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sensors Mode-S transponder

3C66E9

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIWI · AIRBUS A-320

Hex
3C66E9
Octal
17063351
Decimal
3,958,505
Country
DE
Tail
D-AIWI
Type
A320
Broadcasting now · callsign OCN75M · 4,450 ft
Flights observed
296
Distinct callsigns
20
Country
DE
Last broadcast
1h ago

Current position

3C66E9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C66E9 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
OCN4WJ - 15 2026-07-05
OCN8FE - 14 2026-07-05
OCN75M - 11 2026-07-14
OCN2Y O Air 11 2026-07-01
OCN1RK - 11 2026-07-01
OCN5Q O Air 10 2026-07-10
OCN6NH O Air 9 2026-06-15
OCN5MC - 9 2026-07-09
OCN515 O Air 9 2026-06-15
OCN2B - 9 2026-07-09
OCN9ZF - 8 2026-07-01
OCN8FC O Air 8 2026-07-13
OCN6HP O Air 8 2026-07-13
OCN4ES - 8 2026-07-01
OCN7YZ - 6 2026-07-04
OCN4EK - 6 2026-07-05
OCN3ME - 6 2026-07-04
OCN2WK - 6 2026-07-05
OCN6GP - 5 2026-07-05
OCN519 O Air 5 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 OCN75M - Jul 14, 10:25 UTCJul 14, 12:15 UTC1h 50m
2026-07-13 OCN8FC JTR → FRA Jul 13, 11:55 UTCJul 13, 14:45 UTC2h 50m
2026-07-13 OCN6HP FRA → JTR Jul 13, 07:55 UTCJul 13, 10:20 UTC2h 25m
2026-07-12 OCN8FC JTR → FRA Jul 12, 16:55 UTCJul 12, 19:40 UTC2h 45m
2026-07-12 OCN6HP FRA → JTR Jul 12, 13:10 UTCJul 12, 15:40 UTC2h 30m
2026-07-12 OCN2SD - Jul 12, 07:05 UTCJul 12, 09:50 UTC2h 45m
2026-07-12 OCN4LY - Jul 12, 03:10 UTCJul 12, 05:45 UTC2h 35m
2026-07-11 OCN7AK FRA → ACE Jul 11, 11:25 UTCJul 11, 20:35 UTC9h 10m
2026-07-11 OCN4YZ - Jul 11, 06:50 UTCJul 11, 09:20 UTC2h 30m
2026-07-11 OCN2KC - Jul 11, 03:10 UTCJul 11, 05:35 UTC2h 25m
2026-07-10 OCN5Q FNC → FNC Jul 10, 14:20 UTCJul 10, 18:10 UTC3h 50m
2026-07-10 OCN75M - Jul 10, 09:40 UTCJul 10, 12:55 UTC3h 15m
2026-07-10 OCN1001 MUC → FRA Jul 10, 05:35 UTCJul 10, 06:20 UTC45m
2026-07-10 OCN1000 FRA → MUC Jul 10, 03:55 UTCJul 10, 04:30 UTC35m
2026-07-09 OCN601 CDG → FRA Jul 9, 18:25 UTCJul 9, 19:10 UTC45m
2026-07-09 OCN600 FRA → CDG Jul 9, 16:05 UTCJul 9, 17:00 UTC55m
2026-07-09 OCN5MC DBV → FRA Jul 9, 13:05 UTCJul 9, 14:55 UTC1h 50m
2026-07-09 OCN2B FRA → DBV Jul 9, 10:45 UTCJul 9, 12:15 UTC1h 30m
2026-07-08 OCN519 PMI → FRA Jul 8, 15:45 UTCJul 8, 17:45 UTC2h 0m
2026-07-08 OCN518 FRA → PMI Jul 8, 12:45 UTCJul 8, 14:25 UTC1h 40m
2026-07-08 OCN4YZ DJE → FRA Jul 8, 06:25 UTCJul 8, 09:00 UTC2h 35m
