Apparatus

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sensors Mode-S transponder

3C6523

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C6523
Octal
17062443
Decimal
3,958,051
Country
DE
Tail
D-AIIC
Type
A20N
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
591
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S 3C6523.

Country allocation

The ICAO 24-bit address 3C6523 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 20 distinct

Callsign Airline Flights Last seen
LHX98X - 16 2026-07-06
LHX8XV City Airlines 16 2026-07-26
LHX5KY - 16 2026-07-26
LHX11M - 16 2026-07-11
LHX06V - 16 2026-07-08
LHX96N - 15 2026-07-08
LHX7WT - 15 2026-07-26
LHX75U - 15 2026-07-18
LHX55C - 15 2026-07-26
LHX53U - 15 2026-07-12
LHX4EL City Airlines 15 2026-07-26
LHX6NE - 14 2026-07-22
LHX4KK City Airlines 14 2026-07-24
LHX3PP - 14 2026-07-24
LHX27W - 14 2026-07-18
LHX94M - 13 2026-07-18
LHX93A - 13 2026-07-18
LHX8WT - 13 2026-07-24
LHX6LL - 13 2026-07-20
LHX1KC - 13 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 LHX55C - Jul 26, 18:10 UTCJul 26, 20:10 UTC2h 0m
2026-07-26 LHX4EL CPH → MUC Jul 26, 15:45 UTCJul 26, 17:05 UTC1h 20m
2026-07-26 LHX7WT - Jul 26, 13:30 UTCJul 26, 14:45 UTC1h 15m
2026-07-26 LHX8XV FMO → MUC Jul 26, 10:15 UTCJul 26, 12:00 UTC1h 45m
2026-07-26 LHX5KY - Jul 26, 06:55 UTCJul 26, 08:40 UTC1h 45m
2026-07-25 LHX1705 SOF → MUC Jul 25, 16:40 UTCJul 25, 18:25 UTC1h 45m
2026-07-25 LHX1704 MUC → SOF Jul 25, 14:10 UTCJul 25, 15:40 UTC1h 30m
2026-07-25 LHX5JT - Jul 25, 10:15 UTCJul 25, 12:20 UTC2h 5m
2026-07-25 LHX9JC - Jul 25, 07:05 UTCJul 25, 09:10 UTC2h 5m
2026-07-24 LHX4KK MUC → DUS Jul 24, 17:00 UTCJul 24, 18:20 UTC1h 20m
2026-07-24 LHX3PP - Jul 24, 14:30 UTCJul 24, 16:00 UTC1h 30m
2026-07-24 LHX6MC - Jul 24, 11:30 UTCJul 24, 12:55 UTC1h 25m
2026-07-24 LHX6UW - Jul 24, 09:15 UTCJul 24, 10:20 UTC1h 5m
2026-07-24 LHX8WT - Jul 24, 06:25 UTCJul 24, 08:05 UTC1h 40m
2026-07-23 LHX1KC - Jul 23, 20:40 UTCJul 23, 22:35 UTC1h 55m
2026-07-23 LHX1TW - Jul 23, 17:40 UTCJul 23, 19:35 UTC1h 55m
2026-07-23 LHX6UY - Jul 23, 14:30 UTCJul 23, 16:25 UTC1h 55m
2026-07-23 LHX2397 BSL → MUC Jul 23, 12:15 UTCJul 23, 12:55 UTC40m
2026-07-23 LHX2396 MUC → BSL Jul 23, 09:55 UTCJul 23, 10:35 UTC40m
2026-07-23 LHX1889 NAP → MUC Jul 23, 07:20 UTCJul 23, 08:40 UTC1h 20m
2026-07-23 LHX1888 MUC → NAP Jul 23, 04:45 UTCJul 23, 05:55 UTC1h 10m
