Apparatus

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sensors Mode-S transponder

3C6659

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIRY · AIRBUS A-321

Hex
3C6659
Octal
17063131
Decimal
3,958,361
Country
DE
Tail
D-AIRY
Type
A321
No current signal · last broadcast 2h ago
Flights observed
203
Distinct callsigns
20
Country
DE
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 3C6659.

Country allocation

The ICAO 24-bit address 3C6659 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
DLH9KK Lufthansa 3 2026-06-03
DLH821 Lufthansa 3 2026-05-26
DLH3WU Lufthansa 3 2026-06-03
DLH9TP Lufthansa 2 2026-05-25
DLH9PL Lufthansa 2 2026-06-03
DLH99M Lufthansa 2 2026-05-30
DLH982 Lufthansa 2 2026-06-02
DLH93V Lufthansa 2 2026-05-30
DLH8PP Lufthansa 2 2026-06-01
DLH804 Lufthansa 2 2026-05-27
DLH7LY Lufthansa 2 2026-05-27
DLH7FL Lufthansa 2 2026-05-22
DLH7CE Lufthansa 2 2026-05-25
DLH77W Lufthansa 2 2026-05-26
DLH6JT Lufthansa 2 2026-05-09
DLH54N Lufthansa 2 2026-05-26
DLH4WE Lufthansa 2 2026-06-05
DLH4UP Lufthansa 2 2026-06-01
DLH4P Lufthansa 2 2026-05-09
DLH4NH Lufthansa 2 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-05 DLH3RK FRA → CPH Jun 5, 11:20 UTCJun 5, 13:40 UTC2h 20m
2026-06-05 DLH4WE HAM → FRA Jun 5, 08:00 UTCJun 5, 10:10 UTC2h 10m
2026-06-04 DLH341 CAG → FRA Jun 4, 17:55 UTCJun 4, 19:30 UTC1h 35m
2026-06-04 DLH340 FRA → GOA Jun 4, 15:10 UTCJun 4, 16:40 UTC1h 30m
2026-06-04 DLH9LX FRA → BHX Jun 4, 11:25 UTCJun 4, 13:10 UTC1h 45m
2026-06-04 DLH1TN MUC → FRA Jun 4, 08:45 UTCJun 4, 10:15 UTC1h 30m
2026-06-04 DLH04C TLS → MUC Jun 4, 04:50 UTCJun 4, 06:30 UTC1h 40m
2026-06-03 DLH11F FRA → OPO Jun 3, 16:00 UTCJun 3, 17:40 UTC1h 40m
2026-06-03 DLH9KK BLQ → FRA Jun 3, 09:50 UTCJun 3, 10:35 UTC45m
2026-06-03 DLH3WU FRA → LHR Jun 3, 08:10 UTCJun 3, 09:00 UTC50m
2026-06-03 DLH9PL HAJ → FRA Jun 3, 05:10 UTCJun 3, 06:40 UTC1h 30m
2026-06-02 DLH982 FRA → DUB Jun 2, 19:20 UTCJun 2, 20:55 UTC1h 35m
2026-06-02 DLH2JT OSL → FRA Jun 2, 15:50 UTCJun 2, 18:00 UTC2h 10m
2026-06-02 DLH3UP FRA → BRE Jun 2, 11:50 UTCJun 2, 13:55 UTC2h 5m
2026-06-01 DLH4UP BLL → FRA Jun 1, 15:50 UTCJun 1, 18:10 UTC2h 20m
2026-06-01 DLH8PP FRA → STR Jun 1, 12:45 UTCJun 1, 14:45 UTC2h 0m
2026-06-01 DLH2AC MUC → OTP Jun 1, 09:50 UTCJun 1, 11:05 UTC1h 15m
2026-06-01 DLH3YY FRA → BRU Jun 1, 07:20 UTCJun 1, 08:40 UTC1h 20m
2026-05-31 DLH42Y LIS → FRA May 31, 18:45 UTCMay 31, 21:20 UTC2h 35m
2026-05-31 DLH03H MUC → BCN May 31, 14:00 UTCMay 31, 16:45 UTC2h 45m
2026-05-31 DLH3EJ FRA → LEJ May 31, 08:45 UTCMay 31, 10:45 UTC2h 0m
