Apparatus

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sensors Mode-S transponder

3D166E

ICAO 24-bit transponder address · allocated to Germany

Hex
3D166E
Octal
17213156
Decimal
4,003,438
Country
DE
No current signal · last broadcast 1d ago
Flights observed
35
Distinct callsigns
1
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3D166E.

Country allocation

The ICAO 24-bit address 3D166E 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 1 distinct

Callsign Airline Flights Last seen
DEGTA - 35 2026-07-17

Recent flights last 35

DateFlightRouteTakeoffLandingDuration
2026-07-17 DEGTA - Jul 17, 14:55 UTCJul 17, 16:04 UTC1h 10m
2026-07-12 DEGTA - Jul 12, 09:25 UTCJul 12, 11:01 UTC1h 35m
2026-07-11 DEGTA - Jul 11, 12:30 UTCJul 11, 12:55 UTC25m
2026-07-10 DEGTA - Jul 10, 14:55 UTCJul 10, 15:15 UTC20m
2026-07-10 DEGTA - Jul 10, 14:05 UTCJul 10, 14:25 UTC20m
2026-07-10 DEGTA - Jul 10, 12:15 UTCJul 10, 13:15 UTC1h 0m
2026-07-09 DEGTA - Jul 9, 16:30 UTCJul 9, 17:55 UTC1h 25m
2026-07-09 DEGTA - Jul 9, 12:35 UTCJul 9, 13:25 UTC50m
2026-07-04 DEGTA - Jul 4, 15:35 UTCJul 4, 16:30 UTC55m
2026-07-04 DEGTA - Jul 4, 13:10 UTCJul 4, 13:55 UTC45m
2026-07-04 DEGTA - Jul 4, 10:40 UTCJul 4, 11:10 UTC30m
2026-07-03 DEGTA - Jul 3, 18:10 UTCJul 3, 18:40 UTC30m
2026-07-03 DEGTA - Jul 3, 15:45 UTCJul 3, 17:00 UTC1h 15m
2026-07-02 DEGTA - Jul 2, 15:50 UTCJul 2, 16:40 UTC50m
2026-06-29 DEGTA - Jun 29, 15:09 UTCJun 29, 15:49 UTC40m
2026-06-28 DEGTA - Jun 28, 17:55 UTCJun 28, 18:14 UTC20m
2026-06-28 DEGTA - Jun 28, 13:40 UTCJun 28, 15:20 UTC1h 40m
2026-06-27 DEGTA - Jun 27, 10:05 UTCJun 27, 10:40 UTC35m
2026-06-26 DEGTA - Jun 26, 14:39 UTCJun 26, 15:45 UTC1h 5m
2026-06-25 DEGTA - Jun 25, 15:04 UTCJun 25, 15:24 UTC20m
2026-06-25 DEGTA - Jun 25, 10:45 UTCJun 25, 12:04 UTC1h 20m
2026-06-25 DEGTA - Jun 25, 08:45 UTCJun 25, 09:50 UTC1h 5m
2026-06-20 DEGTA - Jun 20, 13:19 UTCJun 20, 14:09 UTC50m
2026-06-20 DEGTA - Jun 20, 11:40 UTCJun 20, 12:39 UTC1h 0m
2026-06-19 DEGTA - Jun 19, 11:34 UTCJun 19, 12:39 UTC1h 5m
2026-06-18 DEGTA - Jun 18, 15:10 UTCJun 18, 16:00 UTC50m
2026-06-17 DEGTA - Jun 17, 12:50 UTCJun 17, 13:50 UTC1h 0m
2026-06-14 DEGTA - Jun 14, 12:15 UTCJun 14, 13:15 UTC1h 0m
2026-06-14 DEGTA - Jun 14, 10:10 UTCJun 14, 10:50 UTC40m
2026-06-04 DEGTA - Jun 4, 09:20 UTCJun 4, 10:30 UTC1h 10m
2026-06-04 DEGTA - Jun 4, 07:45 UTCJun 4, 08:40 UTC55m
2026-06-03 DEGTA - Jun 3, 15:00 UTCJun 3, 16:15 UTC1h 15m
2026-05-31 DEGTA - May 31, 12:00 UTCMay 31, 12:25 UTC25m
2026-05-31 DEGTA - May 31, 08:30 UTCMay 31, 09:00 UTC30m
2026-05-30 DEGTA - May 30, 12:05 UTCMay 30, 12:55 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.

Mode-S 3D166E frequently asked

What is Mode-S code 3D166E?
3D166E is an ICAO 24-bit transponder address. Allocated to Germany.
Where is Mode-S 3D166E registered?
Mode-S code 3D166E is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3D166E broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3D166E, octal 17213156, decimal 4,003,438.
What flights does 3D166E operate?
Mode-S 3D166E has broadcast 1 distinct callsign, including DEGTA.