sensors Mode-S transponder

3C4A02

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABPB · BOEING 787-9 Dreamliner

Hex
3C4A02
Octal
17045002
Decimal
3,951,106
Country
DE
Tail
D-ABPB
Type
B789
Broadcasting now · callsign DLH445 · 37,000 ft
Flights observed
6
Distinct callsigns
2
Country
DE
Last broadcast
1d ago

Current position

3C4A02 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C4A02 falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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 2 distinct

Callsign Airline Flights Last seen
DLH444 Lufthansa 4 2026-04-13
DLH569 - 2 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 DLH444 FRA → ATL Apr 13, 16:15 UTCApr 13, 17:35 UTC1h 20m
2026-04-13 DLH444 FRA → ATL Apr 13, 15:50 UTCApr 13, 17:35 UTC1h 45m
2026-04-13 DLH444 FRA → ATL Apr 13, 14:20 UTCApr 13, 16:15 UTC1h 55m
2026-04-13 DLH444 FRA → ATL Apr 13, 08:20 UTCApr 13, 10:25 UTC2h 5m
2026-04-13 DLH569 - Apr 13, 03:55 UTCApr 13, 04:10 UTC15m
2026-04-13 DLH569 - Apr 13, 02:25 UTCApr 13, 04:10 UTC1h 45m

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 D-ABPB page for operator, model, and routing details .

Mode-S 3C4A02 frequently asked

What is Mode-S code 3C4A02?
3C4A02 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABPB.
Where is Mode-S 3C4A02 registered?
Mode-S code 3C4A02 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4A02 broadcasting right now?
Yes. Mode-S 3C4A02 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4A02, octal 17045002, decimal 3,951,106.
What flights does 3C4A02 operate?
Mode-S 3C4A02 has broadcast 2 distinct callsigns, including DLH444, DLH569.