Apparatus

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sensors Mode-S transponder

3C6654

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIRT · AIRBUS A-321

Hex
3C6654
Octal
17063124
Decimal
3,958,356
Country
DE
Tail
D-AIRT
Type
A321
No current signal · last broadcast 3h ago
Flights observed
270
Distinct callsigns
20
Country
DE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3C6654.

Country allocation

The ICAO 24-bit address 3C6654 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
DLH9WT - 5 2026-07-12
DLH6VX - 5 2026-07-12
DLH8MW - 4 2026-07-17
DLH893 - 4 2026-07-14
DLH892 - 4 2026-07-13
DLH880 - 4 2026-07-14
DLH1RE - 4 2026-07-14
DLH1457 - 4 2026-07-06
DLH1456 - 4 2026-07-05
DLH9ML - 3 2026-07-02
DLH9CP - 3 2026-06-30
DLH9CJ Lufthansa 3 2026-05-06
DLH979 - 3 2026-07-12
DLH978 - 3 2026-07-12
DLH8YY - 3 2026-07-12
DLH8PK - 3 2026-06-30
DLH84H - 3 2026-07-08
DLH7VV - 3 2026-07-17
DLH5LX - 3 2026-07-03
DLH3C - 3 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DLH5XY ARN → FRA Jul 17, 20:44 UTCJul 17, 21:30 UTC45m
2026-07-17 DLH99M - Jul 17, 17:20 UTCJul 17, 19:20 UTC2h 0m
2026-07-17 DLH93V FRA → ALC Jul 17, 12:55 UTCJul 17, 15:25 UTC2h 30m
2026-07-17 DLH7VV VCE → FRA Jul 17, 09:20 UTCJul 17, 10:20 UTC1h 0m
2026-07-17 DLH8MW - Jul 17, 07:05 UTCJul 17, 08:10 UTC1h 5m
2026-07-17 DLH8MW FRA → FRA Jul 17, 05:39 UTCJul 17, 05:50 UTC10m
2026-07-17 DLH333 - Jul 17, 04:29 UTCJul 17, 05:30 UTC1h 0m
2026-07-16 DLH9855 - Jul 16, 17:40 UTCJul 16, 19:35 UTC1h 55m
2026-07-16 DLH8AU - Jul 16, 14:55 UTCJul 16, 15:55 UTC1h 0m
2026-07-16 DLH3RK MLA → FRA Jul 16, 11:20 UTCJul 16, 13:40 UTC2h 20m
2026-07-16 DLH4WE FRA → MLA Jul 16, 08:10 UTCJul 16, 10:15 UTC2h 5m
2026-07-16 DLH1JT - Jul 16, 03:40 UTCJul 16, 05:50 UTC2h 10m
2026-07-15 DLH1UT - Jul 15, 18:15 UTCJul 15, 19:55 UTC1h 40m
2026-07-15 DLH3EK - Jul 15, 14:55 UTCJul 15, 16:30 UTC1h 35m
2026-07-15 DLH3NX FRA → OSL Jul 15, 11:55 UTCJul 15, 13:35 UTC1h 40m
2026-07-15 DLH4RL - Jul 15, 04:55 UTCJul 15, 06:05 UTC1h 10m
2026-07-14 DLH1CJ - Jul 14, 19:15 UTCJul 14, 20:20 UTC1h 5m
2026-07-14 DLH6EE - Jul 14, 17:10 UTCJul 14, 17:50 UTC40m
2026-07-14 DLH4MW BER → FRA Jul 14, 15:00 UTCJul 14, 15:45 UTC45m
2026-07-14 DLH1RE TLL → FRA Jul 14, 10:55 UTCJul 14, 13:00 UTC2h 5m
2026-07-14 DLH880 - Jul 14, 07:55 UTCJul 14, 09:50 UTC1h 55m
2026-07-14 DLH893 - Jul 14, 03:50 UTCJul 14, 05:50 UTC2h 0m