2026-07-22 LHX6NE - Jul 22, 11:10 UTCJul 22, 12:20 UTC1h 10m
2026-07-21 LHX55C - Jul 21, 18:05 UTCJul 21, 20:15 UTC2h 10m
2026-07-21 LHX4EL - Jul 21, 15:45 UTCJul 21, 16:50 UTC1h 5m
2026-07-21 LHX7WT - Jul 21, 13:25 UTCJul 21, 14:40 UTC1h 15m
2026-07-21 LHX3YX - Jul 21, 04:10 UTCJul 21, 06:05 UTC1h 55m
2026-07-20 LHX4CJ - Jul 20, 19:50 UTCJul 20, 21:25 UTC1h 35m
2026-07-20 LHX11U - Jul 20, 18:20 UTCJul 20, 19:00 UTC40m
2026-07-20 LHX02V TLS → MUC Jul 20, 16:55 UTCJul 20, 18:15 UTC1h 20m
2026-07-20 LHX11U - Jul 20, 14:25 UTCJul 20, 15:50 UTC1h 25m
2026-07-20 LHX6NE - Jul 20, 11:30 UTCJul 20, 12:45 UTC1h 15m
2026-07-20 LHX6LL - Jul 20, 08:50 UTCJul 20, 10:00 UTC1h 10m
2026-07-20 LHX02A VLC → MUC Jul 20, 05:40 UTCJul 20, 07:40 UTC2h 0m
2026-07-19 LHX55C - Jul 19, 19:20 UTCJul 19, 21:35 UTC2h 15m
2026-07-19 LHX4EL - Jul 19, 16:25 UTCJul 19, 17:30 UTC1h 5m
2026-07-19 LHX7WT - Jul 19, 13:35 UTCJul 19, 14:45 UTC1h 10m
2026-07-19 LHX8XV - Jul 19, 10:15 UTCJul 19, 12:05 UTC1h 50m
2026-07-19 LHX5KY - Jul 19, 07:05 UTCJul 19, 08:45 UTC1h 40m
2026-07-18 LHX5NH - Jul 18, 18:00 UTCJul 18, 19:15 UTC1h 15m
2026-07-18 LHX7LP - Jul 18, 15:25 UTCJul 18, 16:30 UTC1h 5m
2026-07-18 LHX27W - Jul 18, 12:50 UTCJul 18, 14:00 UTC1h 10m
2026-07-18 LHX75U - Jul 18, 10:20 UTCJul 18, 11:35 UTC1h 15m
2026-07-18 LHX93A BCN → MUC Jul 18, 07:20 UTCJul 18, 09:00 UTC1h 40m
2026-07-18 LHX94M MUC → BCN Jul 18, 04:35 UTCJul 18, 06:20 UTC1h 45m
2026-07-17 LHX4KK - Jul 17, 17:15 UTCJul 17, 18:44 UTC1h 30m
2026-07-17 LHX3PP - Jul 17, 14:39 UTCJul 17, 16:04 UTC1h 25m
2026-07-17 LHX6NE - Jul 17, 11:10 UTCJul 17, 12:25 UTC1h 15m
2026-07-17 LHX6LL - Jul 17, 08:40 UTCJul 17, 09:40 UTC1h 0m
2026-07-17 LHX02A VLC → MUC Jul 17, 05:20 UTCJul 17, 07:14 UTC1h 55m
2026-07-16 LHX55C MUC → MAD Jul 16, 18:40 UTCJul 16, 21:19 UTC2h 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 D-AIIC page for operator, model, and routing details .

Mode-S 3C6523 frequently asked

What is Mode-S code 3C6523?
3C6523 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIIC.
Where is Mode-S 3C6523 registered?
Mode-S code 3C6523 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6523 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C6523, octal 17062443, decimal 3,958,051.
What flights does 3C6523 operate?
Mode-S 3C6523 has broadcast 20 distinct callsigns, including LHX98X, LHX8XV, LHX5KY, LHX11M, LHX06V.