Apparatus

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sensors Mode-S transponder

3DCFFF

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-GZAD

Hex
3DCFFF
Octal
17347777
Decimal
4,050,943
Country
DE
Tail
D-GZAD
Type
DA42
No current signal · last broadcast 12h ago
Flights observed
101
Distinct callsigns
20
Country
DE
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 3DCFFF.

Country allocation

The ICAO 24-bit address 3DCFFF 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
PTO8876 - 5 2026-04-29
PTO8851 - 5 2026-07-13
PTO8842 - 5 2026-05-11
PTO8801 - 5 2026-06-08
PTO8853 - 4 2026-06-25
PTO8852 - 4 2026-06-04
PTO8845 - 4 2026-06-26
PTO8802 - 4 2026-06-08
PTO8879 - 3 2026-04-29
PTO8864 - 3 2026-04-22
PTO8841 - 3 2026-05-11
PTO8836 - 3 2026-06-10
PTO912 - 2 2026-06-24
PTO911 - 2 2026-06-24
PTO8878 - 2 2026-04-17
PTO8874 - 2 2026-06-15
PTO8862 - 2 2026-04-16
PTO8861 - 2 2026-04-16
PTO8857 - 2 2026-07-10
PTO8854 - 2 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 PTO8851 - Jul 13, 11:50 UTCJul 13, 14:25 UTC2h 35m
2026-07-13 PTO8850 - Jul 13, 08:10 UTCJul 13, 10:15 UTC2h 5m
2026-07-11 PTO8813 - Jul 11, 10:30 UTCJul 11, 12:40 UTC2h 10m
2026-07-11 PTO8812 - Jul 11, 07:40 UTCJul 11, 09:30 UTC1h 50m
2026-07-10 PTO8856 RLG → RLG Jul 10, 10:10 UTCJul 10, 12:00 UTC1h 50m
2026-07-10 PTO8857 - Jul 10, 07:05 UTCJul 10, 09:10 UTC2h 5m
2026-07-09 PTO8859 - Jul 9, 11:15 UTCJul 9, 13:20 UTC2h 5m
2026-07-09 PTO8857 - Jul 9, 08:15 UTCJul 9, 10:25 UTC2h 10m
2026-07-08 PTO8869 - Jul 8, 08:55 UTCJul 8, 09:25 UTC30m
2026-06-26 PTO8845 BWE → RLG Jun 26, 10:55 UTCJun 26, 13:15 UTC2h 20m
2026-06-26 PTO8843 - Jun 26, 07:39 UTCJun 26, 09:45 UTC2h 5m
2026-06-25 PTO8853 - Jun 25, 09:45 UTCJun 25, 12:19 UTC2h 35m
2026-06-24 PTO912 - Jun 24, 11:34 UTCJun 24, 13:50 UTC2h 15m
2026-06-24 PTO911 - Jun 24, 08:24 UTCJun 24, 10:39 UTC2h 15m
2026-06-17 PTO3325 - Jun 17, 16:35 UTCJun 17, 17:25 UTC50m
2026-06-17 PTO3325 - Jun 17, 15:05 UTCJun 17, 16:30 UTC1h 25m
2026-06-17 PTO3324 RLG → RKE Jun 17, 11:30 UTCJun 17, 14:00 UTC2h 30m
2026-06-15 PTO8874 RLG → RLG Jun 15, 12:30 UTCJun 15, 14:15 UTC1h 45m
2026-06-15 PTO8873 - Jun 15, 08:10 UTCJun 15, 09:49 UTC1h 40m
2026-06-12 PTO912 RLG → RLG Jun 12, 12:40 UTCJun 12, 15:00 UTC2h 20m
2026-06-12 PTO8845 RLG → RLG Jun 12, 08:30 UTCJun 12, 11:00 UTC2h 30m
2026-06-11 PTO8851 - Jun 11, 11:20 UTCJun 11, 13:40 UTC2h 20m
2026-06-11 PTO8850 - Jun 11, 08:00 UTCJun 11, 10:25 UTC2h 25m
2026-06-10 PTO8836 - Jun 10, 14:15 UTCJun 10, 16:30 UTC2h 15m
2026-06-10 PTO8835 - Jun 10, 11:00 UTCJun 10, 13:20 UTC2h 20m
2026-06-10 PTO8834 - Jun 10, 07:40 UTCJun 10, 09:55 UTC2h 15m
2026-06-08 PTO8805 - Jun 8, 13:20 UTCJun 8, 14:05 UTC45m
2026-06-08 PTO8802 - Jun 8, 11:35 UTCJun 8, 12:35 UTC1h 0m
2026-06-08 PTO8802 - Jun 8, 10:40 UTCJun 8, 11:00 UTC20m
2026-06-08 PTO8801 - Jun 8, 09:10 UTCJun 8, 10:00 UTC50m
2026-06-08 PTO8801 - Jun 8, 08:10 UTCJun 8, 08:30 UTC20m
2026-06-05 PTO8832 - Jun 5, 10:00 UTCJun 5, 12:20 UTC2h 20m
2026-06-05 PTO8831 - Jun 5, 06:30 UTCJun 5, 08:50 UTC2h 20m
2026-06-04 PTO8854 - Jun 4, 16:50 UTCJun 4, 18:45 UTC1h 55m
2026-06-04 PTO8853 - Jun 4, 13:00 UTCJun 4, 15:35 UTC2h 35m
2026-06-04 PTO8852 - Jun 4, 09:40 UTCJun 4, 11:25 UTC1h 45m
2026-06-04 PTO8852 - Jun 4, 09:20 UTCJun 4, 09:35 UTC15m
2026-06-04 PTO8851 - Jun 4, 06:40 UTCJun 4, 08:05 UTC1h 25m
2026-06-03 PTO8825 KEL → RLG Jun 3, 10:50 UTCJun 3, 12:35 UTC1h 45m
2026-06-03 PTO8824 RLG → KEL Jun 3, 08:00 UTCJun 3, 09:45 UTC1h 45m
2026-05-29 PTO8817 - May 29, 11:00 UTCMay 29, 13:20 UTC2h 20m
2026-05-29 PTO8816 - May 29, 07:05 UTCMay 29, 08:55 UTC1h 50m
2026-05-28 PTO8849 - May 28, 10:15 UTCMay 28, 12:30 UTC2h 15m
2026-05-27 PTO8835 - May 27, 12:10 UTCMay 27, 13:30 UTC1h 20m
2026-05-27 PTO8834 - May 27, 08:00 UTCMay 27, 08:55 UTC55m
2026-05-22 PTO8804 - May 22, 10:35 UTCMay 22, 12:40 UTC2h 5m
2026-05-21 PTO8855 DTM → RLG May 21, 14:35 UTCMay 21, 17:05 UTC2h 30m
2026-05-21 PTO8854 - May 21, 10:55 UTCMay 21, 13:05 UTC2h 10m
2026-05-21 PTO8853 - May 21, 07:50 UTCMay 21, 09:55 UTC2h 5m
2026-05-20 PTO8853 - May 20, 13:15 UTCMay 20, 15:30 UTC2h 15m

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

Mode-S 3DCFFF frequently asked

What is Mode-S code 3DCFFF?
3DCFFF is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-GZAD.
Where is Mode-S 3DCFFF registered?
Mode-S code 3DCFFF is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3DCFFF broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3DCFFF, octal 17347777, decimal 4,050,943.
What flights does 3DCFFF operate?
Mode-S 3DCFFF has broadcast 20 distinct callsigns, including PTO8876, PTO8851, PTO8842, PTO8801, PTO8853.