Apparatus

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sensors Mode-S transponder

440D42

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-GLB · PILATUS PC-24

Hex
440D42
Octal
21006502
Decimal
4,459,842
Country
AT
Tail
OE-GLB
Type
PC24
No current signal · last broadcast Jul 26, 15:00 UTC
Flights observed
207
Distinct callsigns
20
Country
AT
Last broadcast
Jul 26, 15:00 UTC

Last known position

Most recent position reported by Mode-S 440D42.

Country allocation

The ICAO 24-bit address 440D42 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 20 distinct

Callsign Airline Flights Last seen
PTN89S - 6 2026-06-19
PTN52H - 6 2026-06-12
PTN98S - 4 2026-07-11
PTN97N - 4 2026-06-19
PTN66M - 4 2026-05-06
PTN73V - 3 2026-07-10
PTN69A - 3 2026-07-23
PTN54B - 3 2026-07-25
PTN53S - 3 2026-04-14
PTN51Z - 3 2026-07-21
PTN44A - 3 2026-05-09
PTN42M - 3 2026-04-23
PTN34T - 3 2026-06-16
PTN25W - 3 2026-06-24
PTN24A - 3 2026-07-06
PTN23K - 3 2026-04-13
PTN17K - 3 2026-04-13
PTN97Y - 2 2026-07-03
PTN97W - 2 2026-07-09
PTN97P - 2 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PTN75S - Jul 26, 14:30 UTCJul 26, 15:00 UTC30m
2026-07-26 PTN75S - Jul 26, 12:20 UTCJul 26, 13:00 UTC40m
2026-07-26 PTN99S - Jul 26, 10:35 UTCJul 26, 11:20 UTC45m
2026-07-25 PTN54B - Jul 25, 19:15 UTCJul 25, 19:45 UTC30m
2026-07-25 PTN54B - Jul 25, 10:15 UTCJul 25, 10:45 UTC30m
2026-07-25 PTN54B - Jul 25, 08:00 UTCJul 25, 08:55 UTC55m
2026-07-24 PTN35Y GVA → BDS Jul 24, 16:25 UTCJul 24, 18:00 UTC1h 35m
2026-07-24 PTN41C - Jul 24, 13:15 UTCJul 24, 14:30 UTC1h 15m
2026-07-24 PTN29Y - Jul 24, 08:30 UTCJul 24, 09:10 UTC40m
2026-07-23 PTN19B ZRH → FRA Jul 23, 17:35 UTCJul 23, 18:20 UTC45m
2026-07-23 PTN69A - Jul 23, 15:10 UTCJul 23, 16:45 UTC1h 35m
2026-07-23 PTN69A - Jul 23, 06:15 UTCJul 23, 08:25 UTC2h 10m
2026-07-22 PTN69A - Jul 22, 15:25 UTCJul 22, 16:05 UTC40m
2026-07-22 PTN99K FAO → LBA Jul 22, 11:25 UTCJul 22, 14:15 UTC2h 50m
2026-07-21 PTN42V IBZ → CAT Jul 21, 13:15 UTCJul 21, 15:00 UTC1h 45m
2026-07-21 PTN51Z LPL → IBZ Jul 21, 09:10 UTCJul 21, 11:35 UTC2h 25m
2026-07-20 PTN51Z EMA → LPL Jul 20, 15:55 UTCJul 20, 16:15 UTC20m
2026-07-20 PTN45T ZRH → EMA Jul 20, 12:45 UTCJul 20, 14:20 UTC1h 35m
2026-07-20 PTN45T NCE → ZRH Jul 20, 09:55 UTCJul 20, 10:55 UTC1h 0m
2026-07-20 PTN56D - Jul 20, 07:25 UTCJul 20, 08:25 UTC1h 0m
2026-07-19 PTN451E - Jul 19, 16:50 UTCJul 19, 17:50 UTC1h 0m
2026-07-19 PTN451E - Jul 19, 15:10 UTCJul 19, 16:05 UTC55m
2026-07-19 PTN56V - Jul 19, 05:50 UTCJul 19, 06:50 UTC1h 0m
2026-07-18 PTN32D - Jul 18, 10:40 UTCJul 18, 12:50 UTC2h 10m
2026-07-18 PTN32D - Jul 18, 08:35 UTCJul 18, 09:00 UTC25m
2026-07-12 PTN81L - Jul 12, 14:01 UTCJul 12, 14:45 UTC45m
2026-07-11 PTN98S - Jul 11, 18:15 UTCJul 11, 20:25 UTC2h 10m
2026-07-11 PTN98S - Jul 11, 15:50 UTCJul 11, 17:10 UTC1h 20m
2026-07-10 PTN73V - Jul 10, 18:15 UTCJul 10, 19:00 UTC45m
2026-07-10 PTN73V - Jul 10, 15:45 UTCJul 10, 17:10 UTC1h 25m
2026-07-10 PTN73V - Jul 10, 12:15 UTCJul 10, 14:25 UTC2h 10m
2026-07-09 PTN92M MLA → MAD Jul 9, 16:00 UTCJul 9, 18:25 UTC2h 25m
2026-07-09 PTN83U OLB → MLA Jul 9, 13:15 UTCJul 9, 14:20 UTC1h 5m
2026-07-09 PTN97W - Jul 9, 11:10 UTCJul 9, 11:55 UTC45m
2026-07-09 PTN97W - Jul 9, 09:35 UTCJul 9, 10:00 UTC25m
2026-07-08 PTN81N - Jul 8, 13:35 UTCJul 8, 14:50 UTC1h 15m
2026-07-08 PTN81N - Jul 8, 12:05 UTCJul 8, 12:40 UTC35m
2026-07-08 PTN83V - Jul 8, 09:35 UTCJul 8, 10:50 UTC1h 15m
2026-07-08 PTN83V ZRH → CEQ Jul 8, 07:05 UTCJul 8, 08:05 UTC1h 0m
2026-07-07 PTN48G - Jul 7, 13:55 UTCJul 7, 15:35 UTC1h 40m
2026-07-07 PTN89A - Jul 7, 06:15 UTCJul 7, 06:55 UTC40m
2026-07-06 PTN89A - Jul 6, 13:50 UTCJul 6, 14:15 UTC25m
2026-07-06 PTN24A - Jul 6, 09:50 UTCJul 6, 10:40 UTC50m
2026-07-06 PTN24A - Jul 6, 08:00 UTCJul 6, 08:45 UTC45m
2026-07-06 PTN35V - Jul 6, 06:05 UTCJul 6, 06:55 UTC50m
2026-07-05 PTN82B - Jul 5, 11:00 UTCJul 5, 11:30 UTC30m
2026-07-04 PTN82B - Jul 4, 17:30 UTCJul 4, 17:50 UTC20m
2026-07-04 PTN59R - Jul 4, 15:15 UTCJul 4, 16:45 UTC1h 30m
2026-07-04 PTN59R LPL → FAB Jul 4, 12:35 UTCJul 4, 13:10 UTC35m
2026-07-04 PTN29V - Jul 4, 07:15 UTCJul 4, 10:00 UTC2h 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-GLB page for operator, model, and routing details .

Mode-S 440D42 frequently asked

What is Mode-S code 440D42?
440D42 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-GLB.
Where is Mode-S 440D42 registered?
Mode-S code 440D42 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440D42 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440D42, octal 21006502, decimal 4,459,842.
What flights does 440D42 operate?
Mode-S 440D42 has broadcast 20 distinct callsigns, including PTN89S, PTN52H, PTN98S, PTN97N, PTN66M.