Apparatus

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sensors Mode-S transponder

440D87

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-DDF · DIAMOND DA-40 Club Star

Hex
440D87
Octal
21006607
Decimal
4,459,911
Country
AT
Tail
OE-DDF
Type
DA40
No current signal · last broadcast 21m ago
Flights observed
109
Distinct callsigns
1
Country
AT
Last broadcast
21m ago

Last known position

Most recent position reported by Mode-S 440D87.

Country allocation

The ICAO 24-bit address 440D87 falls within the block assigned to Austria (AT) by ICAO Annex 10, Volume III. Every aircraft registered in Austria 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
OEDDF - 109 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 OEDDF - Jul 14, 19:25 UTCJul 14, 19:45 UTC20m
2026-07-14 OEDDF - Jul 14, 17:05 UTCJul 14, 17:55 UTC50m
2026-07-14 OEDDF - Jul 14, 12:10 UTCJul 14, 13:00 UTC50m
2026-07-14 OEDDF - Jul 14, 11:00 UTCJul 14, 11:15 UTC15m
2026-07-14 OEDDF - Jul 14, 09:30 UTCJul 14, 09:55 UTC25m
2026-07-14 OEDDF - Jul 14, 06:20 UTCJul 14, 07:05 UTC45m
2026-07-09 OEDDF - Jul 9, 10:50 UTCJul 9, 13:05 UTC2h 15m
2026-07-08 OEDDF - Jul 8, 12:55 UTCJul 8, 14:50 UTC1h 55m
2026-07-07 OEDDF - Jul 7, 08:10 UTCJul 7, 10:40 UTC2h 30m
2026-06-30 OEDDF - Jun 30, 15:30 UTCJun 30, 16:50 UTC1h 20m
2026-06-30 OEDDF - Jun 30, 12:20 UTCJun 30, 14:10 UTC1h 50m
2026-06-30 OEDDF - Jun 30, 09:10 UTCJun 30, 11:20 UTC2h 10m
2026-06-30 OEDDF - Jun 30, 06:25 UTCJun 30, 08:20 UTC1h 55m
2026-06-25 OEDDF - Jun 25, 06:09 UTCJun 25, 09:10 UTC3h 0m
2026-06-24 OEDDF - Jun 24, 13:44 UTCJun 24, 16:05 UTC2h 20m
2026-06-24 OEDDF - Jun 24, 09:45 UTCJun 24, 12:20 UTC2h 35m
2026-06-23 OEDDF - Jun 23, 12:29 UTCJun 23, 13:05 UTC35m
2026-06-23 OEDDF - Jun 23, 07:40 UTCJun 23, 10:19 UTC2h 40m
2026-06-22 OEDDF - Jun 22, 17:34 UTCJun 22, 20:04 UTC2h 30m
2026-06-22 OEDDF - Jun 22, 12:34 UTCJun 22, 13:14 UTC40m
2026-06-22 OEDDF - Jun 22, 10:55 UTCJun 22, 11:30 UTC35m
2026-06-20 OEDDF - Jun 20, 11:14 UTCJun 20, 12:59 UTC1h 45m
2026-06-19 OEDDF - Jun 19, 07:54 UTCJun 19, 10:04 UTC2h 10m
2026-06-17 OEDDF - Jun 17, 12:10 UTCJun 17, 12:55 UTC45m
2026-06-16 OEDDF - Jun 16, 10:55 UTCJun 16, 13:34 UTC2h 40m
2026-06-16 OEDDF - Jun 16, 06:30 UTCJun 16, 09:00 UTC2h 30m
2026-06-11 OEDDF - Jun 11, 14:20 UTCJun 11, 15:20 UTC1h 0m
2026-06-11 OEDDF - Jun 11, 13:05 UTCJun 11, 13:50 UTC45m
2026-06-11 OEDDF - Jun 11, 10:10 UTCJun 11, 10:50 UTC40m
2026-06-11 OEDDF - Jun 11, 08:30 UTCJun 11, 09:10 UTC40m
2026-06-09 OEDDF - Jun 9, 14:50 UTCJun 9, 15:50 UTC1h 0m
2026-06-09 OEDDF - Jun 9, 12:45 UTCJun 9, 14:00 UTC1h 15m
2026-06-09 OEDDF - Jun 9, 10:35 UTCJun 9, 12:15 UTC1h 40m
2026-06-09 OEDDF - Jun 9, 08:15 UTCJun 9, 09:40 UTC1h 25m
2026-06-08 OEDDF - Jun 8, 17:55 UTCJun 8, 20:50 UTC2h 55m
2026-06-05 OEDDF - Jun 5, 10:50 UTCJun 5, 13:10 UTC2h 20m
2026-06-04 OEDDF - Jun 4, 11:55 UTCJun 4, 12:10 UTC15m
2026-06-04 OEDDF - Jun 4, 09:55 UTCJun 4, 10:25 UTC30m
2026-06-04 OEDDF - Jun 4, 06:20 UTCJun 4, 09:00 UTC2h 40m
2026-06-03 OEDDF - Jun 3, 12:00 UTCJun 3, 13:55 UTC1h 55m
2026-06-03 OEDDF - Jun 3, 08:55 UTCJun 3, 11:15 UTC2h 20m
2026-05-29 OEDDF - May 29, 06:35 UTCMay 29, 08:30 UTC1h 55m
2026-05-28 OEDDF - May 28, 14:10 UTCMay 28, 15:15 UTC1h 5m
2026-05-27 OEDDF - May 27, 14:50 UTCMay 27, 16:55 UTC2h 5m
2026-05-26 OEDDF - May 26, 13:15 UTCMay 26, 13:54 UTC40m
2026-05-25 OEDDF - May 25, 06:55 UTCMay 25, 07:30 UTC35m
2026-05-23 OEDDF - May 23, 09:45 UTCMay 23, 11:40 UTC1h 55m
2026-05-22 OEDDF - May 22, 14:30 UTCMay 22, 15:10 UTC40m
2026-05-22 OEDDF - May 22, 12:45 UTCMay 22, 13:25 UTC40m
2026-05-22 OEDDF - May 22, 08:30 UTCMay 22, 10:50 UTC2h 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 OE-DDF page for operator, model, and routing details .

Mode-S 440D87 frequently asked

What is Mode-S code 440D87?
440D87 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-DDF.
Where is Mode-S 440D87 registered?
Mode-S code 440D87 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440D87 broadcasting right now?
No active broadcast right now. Last signal was 21m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440D87, octal 21006607, decimal 4,459,911.
What flights does 440D87 operate?
Mode-S 440D87 has broadcast 1 distinct callsign, including OEDDF.