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
Broadcasting now · callsign FD522 · 14,000 ft
Flights observed
65
Distinct callsigns
18
Country
AU
Last broadcast
3h ago

Current position

7C1CA5 is currently broadcasting. Map zoomed to live position.

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 18 distinct

Callsign Airline Flights Last seen
FD529 - 8 2026-05-09
FD526 - 8 2026-04-20
FD521 - 7 2026-04-22
FD535 - 6 2026-05-20
FD567 Thai AirAsia 4 2026-05-17
FD542 - 4 2026-05-20
FD519 Thai AirAsia 4 2026-05-19
FD516 Thai AirAsia 4 2026-04-22
FD512 Thai AirAsia 4 2026-05-06
FD571 Thai AirAsia 3 2026-05-02
FD533 Thai AirAsia 3 2026-04-17
FD582 Thai AirAsia 2 2026-04-29
FD538 - 2 2026-04-22
FD517 - 2 2026-05-12
FD540 - 1 2026-04-23
FD522 - 1 2026-05-30
FD518 Thai AirAsia 1 2026-04-22
FD515 Thai AirAsia 1 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 FD522 - May 30, 02:30 UTCMay 30, 02:50 UTC20m
2026-05-20 FD535 - May 20, 15:40 UTCMay 20, 16:15 UTC35m
2026-05-20 FD535 - May 20, 07:05 UTCMay 20, 07:45 UTC40m
2026-05-20 FD542 - May 20, 03:50 UTCMay 20, 04:15 UTC25m
2026-05-20 FD542 - May 20, 01:25 UTCMay 20, 01:45 UTC20m
2026-05-19 FD542 - May 19, 23:10 UTCMay 19, 23:55 UTC45m
2026-05-19 FD542 ADL → PLO May 19, 21:55 UTCMay 19, 22:40 UTC45m
2026-05-19 FD519 OKA → HKG May 19, 18:00 UTCMay 19, 18:30 UTC30m
2026-05-19 FD519 OKA → HKG May 19, 15:20 UTCMay 19, 15:45 UTC25m
2026-05-19 FD519 OKA → HKG May 19, 12:55 UTCMay 19, 13:45 UTC50m
2026-05-19 FD519 OKA → HKG May 19, 10:50 UTCMay 19, 11:40 UTC50m
2026-05-19 FD535 - May 19, 05:05 UTCMay 19, 05:35 UTC30m
2026-05-19 FD535 - May 19, 04:00 UTCMay 19, 04:20 UTC20m
2026-05-19 FD535 - May 19, 02:20 UTCMay 19, 02:35 UTC15m
2026-05-19 FD535 - May 19, 00:40 UTCMay 19, 01:10 UTC30m
2026-05-17 FD567 HGH → DMK May 17, 05:35 UTCMay 17, 05:55 UTC20m
2026-05-17 FD567 HGH → DMK May 17, 04:20 UTCMay 17, 04:40 UTC20m
2026-05-17 FD567 HGH → DMK May 17, 02:10 UTCMay 17, 02:45 UTC35m
2026-05-17 FD567 HGH → DMK May 17, 01:00 UTCMay 17, 01:40 UTC40m
2026-05-15 FD515 CNX → HKG May 15, 04:15 UTCMay 15, 04:45 UTC30m
2026-05-12 FD517 - May 12, 19:10 UTCMay 12, 19:50 UTC40m
2026-05-12 FD517 - May 12, 16:35 UTCMay 12, 17:10 UTC35m
2026-05-09 FD529 - May 9, 14:40 UTCMay 9, 15:15 UTC35m
2026-05-09 FD529 - May 9, 12:25 UTCMay 9, 13:00 UTC35m
2026-05-06 FD512 DMK → JHB May 6, 11:30 UTCMay 6, 12:05 UTC35m
2026-05-06 FD512 DMK → JHB May 6, 08:45 UTCMay 6, 09:30 UTC45m
2026-05-05 FD529 - May 5, 13:35 UTCMay 5, 14:20 UTC45m
2026-05-05 FD529 - May 5, 12:15 UTCMay 5, 12:50 UTC35m
2026-05-02 FD571 WUH → DMK May 2, 07:40 UTCMay 2, 08:25 UTC45m
2026-05-02 FD571 WUH → DMK May 2, 05:55 UTCMay 2, 06:05 UTC10m
2026-05-02 FD571 WUH → DMK May 2, 05:20 UTCMay 2, 05:50 UTC30m
2026-05-01 FD529 - May 1, 20:50 UTCMay 1, 21:30 UTC40m
2026-05-01 FD529 - May 1, 11:25 UTCMay 1, 12:05 UTC40m
2026-04-29 FD582 DMK → KMG Apr 29, 14:15 UTCApr 29, 14:55 UTC40m
2026-04-29 FD582 DMK → KMG Apr 29, 12:00 UTCApr 29, 12:30 UTC30m
2026-04-28 FD512 DMK → JHB Apr 28, 14:35 UTCApr 28, 15:10 UTC35m
2026-04-28 FD512 DMK → JHB Apr 28, 11:10 UTCApr 28, 11:45 UTC35m
2026-04-24 FD529 - Apr 24, 16:45 UTCApr 24, 17:25 UTC40m
2026-04-24 FD529 - Apr 24, 14:05 UTCApr 24, 14:40 UTC35m
2026-04-23 FD540 - Apr 23, 23:10 UTCApr 23, 23:25 UTC15m
2026-04-22 FD518 DMK → HKG Apr 22, 23:25 UTCApr 23, 00:00 UTC35m
2026-04-22 FD516 HKG → CNX Apr 22, 20:00 UTCApr 22, 20:40 UTC40m
2026-04-22 FD516 HKG → CNX Apr 22, 18:55 UTCApr 22, 19:25 UTC30m
2026-04-22 FD516 HKG → CNX Apr 22, 17:10 UTCApr 22, 17:45 UTC35m
2026-04-22 FD516 HKG → CNX Apr 22, 14:50 UTCApr 22, 15:30 UTC40m
2026-04-22 FD521 - Apr 22, 08:30 UTCApr 22, 09:00 UTC30m
2026-04-22 FD521 - Apr 22, 07:00 UTCApr 22, 07:30 UTC30m
2026-04-22 FD521 - Apr 22, 05:45 UTCApr 22, 06:01 UTC15m
2026-04-22 FD521 - Apr 22, 04:35 UTCApr 22, 04:55 UTC20m
2026-04-22 FD538 MEB → ADL Apr 22, 00:50 UTCApr 22, 02:30 UTC1h 40m

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?
Yes. Mode-S 7C1CA5 is currently airborne.
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 18 distinct callsigns, including FD529, FD526, FD521, FD535, FD567.