sensors Mode-S transponder

3C6550

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIJP · AIRBUS A-320neo

Hex
3C6550
Octal
17062520
Decimal
3,958,096
Country
DE
Tail
D-AIJP
Type
A20N
No current signal · last broadcast 15h ago
Flights observed
13
Distinct callsigns
6
Country
DE
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 3C6550.

Country allocation

The ICAO 24-bit address 3C6550 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 6 distinct

Callsign Airline Flights Last seen
LHX5H - 3 2026-04-14
LHX3KR - 3 2026-04-13
LHX924 City Airlines 2 2026-04-14
LHX7TA - 2 2026-04-14
LHX1U - 2 2026-04-13
LHX5U - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 LHX7TA - Apr 14, 10:20 UTCApr 14, 11:05 UTC45m
2026-04-14 LHX5H - Apr 14, 07:45 UTCApr 14, 08:45 UTC1h 0m
2026-04-14 LHX924 FRA → LHR Apr 14, 05:15 UTCApr 14, 06:25 UTC1h 10m
2026-04-13 LHX1U - Apr 13, 17:55 UTCApr 13, 18:55 UTC1h 0m
2026-04-13 LHX3KR - Apr 13, 16:15 UTCApr 13, 16:40 UTC25m
2026-04-13 LHX3KR - Apr 13, 15:50 UTCApr 13, 16:40 UTC50m
2026-04-13 LHX3KR - Apr 13, 15:25 UTCApr 13, 16:15 UTC50m
2026-04-13 LHX5U - Apr 13, 12:55 UTCApr 13, 14:00 UTC1h 5m
2026-04-13 LHX7TA FRA → LHR Apr 13, 10:25 UTCApr 13, 11:30 UTC1h 5m
2026-04-13 LHX5H - Apr 13, 08:20 UTCApr 13, 09:00 UTC40m
2026-04-13 LHX5H - Apr 13, 07:55 UTCApr 13, 08:15 UTC20m
2026-04-13 LHX924 FRA → LHR Apr 13, 05:25 UTCApr 13, 06:40 UTC1h 15m
2026-04-12 LHX1U - Apr 12, 18:45 UTCApr 12, 19:50 UTC1h 5m

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

Mode-S 3C6550 frequently asked

What is Mode-S code 3C6550?
3C6550 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIJP.
Where is Mode-S 3C6550 registered?
Mode-S code 3C6550 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6550 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C6550, octal 17062520, decimal 3,958,096.
What flights does 3C6550 operate?
Mode-S 3C6550 has broadcast 6 distinct callsigns, including LHX5H, LHX3KR, LHX924, LHX7TA, LHX1U.