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sensors Mode-S transponder

7C1C45

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-FVB · PILATUS PC-12 · operated by ROYAL FLYING DOCTOR SERVICE OF AUSTRALIA CENTRAL OPERATIONS

Hex
7C1C45
Octal
37016105
Decimal
8,133,701
Country
AU
Tail
VH-FVB
Type
PC12
No current signal · last broadcast 5h ago
Flights observed
466
Distinct callsigns
20
Country
AU
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 7C1C45.

Country allocation

The ICAO 24-bit address 7C1C45 falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia 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
FD533 - 27 2026-07-18
FD526 - 27 2026-07-16
FD532 - 26 2026-07-01
FD540 - 25 2026-06-30
FD522 - 25 2026-07-16
FD513 - 24 2026-07-13
FD527 - 22 2026-06-29
FD524 - 21 2026-06-30
FD575 - 19 2026-06-25
FD549 - 19 2026-07-01
FD580 - 18 2026-06-24
FD517 - 17 2026-06-29
FD516 Thai AirAsia 17 2026-05-31
FD531 - 16 2026-07-02
FD528 - 15 2026-06-19
FD567 Thai AirAsia 13 2026-06-11
FD519 Thai AirAsia 13 2026-06-01
FD518 Thai AirAsia 12 2026-05-27
FD534 - 11 2026-06-30
FD521 - 11 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 FD533 - Jul 18, 08:55 UTCJul 18, 09:50 UTC55m
2026-07-18 FD533 - Jul 18, 07:05 UTCJul 18, 08:00 UTC55m
2026-07-18 FD548 - Jul 18, 05:25 UTCJul 18, 06:00 UTC35m
2026-07-18 FD548 - Jul 18, 01:20 UTCJul 18, 02:09 UTC50m
2026-07-17 FD544 - Jul 17, 06:05 UTCJul 17, 06:40 UTC35m
2026-07-17 FD544 - Jul 17, 02:20 UTCJul 17, 02:59 UTC40m
2026-07-16 FD544 - Jul 16, 23:44 UTCJul 17, 00:10 UTC25m
2026-07-16 FD544 - Jul 16, 21:45 UTCJul 16, 22:15 UTC30m
2026-07-16 FD522 - Jul 16, 19:45 UTCJul 16, 20:09 UTC25m
2026-07-16 FD522 - Jul 16, 18:34 UTCJul 16, 19:05 UTC30m
2026-07-16 FD522 - Jul 16, 15:55 UTCJul 16, 16:25 UTC30m
2026-07-16 FD522 - Jul 16, 14:10 UTCJul 16, 14:40 UTC30m
2026-07-16 FD525 - Jul 16, 12:00 UTCJul 16, 12:25 UTC25m
2026-07-16 FD525 - Jul 16, 10:40 UTCJul 16, 10:55 UTC15m
2026-07-16 FD525 - Jul 16, 05:50 UTCJul 16, 06:35 UTC45m
2026-07-16 FD526 PLO → ADL Jul 16, 04:15 UTCJul 16, 04:55 UTC40m
2026-07-16 FD526 ADL → PLO Jul 16, 02:35 UTCJul 16, 03:15 UTC40m
2026-07-15 FD526 - Jul 15, 23:55 UTCJul 16, 00:25 UTC30m
2026-07-15 FD526 ADL → PPI Jul 15, 22:00 UTCJul 15, 22:30 UTC30m
2026-07-15 FD574 - Jul 15, 15:25 UTCJul 15, 15:45 UTC20m
2026-07-15 FD574 - Jul 15, 13:40 UTCJul 15, 14:00 UTC20m
2026-07-15 FD573 - Jul 15, 10:50 UTCJul 15, 12:00 UTC1h 10m
2026-07-15 FD573 ADL → PLO Jul 15, 09:45 UTCJul 15, 10:25 UTC40m
2026-07-15 FD573 - Jul 15, 07:45 UTCJul 15, 08:15 UTC30m
2026-07-15 FD573 - Jul 15, 05:50 UTCJul 15, 06:20 UTC30m
2026-07-15 FD533 - Jul 15, 03:40 UTCJul 15, 04:05 UTC25m
2026-07-15 FD533 - Jul 15, 01:25 UTCJul 15, 01:50 UTC25m
2026-07-14 FD574 - Jul 14, 05:45 UTCJul 14, 06:30 UTC45m
2026-07-14 FD574 - Jul 14, 04:50 UTCJul 14, 05:00 UTC10m
2026-07-14 FD574 - Jul 14, 01:55 UTCJul 14, 02:30 UTC35m
2026-07-14 FD574 - Jul 14, 00:10 UTCJul 14, 00:40 UTC30m
2026-07-13 FD513 - Jul 13, 20:20 UTCJul 13, 20:55 UTC35m
2026-07-13 FD513 - Jul 13, 18:25 UTCJul 13, 18:55 UTC30m
2026-07-13 FD513 - Jul 13, 16:35 UTCJul 13, 17:15 UTC40m
2026-07-13 FD513 - Jul 13, 14:00 UTCJul 13, 14:45 UTC45m
2026-07-10 FD538 ADL → ADL Jul 10, 05:40 UTCJul 10, 07:00 UTC1h 20m
2026-07-03 FD533 - Jul 3, 08:05 UTCJul 3, 08:50 UTC45m
2026-07-03 FD533 - Jul 3, 06:25 UTCJul 3, 07:10 UTC45m
2026-07-03 FD544 - Jul 3, 03:35 UTCJul 3, 04:30 UTC55m
2026-07-03 FD544 - Jul 3, 01:40 UTCJul 3, 02:40 UTC1h 0m
2026-07-02 FD544 ADL → MEB Jul 2, 22:20 UTCJul 2, 23:50 UTC1h 30m
2026-07-02 FD583 - Jul 2, 18:10 UTCJul 2, 18:40 UTC30m
2026-07-02 FD583 - Jul 2, 16:25 UTCJul 2, 16:45 UTC20m
2026-07-02 FD583 - Jul 2, 13:35 UTCJul 2, 14:05 UTC30m
2026-07-02 FD583 - Jul 2, 11:10 UTCJul 2, 11:35 UTC25m
2026-07-02 FD531 - Jul 2, 03:15 UTCJul 2, 04:25 UTC1h 10m
2026-07-02 FD531 - Jul 2, 02:10 UTCJul 2, 02:25 UTC15m
2026-07-02 FD531 - Jul 2, 01:05 UTCJul 2, 01:35 UTC30m
2026-07-01 FD531 PLO → ADL Jul 1, 22:30 UTCJul 1, 23:15 UTC45m
2026-07-01 FD531 ADL → PLO Jul 1, 21:15 UTCJul 1, 22:10 UTC55m

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 VH-FVB page for operator, model, and routing details .

Mode-S 7C1C45 frequently asked

What is Mode-S code 7C1C45?
7C1C45 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FVB.
Where is Mode-S 7C1C45 registered?
Mode-S code 7C1C45 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C1C45 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C1C45, octal 37016105, decimal 8,133,701.
What flights does 7C1C45 operate?
Mode-S 7C1C45 has broadcast 20 distinct callsigns, including FD533, FD526, FD532, FD540, FD522.