Apparatus

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sensors Mode-S transponder

3E191A

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-IARY · DIAMOND DA-62

Hex
3E191A
Octal
17414432
Decimal
4,069,658
Country
DE
Tail
D-IARY
Type
DA62
No current signal · last broadcast 14h ago
Flights observed
43
Distinct callsigns
1
Country
DE
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 3E191A.

Country allocation

The ICAO 24-bit address 3E191A 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
DIARY - 43 2026-05-29

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-05-29 DIARY - May 29, 09:40 UTCMay 29, 11:10 UTC1h 30m
2026-05-29 DIARY - May 29, 08:30 UTCMay 29, 08:55 UTC25m
2026-05-28 DIARY - May 28, 09:15 UTCMay 28, 10:50 UTC1h 35m
2026-05-27 DIARY - May 27, 12:55 UTCMay 27, 14:10 UTC1h 15m
2026-05-27 DIARY - May 27, 11:00 UTCMay 27, 11:50 UTC50m
2026-05-26 DIARY - May 26, 14:55 UTCMay 26, 15:49 UTC55m
2026-05-26 DIARY - May 26, 13:15 UTCMay 26, 14:09 UTC55m
2026-05-25 DIARY - May 25, 15:10 UTCMay 25, 17:05 UTC1h 55m
2026-05-22 DIARY - May 22, 13:45 UTCMay 22, 15:40 UTC1h 55m
2026-05-22 DIARY - May 22, 12:50 UTCMay 22, 13:05 UTC15m
2026-05-21 DIARY - May 21, 13:55 UTCMay 21, 14:15 UTC20m
2026-05-19 DIARY - May 19, 14:40 UTCMay 19, 15:45 UTC1h 5m
2026-05-18 DIARY - May 18, 16:20 UTCMay 18, 16:50 UTC30m
2026-05-16 DIARY SGE → SGE May 16, 10:05 UTCMay 16, 11:05 UTC1h 0m
2026-05-12 DIARY SGE → SGE May 12, 15:05 UTCMay 12, 16:35 UTC1h 30m
2026-05-12 DIARY SGE → SGE May 12, 12:20 UTCMay 12, 13:05 UTC45m
2026-05-12 DIARY - May 12, 06:15 UTCMay 12, 06:55 UTC40m
2026-05-10 DIARY - May 10, 09:20 UTCMay 10, 10:55 UTC1h 35m
2026-05-09 DIARY - May 9, 09:45 UTCMay 9, 10:40 UTC55m
2026-05-08 DIARY - May 8, 14:30 UTCMay 8, 16:10 UTC1h 40m
2026-05-08 DIARY - May 8, 11:30 UTCMay 8, 13:25 UTC1h 55m
2026-05-07 DIARY - May 7, 16:20 UTCMay 7, 17:40 UTC1h 20m
2026-05-07 DIARY - May 7, 13:35 UTCMay 7, 15:25 UTC1h 50m
2026-05-07 DIARY - May 7, 09:30 UTCMay 7, 09:55 UTC25m
2026-05-07 DIARY - May 7, 08:45 UTCMay 7, 09:15 UTC30m
2026-05-06 DIARY - May 6, 13:50 UTCMay 6, 14:15 UTC25m
2026-05-06 DIARY - May 6, 10:40 UTCMay 6, 13:05 UTC2h 25m
2026-04-30 DIARY - Apr 30, 14:05 UTCApr 30, 14:25 UTC20m
2026-04-27 DIARY - Apr 27, 10:45 UTCApr 27, 12:25 UTC1h 40m
2026-04-25 DIARY - Apr 25, 16:20 UTCApr 25, 16:35 UTC15m
2026-04-25 DIARY - Apr 25, 13:55 UTCApr 25, 15:10 UTC1h 15m
2026-04-25 DIARY - Apr 25, 08:35 UTCApr 25, 09:35 UTC1h 0m
2026-04-25 DIARY - Apr 25, 07:45 UTCApr 25, 08:00 UTC15m
2026-04-24 DIARY - Apr 24, 13:55 UTCApr 24, 14:20 UTC25m
2026-04-24 DIARY FDH → SGE Apr 24, 11:30 UTCApr 24, 12:45 UTC1h 15m
2026-04-23 DIARY SGE → FDH Apr 23, 09:10 UTCApr 23, 10:35 UTC1h 25m
2026-04-22 DIARY - Apr 22, 09:00 UTCApr 22, 09:45 UTC45m
2026-04-21 DIARY - Apr 21, 10:00 UTCApr 21, 11:35 UTC1h 35m
2026-04-16 DIARY - Apr 16, 15:15 UTCApr 16, 16:20 UTC1h 5m
2026-04-16 DIARY - Apr 16, 14:20 UTCApr 16, 15:10 UTC50m
2026-04-16 DIARY - Apr 16, 07:09 UTCApr 16, 08:15 UTC1h 5m
2026-04-16 DIARY - Apr 16, 06:20 UTCApr 16, 06:49 UTC30m
2026-04-13 DIARY - Apr 13, 13:30 UTCApr 13, 15:05 UTC1h 35m

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

Mode-S 3E191A frequently asked

What is Mode-S code 3E191A?
3E191A is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-IARY.
Where is Mode-S 3E191A registered?
Mode-S code 3E191A is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3E191A broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3E191A, octal 17414432, decimal 4,069,658.
What flights does 3E191A operate?
Mode-S 3E191A has broadcast 1 distinct callsign, including DIARY.