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sensors Mode-S transponder

3DDA97

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-HDAL

Hex
3DDA97
Octal
17355227
Decimal
4,053,655
Country
DE
Tail
D-HDAL
Type
R44
Broadcasting now · callsign DHDAL · 400 ft
Flights observed
9
Distinct callsigns
1
Country
DE
Last broadcast
21h ago

Current position

3DDA97 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3DDA97 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
DHDAL - 9 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 DHDAL - Apr 14, 09:10 UTCApr 14, 09:50 UTC40m
2026-04-14 DHDAL - Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 DHDAL - Apr 14, 06:55 UTCApr 14, 07:10 UTC15m
2026-04-13 DHDAL - Apr 13, 12:20 UTCApr 13, 13:50 UTC1h 30m
2026-04-13 DHDAL - Apr 13, 11:55 UTCApr 13, 13:50 UTC1h 55m
2026-04-13 DHDAL - Apr 13, 10:10 UTCApr 13, 12:15 UTC2h 5m
2026-04-13 DHDAL - Apr 13, 08:20 UTCApr 13, 09:30 UTC1h 10m
2026-04-13 DHDAL - Apr 13, 07:55 UTCApr 13, 09:30 UTC1h 35m
2026-04-13 DHDAL - Apr 13, 06:55 UTCApr 13, 08:15 UTC1h 20m

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

Mode-S 3DDA97 frequently asked

What is Mode-S code 3DDA97?
3DDA97 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-HDAL.
Where is Mode-S 3DDA97 registered?
Mode-S code 3DDA97 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3DDA97 broadcasting right now?
Yes. Mode-S 3DDA97 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3DDA97, octal 17355227, decimal 4,053,655.
What flights does 3DDA97 operate?
Mode-S 3DDA97 has broadcast 1 distinct callsign, including DHDAL.