11
LGL4591 Luxair 5 2026-05-11
LGL361G Luxair 5 2026-05-20
LGL2B - 5 2026-05-22
LGL94LC Luxair 4 2026-05-29
LGL8G Luxair 4 2026-05-18
LGL84PQ Luxair 4 2026-05-15
LGL6495 Luxair 4 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 LGL472 BWK → LUX May 30, 08:10 UTCMay 30, 10:15 UTC2h 5m
2026-05-30 LGL471 LUX → BWK May 30, 04:35 UTCMay 30, 06:35 UTC2h 0m
2026-05-29 LGL68M MXP → LUX May 29, 21:20 UTCMay 29, 22:25 UTC1h 5m
2026-05-29 LGL67M LUX → MXP May 29, 18:15 UTCMay 29, 19:20 UTC1h 5m
2026-05-29 LGL6V - May 29, 15:45 UTCMay 29, 17:20 UTC1h 35m
2026-05-29 LGL41V LUX → VCE May 29, 13:05 UTCMay 29, 14:25 UTC1h 20m
2026-05-29 LGL94LC LCY → LUX May 29, 10:50 UTCMay 29, 11:50 UTC1h 0m
2026-05-29 LGL4593 LUX → LCY May 29, 08:55 UTCMay 29, 10:00 UTC1h 5m
2026-05-29 LGL92B LUX → LCY May 29, 06:55 UTCMay 29, 08:00 UTC1h 5m
2026-05-29 LGL91B LUX → BER May 29, 04:35 UTCMay 29, 05:45 UTC1h 10m
2026-05-28 LGL556R - May 28, 21:00 UTCMay 28, 23:00 UTC2h 0m
2026-05-28 LGL65R LUX → FCO May 28, 18:00 UTCMay 28, 20:20 UTC2h 20m
2026-05-28 LGL4GV GVA → LUX May 28, 16:00 UTCMay 28, 16:50 UTC50m
2026-05-28 LGL63SG LUX → GVA May 28, 14:25 UTCMay 28, 15:15 UTC50m
2026-05-28 LGL22RQ FLR → LUX May 28, 12:00 UTCMay 28, 13:35 UTC1h 35m
2026-05-28 LGL521F LUX → FLR May 28, 09:05 UTCMay 28, 10:35 UTC1h 30m
2026-05-27 LGL98ED MUC → LUX May 27, 19:50 UTCMay 27, 20:50 UTC1h 0m
2026-05-27 LGL9737 LUX → MUC May 27, 18:00 UTCMay 27, 18:50 UTC50m
2026-05-27 LGL8854 VIE → LUX May 27, 15:40 UTCMay 27, 17:10 UTC1h 30m
2026-05-27 LGL853A LUX → VIE May 27, 13:10 UTCMay 27, 14:40 UTC1h 30m
2026-05-27 LGL94LC LCY → LUX May 27, 11:10 UTCMay 27, 12:10 UTC1h 0m
2026-05-27 LGL4593 LUX → LCY May 27, 08:55 UTCMay 27, 10:05 UTC1h 10m
2026-05-27 LGL4606 LCY → LUX May 27, 07:10 UTCMay 27, 08:10 UTC1h 0m
2026-05-27 LGL5L LUX → LCY May 27, 05:14 UTCMay 27, 06:20 UTC1h 5m
2026-05-26 LGL98ED MUC → LUX May 26, 19:40 UTCMay 26, 20:40 UTC1h 0m
2026-05-26 LGL9737 LUX → MUC May 26, 17:35 UTCMay 26, 18:34 UTC1h 0m
2026-05-26 LGL8854 VIE → LUX May 26, 15:09 UTCMay 26, 16:40 UTC1h 30m
2026-05-26 LGL853A LUX → VIE May 26, 12:40 UTCMay 26, 14:09 UTC1h 30m
2026-05-26 LGL5434 CPH → LUX May 26, 07:19 UTCMay 26, 08:50 UTC1h 30m
2026-05-26 LGL5433 LUX → CPH May 26, 04:30 UTCMay 26, 05:59 UTC1h 30m
2026-05-25 LGL4EW DUB → LUX May 25, 20:09 UTCMay 25, 20:19 UTC10m
2026-05-25 LGL542K KRK → LUX May 25, 08:35 UTCMay 25, 10:20 UTC1h 45m
2026-05-25 LGL5741 LUX → KRK May 25, 05:30 UTCMay 25, 07:25 UTC1h 55m
2026-05-24 LGL6496 LIN → LUX May 24, 19:35 UTCMay 24, 20:40 UTC1h 5m
2026-05-24 LGL6495 LUX → LIN May 24, 18:10 UTCMay 24, 18:40 UTC30m
2026-05-24 LGL6495 LUX → LIN May 24, 17:40 UTCMay 24, 18:05 UTC25m
2026-05-24 LGL8854 VIE → LUX May 24, 15:10 UTCMay 24, 16:40 UTC1h 30m
2026-05-24 LGL853A LUX → VIE May 24, 12:45 UTCMay 24, 14:15 UTC1h 30m
2026-05-24 LGL814P CDG → LUX May 24, 11:15 UTCMay 24, 11:50 UTC35m
2026-05-24 LGL3F LUX → FAO May 24, 09:05 UTCMay 24, 09:50 UTC45m
2026-05-23 LGL416 DBV → LUX May 23, 18:15 UTCMay 23, 20:35 UTC2h 20m
2026-05-23 LGL415 LUX → DBV May 23, 15:15 UTCMay 23, 17:30 UTC2h 15m
2026-05-23 LGL92B LUX → LCY May 23, 12:45 UTCMay 23, 13:55 UTC1h 10m
2026-05-23 LGL91B LUX → BER May 23, 10:30 UTCMay 23, 11:45 UTC1h 15m
2026-05-23 LGL852W VIE → LUX May 23, 07:55 UTCMay 23, 09:25 UTC1h 30m
2026-05-23 LGL851W LUX → VIE May 23, 05:15 UTCMay 23, 06:45 UTC1h 30m
2026-05-22 LGL68G GVA → LUX May 22, 18:40 UTCMay 22, 19:25 UTC45m
2026-05-22 LGL67SG - May 22, 16:50 UTCMay 22, 17:45 UTC55m
2026-05-22 LGL2B BOD → LUX May 22, 14:15 UTCMay 22, 15:40 UTC1h 25m
2026-05-22 LGL871B LUX → BOD May 22, 11:40 UTCMay 22, 13:20 UTC1h 40m

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 2h ago.
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, LGL68M, LGL67M, LGL852W, LGL41V.