2026-07-08 OCN2KC FRA → DJE Jul 8, 03:05 UTCJul 8, 05:25 UTC2h 20m
2026-07-07 OCN601 - Jul 7, 17:55 UTCJul 7, 18:45 UTC50m
2026-07-07 OCN600 - Jul 7, 15:50 UTCJul 7, 16:40 UTC50m
2026-07-07 OCN5MC DBV → FRA Jul 7, 13:00 UTCJul 7, 14:55 UTC1h 55m
2026-07-07 OCN2B FRA → DBV Jul 7, 10:35 UTCJul 7, 12:00 UTC1h 25m
2026-07-06 OCN519 PMI → FRA Jul 6, 15:35 UTCJul 6, 17:30 UTC1h 55m
2026-07-06 OCN518 FRA → PMI Jul 6, 12:30 UTCJul 6, 14:15 UTC1h 45m
2026-07-05 OCN2WK - Jul 5, 17:35 UTCJul 5, 18:55 UTC1h 20m
2026-07-05 OCN4EK - Jul 5, 15:15 UTCJul 5, 16:20 UTC1h 5m
2026-07-05 OCN8FE - Jul 5, 11:55 UTCJul 5, 13:55 UTC2h 0m
2026-07-05 OCN4WJ - Jul 5, 08:50 UTCJul 5, 10:35 UTC1h 45m
2026-07-05 OCN6GP - Jul 5, 05:40 UTCJul 5, 07:00 UTC1h 20m
2026-07-05 OCN910 - Jul 5, 03:25 UTCJul 5, 04:30 UTC1h 5m
2026-07-04 OCN3ME - Jul 4, 15:00 UTCJul 4, 18:05 UTC3h 5m
2026-07-04 OCN7YZ - Jul 4, 11:15 UTCJul 4, 13:40 UTC2h 25m
2026-07-04 OCN34D - Jul 4, 06:25 UTCJul 4, 08:50 UTC2h 25m
2026-07-04 OCN1408 - Jul 4, 03:20 UTCJul 4, 05:20 UTC2h 0m
2026-07-03 OCN601 - Jul 3, 18:45 UTCJul 3, 19:35 UTC50m
2026-07-03 OCN600 FRA → CDG Jul 3, 17:05 UTCJul 3, 17:50 UTC45m
2026-07-03 OCN519 PMI → FRA Jul 3, 14:10 UTCJul 3, 16:05 UTC1h 55m
2026-07-03 OCN518 FRA → PMI Jul 3, 10:45 UTCJul 3, 12:35 UTC1h 50m
2026-07-03 OCN8FE - Jul 3, 06:55 UTCJul 3, 08:55 UTC2h 0m
2026-07-03 OCN4WJ - Jul 3, 04:00 UTCJul 3, 05:45 UTC1h 45m
2026-07-02 OCN50P LCA → FRA Jul 2, 17:05 UTCJul 2, 20:40 UTC3h 35m
2026-07-02 OCN1FM FRA → LCA Jul 2, 12:35 UTCJul 2, 15:55 UTC3h 20m
2026-07-02 OCN6AR - Jul 2, 08:55 UTCJul 2, 10:45 UTC1h 50m
2026-07-02 OCN6MC - Jul 2, 05:45 UTCJul 2, 07:25 UTC1h 40m
2026-07-01 OCN2Y FNC → FRA Jul 1, 16:30 UTCJul 1, 20:10 UTC3h 40m
2026-07-01 OCN1RK - Jul 1, 15:20 UTCJul 1, 15:25 UTC5m

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

Mode-S 3C66E9 frequently asked

What is Mode-S code 3C66E9?
3C66E9 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIWI.
Where is Mode-S 3C66E9 registered?
Mode-S code 3C66E9 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66E9 broadcasting right now?
Yes. Mode-S 3C66E9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66E9, octal 17063351, decimal 3,958,505.
What flights does 3C66E9 operate?
Mode-S 3C66E9 has broadcast 20 distinct callsigns, including OCN4WJ, OCN8FE, OCN75M, OCN2Y, OCN1RK.