Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3DD1BD

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-GZRH · DIAMOND DA-42 Guardian

Hex
3DD1BD
Octal
17350675
Decimal
4,051,389
Country
DE
Tail
D-GZRH
Type
DA42
No current signal · last broadcast 4d ago
Flights observed
96
Distinct callsigns
20
Country
DE
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 3DD1BD.

Country allocation

The ICAO 24-bit address 3DD1BD 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
GAF529 - 21 2026-07-10
GAF519 - 8 2026-05-11
PTO7756 - 3 2026-06-17
PTO7753 - 3 2026-06-17
PTO7748 - 3 2026-05-03
PTO7746 - 3 2026-06-19
PTO7742 - 3 2026-06-15
PTO912 - 2 2026-06-16
PTO911 - 2 2026-06-16
PTO7783 - 2 2026-06-01
PTO7768 - 2 2026-06-04
PTO7767 - 2 2026-06-04
PTO7765 - 2 2026-06-04
PTO7749 - 2 2026-04-14
PTO7745 - 2 2026-06-15
PTO7740 - 2 2026-06-15
PTO7726 - 2 2026-05-26
PTO7724 - 2 2026-06-02
PTO7723 - 2 2026-06-02
GAF523 - 2 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 GAF529 - Jul 10, 07:55 UTCJul 10, 09:40 UTC1h 45m
2026-07-09 GAF523 - Jul 9, 13:30 UTCJul 9, 16:00 UTC2h 30m
2026-07-09 GAF523 - Jul 9, 09:45 UTCJul 9, 12:10 UTC2h 25m
2026-07-02 GAF529 WBG → RLG Jul 2, 08:50 UTCJul 2, 09:40 UTC50m
2026-07-02 GAF529 RLG → WBG Jul 2, 06:45 UTCJul 2, 07:45 UTC1h 0m
2026-07-01 PTO1568 - Jul 1, 13:35 UTCJul 1, 15:45 UTC2h 10m
2026-07-01 PTO1567 - Jul 1, 10:00 UTCJul 1, 12:10 UTC2h 10m
2026-06-27 PTO7761 - Jun 27, 08:29 UTCJun 27, 10:45 UTC2h 15m
2026-06-26 GAF529 RLG → RLG Jun 26, 07:00 UTCJun 26, 11:24 UTC4h 25m
2026-06-25 GAF529 - Jun 25, 10:04 UTCJun 25, 12:25 UTC2h 20m
2026-06-25 GAF529 - Jun 25, 06:25 UTCJun 25, 08:55 UTC2h 30m
2026-06-24 GAF529 HAJ → RLG Jun 24, 09:59 UTCJun 24, 10:59 UTC1h 0m
2026-06-23 GAF529 - Jun 23, 20:15 UTCJun 23, 21:20 UTC1h 5m
2026-06-22 GAF529 RLG → HAJ Jun 22, 14:14 UTCJun 22, 15:24 UTC1h 10m
2026-06-19 PTO7746 - Jun 19, 07:04 UTCJun 19, 08:59 UTC1h 55m
2026-06-18 PTO7736 - Jun 18, 16:40 UTCJun 18, 18:25 UTC1h 45m
2026-06-18 PTO7735 - Jun 18, 13:55 UTCJun 18, 15:40 UTC1h 45m
2026-06-18 GAF529 - Jun 18, 10:30 UTCJun 18, 12:45 UTC2h 15m
2026-06-18 GAF529 - Jun 18, 07:05 UTCJun 18, 09:05 UTC2h 0m
2026-06-17 PTO7756 - Jun 17, 16:00 UTCJun 17, 17:40 UTC1h 40m
2026-06-17 PTO7754 - Jun 17, 13:15 UTCJun 17, 14:55 UTC1h 40m
2026-06-17 PTO7753 - Jun 17, 10:00 UTCJun 17, 12:05 UTC2h 5m
2026-06-17 PTO7752 RLG → RLG Jun 17, 06:45 UTCJun 17, 09:00 UTC2h 15m
2026-06-16 PTO912 - Jun 16, 10:35 UTCJun 16, 13:00 UTC2h 25m
2026-06-16 PTO911 - Jun 16, 07:25 UTCJun 16, 09:45 UTC2h 20m
2026-06-15 PTO7745 - Jun 15, 12:10 UTCJun 15, 14:00 UTC1h 50m
2026-06-15 PTO7742 - Jun 15, 10:05 UTCJun 15, 11:00 UTC55m
2026-06-15 PTO7740 RLG → RLG Jun 15, 08:20 UTCJun 15, 09:05 UTC45m
2026-06-11 PTO7799 - Jun 11, 10:35 UTCJun 11, 13:05 UTC2h 30m
2026-06-11 PTO7798 RLG → RLG Jun 11, 07:10 UTCJun 11, 09:30 UTC2h 20m
2026-06-10 GAF529 - Jun 10, 14:40 UTCJun 10, 16:45 UTC2h 5m
2026-06-10 GAF529 RLG → RLG Jun 10, 11:55 UTCJun 10, 13:25 UTC1h 30m
2026-06-10 PTO7701 - Jun 10, 08:55 UTCJun 10, 10:35 UTC1h 40m
2026-06-09 GAF529 - Jun 9, 11:10 UTCJun 9, 13:40 UTC2h 30m
2026-06-09 GAF529 RLG → NUE Jun 9, 07:35 UTCJun 9, 09:45 UTC2h 10m
2026-06-04 PTO7768 - Jun 4, 16:00 UTCJun 4, 16:20 UTC20m
2026-06-04 PTO7768 - Jun 4, 13:30 UTCJun 4, 14:45 UTC1h 15m
2026-06-04 PTO7767 - Jun 4, 11:15 UTCJun 4, 12:05 UTC50m
2026-06-04 PTO7767 - Jun 4, 09:45 UTCJun 4, 10:40 UTC55m
2026-06-04 PTO7765 - Jun 4, 06:10 UTCJun 4, 08:15 UTC2h 5m
2026-06-03 PTO7743 - Jun 3, 13:05 UTCJun 3, 15:30 UTC2h 25m
2026-06-03 PTO7742 - Jun 3, 11:25 UTCJun 3, 11:55 UTC30m
2026-06-03 PTO7742 - Jun 3, 09:45 UTCJun 3, 10:50 UTC1h 5m
2026-06-03 PTO7741 - Jun 3, 06:15 UTCJun 3, 08:30 UTC2h 15m
2026-06-02 PTO7724 KEL → RLG Jun 2, 10:30 UTCJun 2, 12:40 UTC2h 10m
2026-06-02 PTO7723 - Jun 2, 07:10 UTCJun 2, 09:30 UTC2h 20m
2026-06-01 PTO7784 - Jun 1, 11:30 UTCJun 1, 13:45 UTC2h 15m
2026-06-01 PTO7783 - Jun 1, 07:30 UTCJun 1, 09:30 UTC2h 0m
2026-05-29 PTO7796 - May 29, 09:40 UTCMay 29, 11:50 UTC2h 10m
2026-05-29 PTO7795 - May 29, 06:30 UTCMay 29, 08:30 UTC2h 0m

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

Mode-S 3DD1BD frequently asked

What is Mode-S code 3DD1BD?
3DD1BD is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-GZRH.
Where is Mode-S 3DD1BD registered?
Mode-S code 3DD1BD is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3DD1BD broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3DD1BD, octal 17350675, decimal 4,051,389.
What flights does 3DD1BD operate?
Mode-S 3DD1BD has broadcast 20 distinct callsigns, including GAF529, GAF519, PTO7756, PTO7753, PTO7748.