Apparatus

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sensors Mode-S transponder

44003B

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-IDZ · GULFSTREAM G500

Hex
44003B
Octal
21000073
Decimal
4,456,507
Country
AT
Tail
OE-IDZ
Type
GA5C
No current signal · last broadcast 1d ago
Flights observed
87
Distinct callsigns
4
Country
AT
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 44003B.

Country allocation

The ICAO 24-bit address 44003B 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 4 distinct

Callsign Airline Flights Last seen
LDX69C - 48 2026-07-16
LDX69 - 35 2026-07-13
LDX069C - 2 2026-06-28
LDX069 - 2 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 LDX69C ATL → MMU Jul 16, 15:14 UTCJul 16, 17:05 UTC1h 50m
2026-07-14 LDX69C - Jul 14, 17:10 UTCJul 15, 00:15 UTC7h 4m
2026-07-14 LDX69C - Jul 14, 13:15 UTCJul 14, 15:30 UTC2h 15m
2026-07-13 LDX69 GVA → VIE Jul 13, 19:05 UTCJul 13, 20:15 UTC1h 10m
2026-07-13 LDX69 - Jul 13, 15:05 UTCJul 13, 15:50 UTC45m
2026-07-13 LDX69 - Jul 13, 12:10 UTCJul 13, 13:00 UTC50m
2026-07-12 LDX69C PRG → GVA Jul 12, 07:25 UTCJul 12, 08:35 UTC1h 10m
2026-07-12 LDX69C - Jul 12, 04:40 UTCJul 12, 05:50 UTC1h 10m
2026-07-11 LDX69C - Jul 11, 06:25 UTCJul 11, 09:00 UTC2h 35m
2026-07-11 LDX69C - Jul 11, 02:05 UTCJul 11, 04:15 UTC2h 10m
2026-07-10 LDX69C - Jul 10, 10:05 UTCJul 10, 14:00 UTC3h 55m
2026-07-10 LDX69C - Jul 10, 05:00 UTCJul 10, 06:15 UTC1h 15m
2026-07-08 LDX69C - Jul 8, 08:15 UTCJul 8, 10:45 UTC2h 30m
2026-07-07 LDX69 - Jul 7, 11:10 UTCJul 7, 12:05 UTC55m
2026-07-07 LDX69 - Jul 7, 06:35 UTCJul 7, 07:25 UTC50m
2026-07-05 LDX69 - Jul 5, 12:20 UTCJul 5, 14:20 UTC2h 0m
2026-07-05 LDX69 - Jul 5, 07:40 UTCJul 5, 09:40 UTC2h 0m
2026-07-04 LDX69C - Jul 4, 22:00 UTCJul 5, 04:10 UTC6h 10m
2026-07-03 LDX69C - Jul 3, 21:30 UTCJul 3, 22:40 UTC1h 10m
2026-07-02 LDX69C - Jul 2, 15:55 UTCJul 2, 17:45 UTC1h 50m
2026-06-30 LDX69C BMA → TEB Jun 30, 10:00 UTCJun 30, 17:10 UTC7h 10m
2026-06-29 LDX69C DBV → BMA Jun 29, 12:49 UTCJun 29, 15:00 UTC2h 10m
2026-06-28 LDX069C MAD → DBV Jun 28, 09:20 UTCJun 28, 11:35 UTC2h 15m
2026-06-27 LDX069C - Jun 27, 18:39 UTCJun 27, 20:04 UTC1h 25m
2026-06-27 LDX69 - Jun 27, 14:54 UTCJun 27, 16:59 UTC2h 5m
2026-06-27 LDX69 - Jun 27, 11:39 UTCJun 27, 12:39 UTC1h 0m
2026-06-26 LDX69C - Jun 26, 15:49 UTCJun 26, 17:50 UTC2h 0m
2026-06-24 LDX69C - Jun 24, 14:50 UTCJun 24, 16:29 UTC1h 40m
2026-06-23 LDX69C - Jun 23, 11:10 UTCJun 23, 13:00 UTC1h 50m
2026-06-22 LDX69 LIN → LBG Jun 22, 13:49 UTCJun 22, 14:59 UTC1h 10m
2026-06-22 LDX69 - Jun 22, 06:54 UTCJun 22, 07:34 UTC40m
2026-06-21 LDX69 - Jun 21, 14:05 UTCJun 21, 16:10 UTC2h 5m
2026-06-20 LDX69 - Jun 20, 08:09 UTCJun 20, 10:04 UTC1h 55m
2026-06-18 LDX69C - Jun 18, 16:45 UTCJun 18, 17:35 UTC50m
2026-06-18 LDX69C - Jun 18, 12:55 UTCJun 18, 14:50 UTC1h 55m
2026-06-17 LDX69C - Jun 17, 18:30 UTCJun 17, 20:25 UTC1h 55m
2026-06-17 LDX69C ZRH → ZRH Jun 17, 17:50 UTCJun 17, 18:15 UTC25m
2026-06-17 LDX69C LBG → ZRH Jun 17, 17:00 UTCJun 17, 17:45 UTC45m
2026-06-17 LDX69C LYN → LBG Jun 17, 13:55 UTCJun 17, 14:40 UTC45m
2026-06-15 LDX69 - Jun 15, 15:40 UTCJun 15, 16:19 UTC40m
2026-06-14 LDX69 - Jun 14, 09:25 UTCJun 14, 10:10 UTC45m
2026-06-12 LDX69 - Jun 12, 09:50 UTCJun 12, 11:40 UTC1h 50m
2026-06-12 LDX69 - Jun 12, 06:10 UTCJun 12, 08:15 UTC2h 5m
2026-06-11 LDX69C - Jun 11, 10:15 UTCJun 11, 16:15 UTC6h 0m
2026-06-10 LDX69C - Jun 10, 16:50 UTCJun 10, 18:10 UTC1h 20m
2026-06-10 LDX69C TEB → DAY Jun 10, 12:30 UTCJun 10, 13:45 UTC1h 15m
2026-06-09 LDX69C - Jun 9, 08:45 UTCJun 9, 15:50 UTC7h 5m
2026-06-07 LDX069 MAD → GVA Jun 7, 16:40 UTCJun 7, 18:00 UTC1h 20m
2026-06-05 LDX069 - Jun 5, 16:15 UTCJun 5, 17:45 UTC1h 30m
2026-06-01 LDX69 - Jun 1, 06:50 UTCJun 1, 08:35 UTC1h 45m

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

Mode-S 44003B frequently asked

What is Mode-S code 44003B?
44003B is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-IDZ.
Where is Mode-S 44003B registered?
Mode-S code 44003B is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44003B broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44003B, octal 21000073, decimal 4,456,507.
What flights does 44003B operate?
Mode-S 44003B has broadcast 4 distinct callsigns, including LDX69C, LDX69, LDX069C, LDX069.