2026-05-30 DLH99M GRZ → FRA May 30, 16:00 UTCMay 30, 18:15 UTC2h 15m
2026-05-30 DLH93V FRA → ALC May 30, 12:25 UTCMay 30, 14:30 UTC2h 5m
2026-05-30 DLH3PF MUC → FRA May 30, 09:10 UTCMay 30, 10:35 UTC1h 25m
2026-05-30 DLH9LL MUC → CGN May 30, 06:15 UTCMay 30, 07:35 UTC1h 20m
2026-05-29 DLH12K FAO → FRA May 29, 15:35 UTCMay 29, 17:20 UTC1h 45m
2026-05-29 DLH62F FRA → BCN May 29, 12:40 UTCMay 29, 14:10 UTC1h 30m
2026-05-29 DLH6PJ ATH → FRA May 29, 10:10 UTCMay 29, 10:55 UTC45m
2026-05-29 DLH1VR FRA → HAM May 29, 08:25 UTCMay 29, 09:10 UTC45m
2026-05-29 DLH1EE FRA → LCY May 29, 06:15 UTCMay 29, 06:55 UTC40m
2026-05-27 DLH7EC MUC → DUS May 27, 18:35 UTCMay 27, 19:10 UTC35m
2026-05-27 DLH7LY BLL → FRA May 27, 15:20 UTCMay 27, 17:05 UTC1h 45m
2026-05-27 DLH804 FRA → ARN May 27, 11:55 UTCMay 27, 13:50 UTC1h 55m
2026-05-27 DLH249 MXP → FRA May 27, 09:30 UTCMay 27, 10:30 UTC1h 0m
2026-05-27 DLH6UA STR → MUC May 27, 07:30 UTCMay 27, 08:25 UTC55m
2026-05-27 DLH3WT LEJ → FRA May 27, 03:59 UTCMay 27, 05:29 UTC1h 30m
2026-05-26 DLH3NM GOT → GOT May 26, 20:29 UTCMay 26, 21:44 UTC1h 15m
2026-05-26 DLH77W FRA → AGP May 26, 17:25 UTCMay 26, 18:59 UTC1h 35m
2026-05-26 DLH54N FRA → BCN May 26, 14:30 UTCMay 26, 16:00 UTC1h 30m
2026-05-26 DLH821 GOT → FRA May 26, 06:14 UTCMay 26, 07:34 UTC1h 20m
2026-05-25 DLH7CE BRE → MUC May 25, 20:24 UTCMay 25, 21:45 UTC1h 20m
2026-05-25 DLH1YM FRA → OTP May 25, 17:45 UTCMay 25, 18:45 UTC1h 0m
2026-05-25 DLH1HT FRA → GLA May 25, 15:25 UTCMay 25, 16:25 UTC1h 0m
2026-05-25 DLH3AH BER → FRA May 25, 12:25 UTCMay 25, 14:00 UTC1h 35m
2026-05-25 DLH9TP FRA → DUB May 25, 09:15 UTCMay 25, 10:45 UTC1h 30m
2026-05-25 DLH92J BCN → MUC May 25, 05:15 UTCMay 25, 07:30 UTC2h 15m
2026-05-24 DLH44C FAO → FRA May 24, 19:40 UTCMay 24, 21:50 UTC2h 10m
2026-05-24 DLH7LY BLL → FRA May 24, 15:30 UTCMay 24, 17:15 UTC1h 45m
2026-05-24 DLH804 FRA → ARN May 24, 12:25 UTCMay 24, 14:10 UTC1h 45m
2026-05-24 DLH9JT JTR → MUC May 24, 09:00 UTCMay 24, 10:35 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-AIRY page for operator, model, and routing details .

Mode-S 3C6659 frequently asked

What is Mode-S code 3C6659?
3C6659 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIRY.
Where is Mode-S 3C6659 registered?
Mode-S code 3C6659 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6659 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C6659, octal 17063131, decimal 3,958,361.
What flights does 3C6659 operate?
Mode-S 3C6659 has broadcast 20 distinct callsigns, including DLH9KK, DLH821, DLH3WU, DLH9TP, DLH9PL.