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 Jul 26, 22:15 UTC
Flights observed
447
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 22:15 UTC

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
DLH8MW - 6 2026-07-12
DLH7VV - 6 2026-07-12
DLH26C Lufthansa 5 2026-07-25
DLH11Y Lufthansa 5 2026-07-25
DLH035 Lufthansa 5 2026-07-25
DLH9PL - 4 2026-07-13
DLH99M - 4 2026-07-11
DLH982 - 4 2026-07-12
DLH979 - 4 2026-07-13
DLH978 - 4 2026-07-13
DLH93V - 4 2026-07-11
DLH821 - 4 2026-07-12
DLH6VP Lufthansa 4 2026-07-26
DLH1WP Lufthansa 4 2026-07-24
DLH9KK Lufthansa 3 2026-06-03
DLH9EJ - 3 2026-07-16
DLH92J - 3 2026-06-15
DLH8PP - 3 2026-07-12
DLH883 - 3 2026-07-04
DLH882 - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH6VP FRA → ARN Jul 26, 20:45 UTCJul 26, 22:15 UTC1h 30m
2026-07-26 DLH77W FRA → AGP Jul 26, 17:30 UTCJul 26, 19:15 UTC1h 45m
2026-07-26 DLH54N FRA → BCN Jul 26, 14:15 UTCJul 26, 15:50 UTC1h 35m
2026-07-26 DLH1RE MUC → HEL Jul 26, 10:55 UTCJul 26, 13:05 UTC2h 10m
2026-07-26 DLH880 FRA → TLL Jul 26, 07:55 UTCJul 26, 09:45 UTC1h 50m
2026-07-25 DLH947 MAN → FRA Jul 25, 18:05 UTCJul 25, 19:15 UTC1h 10m
2026-07-25 DLH9YW FRA → MAN Jul 25, 14:45 UTCJul 25, 16:10 UTC1h 25m
2026-07-25 DLH11Y MUC → LIS Jul 25, 11:45 UTCJul 25, 13:10 UTC1h 25m
2026-07-25 DLH26C MUC → MAD Jul 25, 08:15 UTCJul 25, 10:00 UTC1h 45m
2026-07-25 DLH035 BRE → FRA Jul 25, 05:40 UTCJul 25, 06:35 UTC55m
2026-07-24 DLH1WP FRA → HAM Jul 24, 17:30 UTCJul 24, 18:15 UTC45m
2026-07-24 DLH4KV HAJ → FRA Jul 24, 11:20 UTCJul 24, 13:20 UTC2h 0m
2026-07-24 DLH4NH FRA → SJJ Jul 24, 08:05 UTCJul 24, 10:10 UTC2h 5m
2026-07-24 DLH035 BRE → FRA Jul 24, 05:45 UTCJul 24, 06:30 UTC45m
2026-07-23 DLH1WP FRA → HAM Jul 23, 17:15 UTCJul 23, 18:05 UTC50m
2026-07-23 DLH6KA - Jul 23, 12:40 UTCJul 23, 14:05 UTC1h 25m
2026-07-23 DLH3UX FCO → FRA Jul 23, 10:25 UTCJul 23, 11:35 UTC1h 10m
2026-07-23 DLH81H FRA → OPO Jul 23, 06:35 UTCJul 23, 08:40 UTC2h 5m
2026-07-22 DLH74U FRA → MAD Jul 22, 15:45 UTCJul 22, 17:55 UTC2h 10m
2026-07-22 DLH6KA BUD → FRA Jul 22, 12:25 UTCJul 22, 13:45 UTC1h 20m
2026-07-22 DLH3UX - Jul 22, 11:10 UTCJul 22, 11:30 UTC20m
2026-07-21 DLH67K - Jul 21, 19:25 UTCJul 21, 21:25 UTC2h 0m
2026-07-21 DLH77X SVQ → FRA Jul 21, 10:40 UTCJul 21, 13:05 UTC2h 25m
2026-07-21 DLH98C FRA → SVQ Jul 21, 06:50 UTCJul 21, 09:25 UTC2h 35m
2026-07-21 DLH6EJ DUB → FRA Jul 21, 04:25 UTCJul 21, 05:30 UTC1h 5m
2026-07-20 DLH4KW ATH → MUC Jul 20, 20:20 UTCJul 20, 21:20 UTC1h 0m
2026-07-20 DLH3WJ MUC → LHR Jul 20, 17:25 UTCJul 20, 18:55 UTC1h 30m
2026-07-20 DLH5RX FRA → WAW Jul 20, 15:05 UTCJul 20, 16:20 UTC1h 15m
2026-07-20 DLH3RK FRA → CPH Jul 20, 11:15 UTCJul 20, 13:35 UTC2h 20m
2026-07-20 DLH4WE FRA → MLA Jul 20, 07:55 UTCJul 20, 10:05 UTC2h 10m
2026-07-20 DLH5KW ARN → FRA Jul 20, 04:30 UTCJul 20, 06:10 UTC1h 40m
2026-07-19 DLH6VP FRA → ARN Jul 19, 20:35 UTCJul 19, 22:10 UTC1h 35m
2026-07-19 DLH341 CAG → FRA Jul 19, 17:25 UTCJul 19, 19:00 UTC1h 35m
2026-07-19 DLH340 FRA → GOA Jul 19, 14:25 UTCJul 19, 15:55 UTC1h 30m
2026-07-19 DLH1RE MUC → HEL Jul 19, 11:00 UTCJul 19, 13:05 UTC2h 5m
2026-07-19 DLH880 FRA → TLL Jul 19, 07:50 UTCJul 19, 09:45 UTC1h 55m
2026-07-19 DLH78H - Jul 19, 04:10 UTCJul 19, 06:05 UTC1h 55m
2026-07-18 DLH67K - Jul 18, 20:10 UTCJul 18, 22:15 UTC2h 5m
2026-07-18 DLH1322 FRA → FRA Jul 18, 08:05 UTCJul 18, 13:30 UTC5h 25m
2026-07-17 DLH51H - Jul 17, 16:29 UTCJul 17, 18:15 UTC1h 45m
2026-07-17 DLH04T - Jul 17, 13:35 UTCJul 17, 15:25 UTC1h 50m
2026-07-17 DLH2XV CPH → FRA Jul 17, 11:00 UTCJul 17, 12:04 UTC1h 5m
2026-07-17 DLH2EP FRA → CPH Jul 17, 08:49 UTCJul 17, 09:50 UTC1h 0m
2026-07-17 DLH5KW ARN → FRA Jul 17, 05:39 UTCJul 17, 07:25 UTC1h 45m
2026-07-16 DLH6VP FRA → ARN Jul 16, 20:55 UTCJul 16, 22:35 UTC1h 40m
2026-07-16 DLH963 - Jul 16, 17:40 UTCJul 16, 19:10 UTC1h 30m
2026-07-16 DLH2XH - Jul 16, 14:40 UTCJul 16, 16:09 UTC1h 30m
2026-07-16 DLH9EJ - Jul 16, 11:10 UTCJul 16, 13:15 UTC2h 5m
2026-07-16 DLH5MV FRA → OTP Jul 16, 08:00 UTCJul 16, 09:50 UTC1h 50m
2026-07-16 DLH2CF HEL → FRA Jul 16, 03:45 UTCJul 16, 06:05 UTC2h 20m

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 Jul 26, 22:15 UTC.
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 DLH8MW, DLH7VV, DLH26C, DLH11Y, DLH035.