Apparatus

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sensors Mode-S transponder

3DD55F

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-HBBB · ROBINSON R-44 Raven

Hex
3DD55F
Octal
17352537
Decimal
4,052,319
Country
DE
Tail
D-HBBB
Type
R44
No current signal · last broadcast 1d ago
Flights observed
114
Distinct callsigns
1
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3DD55F.

Country allocation

The ICAO 24-bit address 3DD55F 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
DHBBB - 114 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 DHBBB - Jul 16, 07:25 UTCJul 16, 08:05 UTC40m
2026-07-05 DHBBB HAJ → HAJ Jul 5, 12:30 UTCJul 5, 16:30 UTC4h 0m
2026-07-05 DHBBB - Jul 5, 08:20 UTCJul 5, 11:50 UTC3h 30m
2026-07-04 DHBBB - Jul 4, 14:55 UTCJul 4, 15:05 UTC10m
2026-07-04 DHBBB - Jul 4, 06:35 UTCJul 4, 11:05 UTC4h 30m
2026-07-01 DHBBB HAJ → HAJ Jul 1, 17:25 UTCJul 1, 17:50 UTC25m
2026-07-01 DHBBB - Jul 1, 11:05 UTCJul 1, 11:15 UTC10m
2026-07-01 DHBBB - Jul 1, 10:05 UTCJul 1, 10:15 UTC10m
2026-06-28 DHBBB - Jun 28, 14:30 UTCJun 28, 15:20 UTC50m
2026-06-28 DHBBB - Jun 28, 13:00 UTCJun 28, 13:55 UTC55m
2026-06-28 DHBBB - Jun 28, 11:55 UTCJun 28, 12:29 UTC35m
2026-06-28 DHBBB - Jun 28, 06:40 UTCJun 28, 09:25 UTC2h 45m
2026-06-26 DHBBB - Jun 26, 18:20 UTCJun 26, 18:29 UTC10m
2026-06-26 DHBBB - Jun 26, 15:29 UTCJun 26, 16:00 UTC30m
2026-06-26 DHBBB - Jun 26, 14:09 UTCJun 26, 14:50 UTC40m
2026-06-26 DHBBB - Jun 26, 12:14 UTCJun 26, 12:44 UTC30m
2026-06-26 DHBBB - Jun 26, 09:59 UTCJun 26, 10:15 UTC15m
2026-06-26 DHBBB - Jun 26, 07:35 UTCJun 26, 07:55 UTC20m
2026-06-23 DHBBB - Jun 23, 12:09 UTCJun 23, 12:35 UTC25m
2026-06-23 DHBBB - Jun 23, 11:14 UTCJun 23, 11:24 UTC10m
2026-06-23 DHBBB - Jun 23, 07:45 UTCJun 23, 08:25 UTC40m
2026-06-22 DHBBB - Jun 22, 08:40 UTCJun 22, 08:54 UTC15m
2026-06-22 DHBBB - Jun 22, 07:19 UTCJun 22, 07:45 UTC25m
2026-06-21 DHBBB - Jun 21, 12:40 UTCJun 21, 13:00 UTC20m
2026-06-21 DHBBB - Jun 21, 09:10 UTCJun 21, 11:30 UTC2h 20m
2026-06-20 DHBBB - Jun 20, 09:54 UTCJun 20, 10:15 UTC20m
2026-06-20 DHBBB - Jun 20, 07:54 UTCJun 20, 08:59 UTC1h 5m
2026-06-19 DHBBB - Jun 19, 15:09 UTCJun 19, 15:39 UTC30m
2026-06-19 DHBBB - Jun 19, 09:40 UTCJun 19, 09:55 UTC15m
2026-06-19 DHBBB - Jun 19, 07:54 UTCJun 19, 08:34 UTC40m
2026-06-18 DHBBB HAJ → HAJ Jun 18, 07:00 UTCJun 18, 07:15 UTC15m
2026-06-16 DHBBB - Jun 16, 13:50 UTCJun 16, 14:05 UTC15m
2026-06-16 DHBBB - Jun 16, 12:20 UTCJun 16, 13:00 UTC40m
2026-06-13 DHBBB - Jun 13, 14:30 UTCJun 13, 16:25 UTC1h 55m
2026-06-13 DHBBB - Jun 13, 13:40 UTCJun 13, 13:50 UTC10m
2026-06-13 DHBBB - Jun 13, 12:25 UTCJun 13, 12:50 UTC25m
2026-06-13 DHBBB - Jun 13, 10:20 UTCJun 13, 10:30 UTC10m
2026-06-13 DHBBB - Jun 13, 09:05 UTCJun 13, 09:25 UTC20m
2026-06-13 DHBBB - Jun 13, 07:55 UTCJun 13, 09:00 UTC1h 5m
2026-06-13 DHBBB - Jun 13, 06:55 UTCJun 13, 07:15 UTC20m
2026-06-12 DHBBB - Jun 12, 12:35 UTCJun 12, 12:45 UTC10m
2026-06-12 DHBBB - Jun 12, 11:05 UTCJun 12, 11:20 UTC15m
2026-06-08 DHBBB - Jun 8, 09:05 UTCJun 8, 09:30 UTC25m
2026-06-08 DHBBB - Jun 8, 07:55 UTCJun 8, 08:30 UTC35m
2026-06-07 DHBBB - Jun 7, 13:50 UTCJun 7, 15:40 UTC1h 50m
2026-06-07 DHBBB - Jun 7, 08:45 UTCJun 7, 11:25 UTC2h 40m
2026-06-07 DHBBB - Jun 7, 06:15 UTCJun 7, 08:00 UTC1h 45m
2026-06-06 DHBBB - Jun 6, 17:54 UTCJun 6, 18:14 UTC20m
2026-06-06 DHBBB - Jun 6, 08:20 UTCJun 6, 08:30 UTC10m
2026-06-06 DHBBB - Jun 6, 07:05 UTCJun 6, 07:30 UTC25m

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

Mode-S 3DD55F frequently asked

What is Mode-S code 3DD55F?
3DD55F is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-HBBB.
Where is Mode-S 3DD55F registered?
Mode-S code 3DD55F is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3DD55F 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 3DD55F, octal 17352537, decimal 4,052,319.
What flights does 3DD55F operate?
Mode-S 3DD55F has broadcast 1 distinct callsign, including DHBBB.