2026-07-13 DLH892 - Jul 13, 19:10 UTCJul 13, 20:50 UTC1h 40m
2026-07-13 DLH7KW BEG → FRA Jul 13, 15:25 UTCJul 13, 17:05 UTC1h 40m
2026-07-13 DLH8UA FRA → BEG Jul 13, 12:50 UTCJul 13, 14:20 UTC1h 30m
2026-07-13 DLH1UL BUD → FRA Jul 13, 09:55 UTCJul 13, 11:20 UTC1h 25m
2026-07-13 DLH1CW FRA → BUD Jul 13, 07:50 UTCJul 13, 09:00 UTC1h 10m
2026-07-13 DLH6EJ BLL → FRA Jul 13, 04:10 UTCJul 13, 05:20 UTC1h 10m
2026-07-12 DLH4KW FRA → BLL Jul 12, 20:55 UTCJul 12, 21:50 UTC55m
2026-07-12 DLH9WT ARN → FRA Jul 12, 17:30 UTCJul 12, 19:20 UTC1h 50m
2026-07-12 DLH6VX - Jul 12, 14:35 UTCJul 12, 16:15 UTC1h 40m
2026-07-12 DLH979 - Jul 12, 11:55 UTCJul 12, 13:20 UTC1h 25m
2026-07-12 DLH978 - Jul 12, 08:55 UTCJul 12, 10:45 UTC1h 50m
2026-07-12 DLH3C ZRH → FRA Jul 12, 06:50 UTCJul 12, 07:31 UTC40m
2026-07-12 DLH8YY FRA → ZRH Jul 12, 04:45 UTCJul 12, 05:15 UTC30m
2026-07-11 DLH17P VLC → FRA Jul 11, 17:45 UTCJul 11, 19:45 UTC2h 0m
2026-07-11 DLH33A FRA → VLC Jul 11, 14:15 UTCJul 11, 16:15 UTC2h 0m
2026-07-11 DLH895 VNO → FRA Jul 11, 10:40 UTCJul 11, 12:30 UTC1h 50m
2026-07-11 DLH894 FRA → VNO Jul 11, 07:50 UTCJul 11, 09:35 UTC1h 45m
2026-07-11 DLH11A VLC → FRA Jul 11, 04:15 UTCJul 11, 06:20 UTC2h 5m
2026-07-10 DLH04U FRA → VLC Jul 10, 19:05 UTCJul 10, 21:15 UTC2h 10m
2026-07-10 DLH7LY ARN → FRA Jul 10, 15:40 UTCJul 10, 17:15 UTC1h 35m
2026-07-10 DLH804 FRA → ARN Jul 10, 12:05 UTCJul 10, 13:50 UTC1h 45m
2026-07-10 DLH7F CDG → FRA Jul 10, 09:50 UTCJul 10, 10:35 UTC45m
2026-07-10 DLH33M - Jul 10, 07:50 UTCJul 10, 08:35 UTC45m
2026-07-10 DLH1JT - Jul 10, 03:40 UTCJul 10, 05:50 UTC2h 10m
2026-07-09 DLH1UT - Jul 9, 18:05 UTCJul 9, 19:45 UTC1h 40m
2026-07-09 DLH9AV - Jul 9, 13:20 UTCJul 9, 14:50 UTC1h 30m
2026-07-09 DLH7XP - Jul 9, 10:50 UTCJul 9, 12:05 UTC1h 15m
2026-07-09 DLH1TT BUD → FRA Jul 9, 07:30 UTCJul 9, 09:00 UTC1h 30m

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

Mode-S 3C6654 frequently asked

What is Mode-S code 3C6654?
3C6654 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIRT.
Where is Mode-S 3C6654 registered?
Mode-S code 3C6654 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6654 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C6654, octal 17063124, decimal 3,958,356.
What flights does 3C6654 operate?
Mode-S 3C6654 has broadcast 20 distinct callsigns, including DLH9WT, DLH6VX, DLH8MW, DLH893, DLH892.