sensors Mode-S transponder

3C15BE

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AXGB · AIRBUS A-330-200

Hex
3C15BE
Octal
17012676
Decimal
3,937,726
Country
DE
Tail
D-AXGB
Type
A332
No current signal · last broadcast 11h ago
Flights observed
14
Distinct callsigns
5
Country
DE
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 3C15BE.

Country allocation

The ICAO 24-bit address 3C15BE 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 5 distinct

Callsign Airline Flights Last seen
OCN51 O Air 4 2026-04-17
OCN2107 O Air 4 2026-04-18
OCN50 O Air 3 2026-04-16
OCN2106 O Air 2 2026-04-17
OCN137 - 1 2026-04-12

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-18 OCN2107 LRM → FRA Apr 18, 05:25 UTCApr 18, 05:35 UTC10m
2026-04-18 OCN2107 LRM → FRA Apr 18, 04:45 UTCApr 18, 05:35 UTC50m
2026-04-18 OCN2107 LRM → FRA Apr 18, 03:30 UTCApr 18, 05:20 UTC1h 50m
2026-04-17 OCN2107 LRM → FRA Apr 17, 21:10 UTCApr 17, 21:20 UTC10m
2026-04-17 OCN2106 FRA → LRM Apr 17, 09:20 UTCApr 17, 10:20 UTC1h 0m
2026-04-17 OCN2106 FRA → LRM Apr 17, 08:40 UTCApr 17, 09:15 UTC35m
2026-04-17 OCN51 YHZ → FRA Apr 17, 05:20 UTCApr 17, 05:55 UTC35m
2026-04-17 OCN51 YHZ → FRA Apr 17, 03:55 UTCApr 17, 05:15 UTC1h 21m
2026-04-16 OCN51 YHZ → FRA Apr 16, 23:20 UTCApr 17, 00:15 UTC55m
2026-04-16 OCN51 YHZ → FRA Apr 16, 22:40 UTCApr 16, 23:10 UTC30m
2026-04-16 OCN50 FRA → PHL Apr 16, 19:15 UTCApr 16, 19:55 UTC40m
2026-04-16 OCN50 FRA → PHL Apr 16, 17:40 UTCApr 16, 19:10 UTC1h 30m
2026-04-16 OCN50 FRA → PHL Apr 16, 11:29 UTCApr 16, 13:05 UTC1h 35m
2026-04-12 OCN137 - Apr 12, 17:15 UTCApr 12, 18:50 UTC1h 35m

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

Mode-S 3C15BE frequently asked

What is Mode-S code 3C15BE?
3C15BE is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AXGB.
Where is Mode-S 3C15BE registered?
Mode-S code 3C15BE is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C15BE broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C15BE, octal 17012676, decimal 3,937,726.
What flights does 3C15BE operate?
Mode-S 3C15BE has broadcast 5 distinct callsigns, including OCN51, OCN2107, OCN50, OCN2106, OCN137.