Apparatus

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sensors Mode-S transponder

7C1CA5

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C1CA5
Octal
37016245
Decimal
8,133,797
Country
AU
Tail
VH-FXZ
Type
PC12
No current signal · last broadcast 2d ago
Flights observed
294
Distinct callsigns
20
Country
AU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 7C1CA5.

Country allocation

The ICAO 24-bit address 7C1CA5 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
FD540 - 31 2026-06-29
FD542 - 20 2026-06-08
FD521 - 20 2026-06-19
FD522 - 18 2026-06-21
FD519 - 15 2026-06-27
FD526 - 13 2026-06-09
FD515 - 13 2026-06-18
FD549 - 12 2026-06-17
FD518 - 12 2026-06-27
FD539 - 11 2026-07-11
FD533 Thai AirAsia 11 2026-06-10
FD531 - 11 2026-06-26
FD528 - 10 2026-07-04
FD524 - 10 2026-06-29
FD567 Thai AirAsia 8 2026-06-12
FD529 - 8 2026-05-09
FD535 - 7 2026-06-29
FD517 - 7 2026-06-28
FD512 - 6 2026-07-08
FD580 - 5 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 FD539 - Jul 11, 20:10 UTCJul 11, 20:45 UTC35m
2026-07-11 FD539 - Jul 11, 11:30 UTCJul 11, 12:10 UTC40m
2026-07-10 FD539 - Jul 10, 20:25 UTCJul 10, 21:00 UTC35m
2026-07-10 FD539 - Jul 10, 11:45 UTCJul 10, 12:25 UTC40m
2026-07-08 FD512 - Jul 8, 13:00 UTCJul 8, 13:40 UTC40m
2026-07-08 FD512 - Jul 8, 10:25 UTCJul 8, 11:00 UTC35m
2026-07-04 FD528 - Jul 4, 10:10 UTCJul 4, 10:50 UTC40m
2026-07-04 FD528 - Jul 4, 07:35 UTCJul 4, 08:15 UTC40m
2026-07-01 FD571 WUH → DMK Jul 1, 09:40 UTCJul 1, 10:15 UTC35m
2026-07-01 FD571 WUH → DMK Jul 1, 06:50 UTCJul 1, 07:40 UTC50m
2026-06-29 FD535 - Jun 29, 23:19 UTCJun 29, 23:49 UTC30m
2026-06-29 FD540 - Jun 29, 17:45 UTCJun 29, 18:30 UTC45m
2026-06-29 FD540 - Jun 29, 16:25 UTCJun 29, 16:50 UTC25m
2026-06-29 FD540 - Jun 29, 15:00 UTCJun 29, 15:30 UTC30m
2026-06-29 FD540 - Jun 29, 13:49 UTCJun 29, 14:19 UTC30m
2026-06-29 FD540 - Jun 29, 12:24 UTCJun 29, 12:49 UTC25m
2026-06-29 FD540 - Jun 29, 10:40 UTCJun 29, 10:59 UTC20m
2026-06-29 FD524 - Jun 29, 01:34 UTCJun 29, 02:00 UTC25m
2026-06-29 FD524 - Jun 29, 00:24 UTCJun 29, 00:54 UTC30m
2026-06-28 FD517 - Jun 28, 10:30 UTCJun 28, 11:04 UTC35m
2026-06-28 FD517 - Jun 28, 08:55 UTCJun 28, 09:39 UTC45m
2026-06-28 FD517 ADL → ADL Jun 28, 06:34 UTCJun 28, 07:50 UTC1h 15m
2026-06-28 FD517 - Jun 28, 04:59 UTCJun 28, 05:34 UTC35m
2026-06-28 FD517 - Jun 28, 03:45 UTCJun 28, 04:20 UTC35m
2026-06-27 FD518 - Jun 27, 13:24 UTCJun 27, 14:00 UTC35m
2026-06-27 FD518 - Jun 27, 10:40 UTCJun 27, 11:20 UTC40m
2026-06-27 FD519 - Jun 27, 05:39 UTCJun 27, 06:19 UTC40m
2026-06-27 FD519 ADL → PLO Jun 27, 01:04 UTCJun 27, 01:44 UTC40m
2026-06-26 FD531 - Jun 26, 16:49 UTCJun 26, 17:25 UTC35m
2026-06-26 FD531 ADL → PLO Jun 26, 15:49 UTCJun 26, 16:30 UTC40m
2026-06-26 FD531 - Jun 26, 13:55 UTCJun 26, 14:19 UTC25m
2026-06-26 FD531 - Jun 26, 11:20 UTCJun 26, 11:45 UTC25m
2026-06-26 FD564 - Jun 26, 06:04 UTCJun 26, 06:29 UTC25m
2026-06-26 FD564 - Jun 26, 04:45 UTCJun 26, 05:10 UTC25m
2026-06-26 FD564 - Jun 26, 02:24 UTCJun 26, 03:05 UTC40m
2026-06-25 FD564 - Jun 25, 23:09 UTCJun 25, 23:49 UTC40m
2026-06-25 FD583 KMG → DMK Jun 25, 19:05 UTCJun 25, 19:29 UTC25m
2026-06-25 FD583 KMG → DMK Jun 25, 18:10 UTCJun 25, 18:29 UTC20m
2026-06-25 FD583 KMG → DMK Jun 25, 15:20 UTCJun 25, 15:54 UTC35m
2026-06-25 FD583 KMG → DMK Jun 25, 11:10 UTCJun 25, 11:54 UTC45m
2026-06-22 FD534 - Jun 22, 06:49 UTCJun 22, 07:25 UTC35m
2026-06-22 FD534 - Jun 22, 03:40 UTCJun 22, 04:15 UTC35m
2026-06-22 FD534 - Jun 22, 02:10 UTCJun 22, 02:40 UTC30m
2026-06-21 FD534 - Jun 21, 23:34 UTCJun 22, 00:04 UTC30m
2026-06-21 FD518 DMK → HKG Jun 21, 20:29 UTCJun 21, 20:59 UTC30m
2026-06-21 FD518 DMK → HKG Jun 21, 19:24 UTCJun 21, 19:45 UTC20m
2026-06-21 FD518 DMK → HKG Jun 21, 17:39 UTCJun 21, 18:14 UTC35m
2026-06-21 FD518 DMK → HKG Jun 21, 15:40 UTCJun 21, 15:59 UTC20m
2026-06-21 FD518 DMK → HKG Jun 21, 13:54 UTCJun 21, 14:54 UTC1h 0m
2026-06-21 FD522 - Jun 21, 06:14 UTCJun 21, 06:40 UTC25m

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

Mode-S 7C1CA5 frequently asked

What is Mode-S code 7C1CA5?
7C1CA5 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FXZ.
Where is Mode-S 7C1CA5 registered?
Mode-S code 7C1CA5 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C1CA5 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C1CA5, octal 37016245, decimal 8,133,797.
What flights does 7C1CA5 operate?
Mode-S 7C1CA5 has broadcast 20 distinct callsigns, including FD540, FD542, FD521, FD522, FD519.