Apparatus

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sensors Mode-S transponder

3EF30E

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-4727 · Schempp-Hirth Duo Discus

Hex
3EF30E
Octal
17571416
Decimal
4,125,454
Country
DE
Tail
D-4727
Type
GLID
No current signal · last broadcast 9d ago
Flights observed
30
Distinct callsigns
1
Country
DE
Last broadcast
9d ago

Last known position

Most recent position reported by Mode-S 3EF30E.

Country allocation

The ICAO 24-bit address 3EF30E 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
D4727 - 30 2026-06-06

Recent flights last 30

DateFlightRouteTakeoffLandingDuration
2026-06-06 D4727 FLF → FLF Jun 6, 11:49 UTCJun 6, 12:14 UTC25m
2026-06-06 D4727 FLF → FLF Jun 6, 10:25 UTCJun 6, 11:19 UTC55m
2026-06-06 D4727 FLF → FLF Jun 6, 09:00 UTCJun 6, 09:39 UTC40m
2026-05-31 D4727 FLF → FLF May 31, 13:10 UTCMay 31, 13:50 UTC40m
2026-05-31 D4727 FLF → FLF May 31, 09:55 UTCMay 31, 12:35 UTC2h 40m
2026-05-31 D4727 FLF → FLF May 31, 09:10 UTCMay 31, 09:20 UTC10m
2026-05-30 D4727 FLF → FLF May 30, 13:25 UTCMay 30, 14:00 UTC35m
2026-05-30 D4727 FLF → FLF May 30, 11:15 UTCMay 30, 12:15 UTC1h 0m
2026-05-30 D4727 FLF → FLF May 30, 09:05 UTCMay 30, 10:25 UTC1h 20m
2026-05-25 D4727 FLF → FLF May 25, 08:50 UTCMay 25, 11:45 UTC2h 55m
2026-05-24 D4727 FLF → FLF May 24, 11:45 UTCMay 24, 12:20 UTC35m
2026-05-24 D4727 FLF → FLF May 24, 10:15 UTCMay 24, 10:25 UTC10m
2026-05-24 D4727 FLF → FLF May 24, 09:25 UTCMay 24, 09:35 UTC10m
2026-05-23 D4727 FLF → FLF May 23, 11:00 UTCMay 23, 15:45 UTC4h 45m
2026-05-17 D4727 FLF → FLF May 17, 09:00 UTCMay 17, 09:30 UTC30m
2026-05-15 D4727 FLF → FLF May 15, 13:30 UTCMay 15, 14:05 UTC35m
2026-05-14 D4727 FLF → FLF May 14, 14:45 UTCMay 14, 15:01 UTC15m
2026-05-14 D4727 FLF → FLF May 14, 11:45 UTCMay 14, 13:10 UTC1h 25m
2026-05-14 D4727 FLF → FLF May 14, 10:05 UTCMay 14, 11:10 UTC1h 5m
2026-05-10 D4727 FLF → FLF May 10, 15:24 UTCMay 10, 15:35 UTC10m
2026-05-10 D4727 FLF → FLF May 10, 14:25 UTCMay 10, 14:34 UTC10m
2026-05-10 D4727 FLF → FLF May 10, 11:15 UTCMay 10, 13:55 UTC2h 40m
2026-05-09 D4727 FLF → FLF May 9, 15:35 UTCMay 9, 16:50 UTC1h 15m
2026-05-09 D4727 FLF → FLF May 9, 11:25 UTCMay 9, 14:55 UTC3h 30m
2026-05-09 D4727 FLF → FLF May 9, 09:20 UTCMay 9, 10:50 UTC1h 30m
2026-05-01 D4727 FLF → FLF May 1, 15:30 UTCMay 1, 15:40 UTC10m
2026-05-01 D4727 FLF → FLF May 1, 14:05 UTCMay 1, 14:50 UTC45m
2026-05-01 D4727 FLF → FLF May 1, 12:35 UTCMay 1, 13:00 UTC25m
2026-05-01 D4727 FLF → FLF May 1, 10:50 UTCMay 1, 12:00 UTC1h 10m
2026-04-26 D4727 FLF → FLF Apr 26, 15:55 UTCApr 26, 16:05 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-4727 page for operator, model, and routing details .

Mode-S 3EF30E frequently asked

What is Mode-S code 3EF30E?
3EF30E is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-4727.
Where is Mode-S 3EF30E registered?
Mode-S code 3EF30E is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3EF30E 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 3EF30E, octal 17571416, decimal 4,125,454.
What flights does 3EF30E operate?
Mode-S 3EF30E has broadcast 1 distinct callsign, including D4727.