Apparatus

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sensors Mode-S transponder

3C6641

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIRA · AIRBUS A-321

Hex
3C6641
Octal
17063101
Decimal
3,958,337
Country
DE
Tail
D-AIRA
Type
A321
Transponder active on ground
Flights observed
428
Distinct callsigns
20
Country
DE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3C6641.

Country allocation

The ICAO 24-bit address 3C6641 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
DLH9E - 5 2026-06-25
DLH1MK - 5 2026-06-25
DLH5LL - 4 2026-06-25
DLH4LM Lufthansa 4 2026-05-30
DLH3MA Lufthansa 4 2026-05-30
DLH3E - 4 2026-06-25
DLH8VL Lufthansa 3 2026-05-29
DLH83T - 3 2026-07-13
DLH7CE - 3 2026-07-15
DLH4WT Lufthansa 3 2026-05-29
DLH4NH - 3 2026-07-16
DLH4KV - 3 2026-07-16
DLH44K - 3 2026-07-17
DLH26C - 3 2026-07-08
DLH206 - 3 2026-07-07
DLH14C - 3 2026-07-17
DLH11Y - 3 2026-07-08
DLH05E - 3 2026-07-13
DLH9YP Lufthansa 2 2026-06-08
DLH9LL Lufthansa 2 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 DLH4WU - Jul 18, 04:55 UTCJul 18, 06:00 UTC1h 5m
2026-07-17 DLH9KY MUC → SBZ Jul 17, 20:29 UTCJul 17, 21:25 UTC55m
2026-07-17 DLH44K - Jul 17, 17:15 UTCJul 17, 19:15 UTC2h 0m
2026-07-17 DLH14C FRA → MAD Jul 17, 13:40 UTCJul 17, 15:49 UTC2h 10m
2026-07-17 DLH4HU - Jul 17, 10:10 UTCJul 17, 11:25 UTC1h 15m
2026-07-17 DLH6EM - Jul 17, 08:04 UTCJul 17, 09:15 UTC1h 10m
2026-07-17 DLH7EK - Jul 17, 04:54 UTCJul 17, 05:39 UTC45m
2026-07-16 DLH1WP FRA → HAM Jul 16, 17:14 UTCJul 16, 17:49 UTC35m
2026-07-16 DLH4KV HEL → FRA Jul 16, 11:20 UTCJul 16, 13:30 UTC2h 10m
2026-07-16 DLH4NH FRA → HEL Jul 16, 08:00 UTCJul 16, 10:15 UTC2h 15m
2026-07-16 DLH821 - Jul 16, 04:30 UTCJul 16, 05:50 UTC1h 20m
2026-07-15 DLH7CE FRA → GOT Jul 15, 20:30 UTCJul 15, 21:45 UTC1h 15m
2026-07-15 DLH3WJ - Jul 15, 17:50 UTCJul 15, 19:15 UTC1h 25m
2026-07-15 DLH5RX FRA → WAW Jul 15, 15:30 UTCJul 15, 16:45 UTC1h 15m
2026-07-15 DLH1323 - Jul 15, 11:30 UTCJul 15, 13:25 UTC1h 55m
2026-07-15 DLH1322 - Jul 15, 08:00 UTCJul 15, 09:55 UTC1h 55m
2026-07-15 DLH333 VCE → FRA Jul 15, 04:45 UTCJul 15, 06:00 UTC1h 15m
2026-07-14 DLH1RH FRA → VCE Jul 14, 20:00 UTCJul 14, 20:55 UTC55m
2026-07-14 DLH1301 - Jul 14, 15:35 UTCJul 14, 18:15 UTC2h 40m
2026-07-14 DLH1300 - Jul 14, 11:45 UTCJul 14, 14:10 UTC2h 25m
2026-07-13 DLH05E OPO → FRA Jul 13, 16:05 UTCJul 13, 18:05 UTC2h 0m
