sensors Mode-S transponder

4D02BF

ICAO 24-bit transponder address · allocated to Luxembourg

Currently assigned to LX-FLR · PILATUS PC-12

Hex
4D02BF
Octal
23201277
Decimal
5,046,975
Country
LU
Tail
LX-FLR
Type
PC12
No current signal · last broadcast 13h ago
Flights observed
6
Distinct callsigns
4
Country
LU
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 4D02BF.

Country allocation

The ICAO 24-bit address 4D02BF 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 4 distinct

Callsign Airline Flights Last seen
JFA90U - 2 2026-04-13
JFA06H - 2 2026-04-13
JFA73E - 1 2026-04-14
JFA11P - 1 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 JFA73E - Apr 14, 10:40 UTCApr 14, 11:05 UTC25m
2026-04-13 JFA11P - Apr 13, 13:30 UTCApr 13, 14:20 UTC50m
2026-04-13 JFA06H - Apr 13, 11:55 UTCApr 13, 12:10 UTC15m
2026-04-13 JFA06H LTT → VIP Apr 13, 11:00 UTCApr 13, 12:10 UTC1h 10m
2026-04-13 JFA90U - Apr 13, 08:20 UTCApr 13, 09:05 UTC45m
2026-04-13 JFA90U - Apr 13, 08:05 UTCApr 13, 08:15 UTC10m

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

Mode-S 4D02BF frequently asked

What is Mode-S code 4D02BF?
4D02BF is an ICAO 24-bit transponder address. Allocated to Luxembourg. Assigned to LX-FLR.
Where is Mode-S 4D02BF registered?
Mode-S code 4D02BF is allocated to Luxembourg (LU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D02BF broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D02BF, octal 23201277, decimal 5,046,975.
What flights does 4D02BF operate?
Mode-S 4D02BF has broadcast 4 distinct callsigns, including JFA90U, JFA06H, JFA73E, JFA11P.