Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3DDAF6

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-HDEC · AIRBUS HELICOPTERS EC-135/635

Hex
3DDAF6
Octal
17355366
Decimal
4,053,750
Country
DE
Tail
D-HDEC
Type
EC35
No current signal · last broadcast 9d ago
Flights observed
282
Distinct callsigns
2
Country
DE
Last broadcast
9d ago

Last known position

Most recent position reported by Mode-S 3DDAF6.

Country allocation

The ICAO 24-bit address 3DDAF6 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 2 distinct

Callsign Airline Flights Last seen
CHX16 - 277 2026-07-26
DHDEC - 5 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CHX16 - Jul 26, 11:55 UTCJul 26, 12:05 UTC10m
2026-07-26 CHX16 - Jul 26, 10:55 UTCJul 26, 11:10 UTC15m
2026-07-26 CHX16 - Jul 26, 05:35 UTCJul 26, 05:55 UTC20m
2026-07-25 CHX16 - Jul 25, 18:30 UTCJul 25, 18:40 UTC10m
2026-07-25 CHX16 - Jul 25, 12:55 UTCJul 25, 13:05 UTC10m
2026-07-25 CHX16 - Jul 25, 07:25 UTCJul 25, 07:35 UTC10m
2026-07-25 CHX16 - Jul 25, 06:20 UTCJul 25, 06:40 UTC20m
2026-07-23 CHX16 - Jul 23, 19:30 UTCJul 23, 19:40 UTC10m
2026-07-23 CHX16 - Jul 23, 18:45 UTCJul 23, 18:55 UTC10m
2026-07-23 CHX16 - Jul 23, 17:55 UTCJul 23, 18:05 UTC10m
2026-07-23 CHX16 - Jul 23, 09:55 UTCJul 23, 10:20 UTC25m
2026-07-23 CHX16 - Jul 23, 07:05 UTCJul 23, 07:35 UTC30m
2026-07-22 CHX16 - Jul 22, 18:45 UTCJul 22, 19:15 UTC30m
2026-07-22 CHX16 - Jul 22, 17:15 UTCJul 22, 17:55 UTC40m
2026-07-22 CHX16 - Jul 22, 12:15 UTCJul 22, 12:25 UTC10m
2026-07-21 CHX16 - Jul 21, 18:25 UTCJul 21, 18:55 UTC30m
2026-07-21 CHX16 - Jul 21, 17:40 UTCJul 21, 17:50 UTC10m
2026-07-21 CHX16 - Jul 21, 14:45 UTCJul 21, 14:55 UTC10m
2026-07-21 CHX16 - Jul 21, 14:00 UTCJul 21, 14:10 UTC10m
2026-07-21 CHX16 - Jul 21, 07:40 UTCJul 21, 07:50 UTC10m
2026-07-21 CHX16 - Jul 21, 06:20 UTCJul 21, 06:55 UTC35m
2026-07-20 CHX16 - Jul 20, 16:45 UTCJul 20, 17:30 UTC45m
2026-07-20 CHX16 - Jul 20, 14:40 UTCJul 20, 15:15 UTC35m
2026-07-20 CHX16 - Jul 20, 13:50 UTCJul 20, 14:00 UTC10m
2026-07-20 CHX16 - Jul 20, 07:35 UTCJul 20, 07:45 UTC10m
2026-07-19 CHX16 - Jul 19, 19:05 UTCJul 19, 19:45 UTC40m
2026-07-19 CHX16 - Jul 19, 17:55 UTCJul 19, 18:10 UTC15m
2026-07-19 CHX16 - Jul 19, 16:55 UTCJul 19, 17:20 UTC25m
2026-07-18 CHX16 - Jul 18, 09:50 UTCJul 18, 10:25 UTC35m
2026-07-17 CHX16 - Jul 17, 06:54 UTCJul 17, 09:30 UTC2h 35m
2026-07-16 CHX16 - Jul 16, 08:40 UTCJul 16, 09:05 UTC25m
2026-07-16 CHX16 - Jul 16, 07:30 UTCJul 16, 08:00 UTC30m
2026-07-16 CHX16 - Jul 16, 06:00 UTCJul 16, 06:15 UTC15m
2026-07-15 CHX16 - Jul 15, 16:00 UTCJul 15, 18:30 UTC2h 30m
2026-07-15 CHX16 - Jul 15, 14:20 UTCJul 15, 14:35 UTC15m
2026-07-15 CHX16 - Jul 15, 13:15 UTCJul 15, 13:25 UTC10m
2026-07-15 CHX16 - Jul 15, 11:20 UTCJul 15, 11:35 UTC15m
2026-07-15 CHX16 - Jul 15, 10:10 UTCJul 15, 10:50 UTC40m
2026-07-15 CHX16 - Jul 15, 08:10 UTCJul 15, 09:35 UTC1h 25m
2026-07-15 CHX16 - Jul 15, 06:55 UTCJul 15, 07:35 UTC40m
2026-07-14 CHX16 - Jul 14, 11:15 UTCJul 14, 12:00 UTC45m
2026-07-14 CHX16 - Jul 14, 08:00 UTCJul 14, 09:45 UTC1h 45m
2026-07-13 CHX16 - Jul 13, 16:25 UTCJul 13, 18:05 UTC1h 40m
2026-07-13 CHX16 - Jul 13, 15:35 UTCJul 13, 15:50 UTC15m
2026-07-13 CHX16 - Jul 13, 11:05 UTCJul 13, 11:40 UTC35m
2026-07-13 CHX16 - Jul 13, 08:01 UTCJul 13, 09:00 UTC1h 0m
2026-07-13 CHX16 - Jul 13, 06:55 UTCJul 13, 07:30 UTC35m
2026-07-13 CHX16 - Jul 13, 05:25 UTCJul 13, 05:35 UTC10m
2026-07-12 CHX16 - Jul 12, 12:50 UTCJul 12, 14:01 UTC1h 10m
2026-07-12 CHX16 - Jul 12, 12:10 UTCJul 12, 12:20 UTC10m

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

Mode-S 3DDAF6 frequently asked

What is Mode-S code 3DDAF6?
3DDAF6 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-HDEC.
Where is Mode-S 3DDAF6 registered?
Mode-S code 3DDAF6 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3DDAF6 broadcasting right now?
No active broadcast right now. Last signal was 9d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3DDAF6, octal 17355366, decimal 4,053,750.
What flights does 3DDAF6 operate?
Mode-S 3DDAF6 has broadcast 2 distinct callsigns, including CHX16, DHDEC.