2026-07-13 DLH83T FRA → OPO Jul 13, 12:15 UTCJul 13, 14:45 UTC2h 30m
2026-07-13 DLH5AL DRS → FRA Jul 13, 08:45 UTCJul 13, 09:30 UTC45m
2026-07-13 DLH062 - Jul 13, 07:05 UTCJul 13, 07:40 UTC35m
2026-07-13 DLH899 VNO → FRA Jul 13, 03:50 UTCJul 13, 05:45 UTC1h 55m
2026-07-12 DLH898 FRA → VNO Jul 12, 20:01 UTCJul 12, 21:45 UTC1h 45m
2026-07-12 DLH309 - Jul 12, 16:20 UTCJul 12, 18:30 UTC2h 10m
2026-07-12 DLH4AR - Jul 12, 13:01 UTCJul 12, 15:01 UTC2h 0m
2026-07-12 DLH6PJ HAM → FRA Jul 12, 10:10 UTCJul 12, 11:01 UTC50m
2026-07-12 DLH1VR FRA → HAM Jul 12, 08:30 UTCJul 12, 09:10 UTC40m
2026-07-12 DLH5A - Jul 12, 06:20 UTCJul 12, 07:01 UTC40m
2026-07-11 DLH2HK FRA → AMS Jul 11, 19:30 UTCJul 11, 20:10 UTC40m
2026-07-11 DLH35U FAO → FRA Jul 11, 15:05 UTCJul 11, 17:35 UTC2h 30m
2026-07-11 DLH02T FRA → FAO Jul 11, 11:05 UTCJul 11, 13:50 UTC2h 45m
2026-07-11 DLH2NL - Jul 11, 07:15 UTCJul 11, 08:01 UTC45m
2026-07-11 DLH172 - Jul 11, 04:55 UTCJul 11, 05:35 UTC40m
2026-07-10 DLH99M ALC → FRA Jul 10, 17:05 UTCJul 10, 19:10 UTC2h 5m
2026-07-10 DLH93V - Jul 10, 12:15 UTCJul 10, 14:30 UTC2h 15m
2026-07-10 DLH4NM - Jul 10, 10:20 UTCJul 10, 11:00 UTC40m
2026-07-10 DLH1UP FRA → MUC Jul 10, 07:55 UTCJul 10, 08:25 UTC30m
2026-07-10 DLH1457 - Jul 10, 04:30 UTCJul 10, 06:25 UTC1h 55m
2026-07-09 DLH1456 - Jul 9, 19:50 UTCJul 9, 21:10 UTC1h 20m
2026-07-09 DLH35M LIS → FRA Jul 9, 12:15 UTCJul 9, 14:40 UTC2h 25m
2026-07-09 DLH39X FRA → LIS Jul 9, 08:15 UTCJul 9, 10:45 UTC2h 30m
2026-07-08 DLH5RM DUB → FRA Jul 8, 17:00 UTCJul 8, 18:30 UTC1h 30m
2026-07-08 DLH980 - Jul 8, 14:10 UTCJul 8, 15:45 UTC1h 35m
2026-07-08 DLH11Y BCN → FRA Jul 8, 11:05 UTCJul 8, 12:50 UTC1h 45m
2026-07-08 DLH26C FRA → BCN Jul 8, 08:15 UTCJul 8, 09:45 UTC1h 30m
2026-07-08 DLH9CJ - Jul 8, 05:05 UTCJul 8, 05:50 UTC45m
2026-07-07 DLH206 FRA → BER Jul 7, 19:55 UTCJul 7, 20:45 UTC50m

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

Mode-S 3C6641 frequently asked

What is Mode-S code 3C6641?
3C6641 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIRA.
Where is Mode-S 3C6641 registered?
Mode-S code 3C6641 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6641 broadcasting right now?
Mode-S 3C6641 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C6641, octal 17063101, decimal 3,958,337.
What flights does 3C6641 operate?
Mode-S 3C6641 has broadcast 20 distinct callsigns, including DLH9E, DLH1MK, DLH5LL, DLH4LM, DLH3MA.