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sensors Mode-S transponder

3C656B

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIKK · AIRBUS A-330-300

Hex
3C656B
Octal
17062553
Decimal
3,958,123
Country
DE
Tail
D-AIKK
Type
A333
No current signal · last broadcast 3h ago
Flights observed
122
Distinct callsigns
7
Country
DE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3C656B.

Country allocation

The ICAO 24-bit address 3C656B 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 7 distinct

Callsign Airline Flights Last seen
OCN143Y - 25 2026-07-17
OCN142 - 24 2026-07-17
OCN80 - 23 2026-07-14
OCN81 - 20 2026-07-15
OCN91 - 15 2026-07-12
OCN90 - 13 2026-07-11
OCN5 - 2 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 OCN142 - Jul 17, 20:04 UTCJul 17, 22:10 UTC2h 5m
2026-07-17 OCN143Y - Jul 17, 02:45 UTCJul 17, 04:25 UTC1h 40m
2026-07-15 OCN142 - Jul 15, 20:20 UTCJul 15, 22:20 UTC2h 0m
2026-07-15 OCN81 MCO → MUC Jul 15, 02:10 UTCJul 15, 11:25 UTC9h 15m
2026-07-14 OCN80 - Jul 14, 13:30 UTCJul 14, 23:05 UTC9h 34m
2026-07-13 OCN143Y - Jul 13, 21:45 UTCJul 14, 04:10 UTC6h 25m
2026-07-12 OCN142 - Jul 12, 20:05 UTCJul 12, 21:45 UTC1h 40m
2026-07-12 OCN91 YYC → MUC Jul 12, 01:45 UTCJul 12, 10:40 UTC8h 55m
2026-07-11 OCN90 MUC → YYC Jul 11, 14:00 UTCJul 11, 23:40 UTC9h 40m
2026-07-11 OCN81 MCO → MUC Jul 11, 02:15 UTCJul 11, 11:15 UTC9h 0m
2026-07-10 OCN80 MUC → MCO Jul 10, 13:35 UTCJul 10, 23:50 UTC10h 16m
2026-07-10 OCN143Y - Jul 10, 02:10 UTCJul 10, 04:15 UTC2h 5m
2026-07-08 OCN142 - Jul 8, 20:00 UTCJul 9, 02:00 UTC6h 0m
2026-07-08 OCN81 - Jul 8, 02:15 UTCJul 8, 11:30 UTC9h 15m
2026-07-07 OCN80 - Jul 7, 13:30 UTCJul 7, 23:30 UTC10h 0m
2026-07-07 OCN91 - Jul 7, 01:35 UTCJul 7, 10:25 UTC8h 50m
2026-07-06 OCN90 - Jul 6, 14:00 UTCJul 6, 23:35 UTC9h 35m
2026-07-06 OCN81 MCO → MUC Jul 6, 02:15 UTCJul 6, 11:05 UTC8h 50m
2026-07-05 OCN80 - Jul 5, 13:30 UTCJul 5, 23:30 UTC10h 0m
2026-07-04 OCN143Y - Jul 4, 21:45 UTCJul 5, 04:00 UTC6h 15m
2026-07-04 OCN142 - Jul 4, 02:10 UTCJul 4, 22:00 UTC19h 50m
2026-07-03 OCN142 - Jul 3, 20:10 UTCJul 4, 02:25 UTC6h 15m
2026-07-02 OCN143Y - Jul 2, 21:45 UTCJul 3, 03:55 UTC6h 10m
2026-07-02 OCN143Y - Jul 2, 03:25 UTCJul 3, 02:45 UTC23h 20m
2026-07-01 OCN142 - Jul 1, 20:05 UTCJul 2, 04:05 UTC8h 0m
2026-07-01 OCN81 MCO → MUC Jul 1, 02:35 UTCJul 1, 11:40 UTC9h 5m
2026-06-30 OCN80 MUC → MCO Jun 30, 13:40 UTCJun 30, 23:35 UTC9h 55m
2026-06-30 OCN91 YYC → MUC Jun 30, 01:30 UTCJun 30, 10:40 UTC9h 10m
2026-06-29 OCN90 MUC → YYC Jun 29, 14:19 UTCJun 29, 23:29 UTC9h 10m
2026-06-29 OCN81 MCO → MUC Jun 29, 02:25 UTCJun 29, 11:14 UTC8h 50m
2026-06-28 OCN80 MUC → MCO Jun 28, 13:29 UTCJun 28, 23:29 UTC10h 0m
2026-06-28 OCN143Y - Jun 28, 02:14 UTCJun 28, 04:25 UTC2h 10m
2026-06-26 OCN142 - Jun 26, 20:00 UTCJun 26, 21:55 UTC1h 55m
2026-06-26 OCN91 YYC → MUC Jun 26, 01:50 UTCJun 26, 10:55 UTC9h 5m
2026-06-25 OCN90 MUC → YYC Jun 25, 13:59 UTCJun 25, 23:30 UTC9h 30m
2026-06-24 OCN81 MCO → MUC Jun 24, 02:20 UTCJun 24, 11:05 UTC8h 45m
2026-06-23 OCN80 - Jun 23, 13:39 UTCJun 23, 23:44 UTC10h 5m
2026-06-22 OCN81 MCO → MUC Jun 22, 03:50 UTCJun 22, 12:49 UTC9h 0m
2026-06-21 OCN80 MUC → MCO Jun 21, 15:34 UTCJun 22, 01:35 UTC10h 0m
2026-06-21 OCN143Y - Jun 21, 01:55 UTCJun 21, 03:59 UTC2h 5m
2026-06-19 OCN142 - Jun 19, 20:04 UTCJun 19, 21:59 UTC1h 55m
2026-06-19 OCN91 YYC → MUC Jun 19, 02:04 UTCJun 19, 11:30 UTC9h 25m
2026-06-18 OCN90 MUC → YYC Jun 18, 14:55 UTCJun 19, 00:14 UTC9h 19m
2026-06-17 OCN81 - Jun 17, 02:55 UTCJun 17, 11:25 UTC8h 30m
2026-06-16 OCN80 MUC → MCO Jun 16, 13:44 UTCJun 17, 00:10 UTC10h 26m
2026-06-16 OCN143Y - Jun 16, 02:15 UTCJun 16, 04:30 UTC2h 15m
2026-06-15 OCN142 FRA → WDH Jun 15, 03:00 UTCJun 16, 02:45 UTC23h 45m
2026-06-14 OCN142 FRA → WDH Jun 14, 20:00 UTCJun 15, 03:40 UTC7h 39m
2026-06-14 OCN91 YYC → MUC Jun 14, 01:35 UTCJun 14, 10:40 UTC9h 5m
2026-06-13 OCN90 MUC → YYC Jun 13, 14:00 UTCJun 13, 23:25 UTC9h 25m

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

Mode-S 3C656B frequently asked

What is Mode-S code 3C656B?
3C656B is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIKK.
Where is Mode-S 3C656B registered?
Mode-S code 3C656B is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C656B 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 3C656B, octal 17062553, decimal 3,958,123.
What flights does 3C656B operate?
Mode-S 3C656B has broadcast 7 distinct callsigns, including OCN143Y, OCN142, OCN80, OCN81, OCN91.