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sensors Mode-S transponder

7C19CF

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-FDT · BEECH 200 Super King Air · operated by ROYAL FLYING DOCTOR SERVICE OF AUSTRALIA (QUEENSLAND SECTION) LIMITED

Hex
7C19CF
Octal
37014717
Decimal
8,133,071
Country
AU
Tail
VH-FDT
Type
BE20
No current signal · last broadcast 29d ago
Flights observed
44
Distinct callsigns
1
Country
AU
Last broadcast
29d ago

Last known position

Most recent position reported by Mode-S 7C19CF.

Country allocation

The ICAO 24-bit address 7C19CF 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 1 distinct

Callsign Airline Flights Last seen
FD436 Thai AirAsia 44 2026-07-26

Recent flights last 44

DateFlightRouteTakeoffLandingDuration
2026-07-26 FD436 ISA → TSV Jul 26, 11:50 UTCJul 26, 12:00 UTC10m
2026-07-26 FD436 ISA → TSV Jul 26, 10:30 UTCJul 26, 10:50 UTC20m
2026-07-26 FD436 ISA → TSV Jul 26, 01:45 UTCJul 26, 02:15 UTC30m
2026-07-25 FD436 ISA → TSV Jul 25, 23:05 UTCJul 25, 23:40 UTC35m
2026-07-25 FD436 ISA → TSV Jul 25, 14:20 UTCJul 25, 14:30 UTC10m
2026-07-25 FD436 ISA → TSV Jul 25, 12:15 UTCJul 25, 12:30 UTC15m
2026-07-20 FD436 ISA → TSV Jul 20, 05:30 UTCJul 20, 05:50 UTC20m
2026-07-20 FD436 ISA → TSV Jul 20, 04:35 UTCJul 20, 04:55 UTC20m
2026-07-20 FD436 ISA → TSV Jul 20, 02:55 UTCJul 20, 03:10 UTC15m
2026-07-20 FD436 ISA → TSV Jul 20, 01:10 UTCJul 20, 01:30 UTC20m
2026-07-18 FD436 ISA → TSV Jul 18, 10:25 UTCJul 18, 12:00 UTC1h 35m
2026-07-18 FD436 ISA → TSV Jul 18, 02:50 UTCJul 18, 03:15 UTC25m
2026-07-18 FD436 ISA → TSV Jul 18, 01:25 UTCJul 18, 01:34 UTC10m
2026-07-18 FD436 ISA → TSV Jul 18, 00:10 UTCJul 18, 00:25 UTC15m
2026-07-17 FD436 ISA → TSV Jul 17, 23:25 UTCJul 18, 00:04 UTC40m
2026-07-17 FD436 ISA → TSV Jul 17, 13:10 UTCJul 17, 13:29 UTC20m
2026-07-17 FD436 ISA → TSV Jul 17, 12:00 UTCJul 17, 12:19 UTC20m
2026-07-16 FD436 - Jul 16, 02:35 UTCJul 16, 02:55 UTC20m
2026-07-16 FD436 - Jul 16, 01:10 UTCJul 16, 01:30 UTC20m
2026-07-15 FD436 - Jul 15, 23:25 UTCJul 16, 00:20 UTC55m
2026-07-15 FD436 - Jul 15, 16:20 UTCJul 15, 16:35 UTC15m
2026-07-15 FD436 - Jul 15, 15:20 UTCJul 15, 15:35 UTC15m
2026-07-15 FD436 - Jul 15, 02:05 UTCJul 15, 02:40 UTC35m
2026-07-15 FD436 - Jul 15, 00:15 UTCJul 15, 00:50 UTC35m
2026-07-14 FD436 - Jul 14, 12:15 UTCJul 14, 12:35 UTC20m
2026-07-14 FD436 - Jul 14, 11:10 UTCJul 14, 11:20 UTC10m
2026-07-14 FD436 - Jul 14, 03:25 UTCJul 14, 04:00 UTC35m
2026-07-14 FD436 - Jul 14, 01:25 UTCJul 14, 02:00 UTC35m
2026-07-13 FD436 - Jul 13, 17:00 UTCJul 13, 17:15 UTC15m
2026-07-13 FD436 - Jul 13, 03:15 UTCJul 13, 03:30 UTC15m
2026-07-13 FD436 - Jul 13, 02:35 UTCJul 13, 03:10 UTC35m
2026-07-13 FD436 - Jul 13, 01:25 UTCJul 13, 01:40 UTC15m
2026-07-12 FD436 - Jul 12, 02:15 UTCJul 12, 02:45 UTC30m
2026-07-12 FD436 - Jul 12, 00:15 UTCJul 12, 00:25 UTC10m
2026-07-11 FD436 - Jul 11, 15:55 UTCJul 11, 16:20 UTC25m
2026-07-11 FD436 - Jul 11, 15:00 UTCJul 11, 15:20 UTC20m
2026-07-11 FD436 - Jul 11, 12:30 UTCJul 11, 12:45 UTC15m
2026-07-11 FD436 - Jul 11, 11:35 UTCJul 11, 11:45 UTC10m
2026-07-11 FD436 - Jul 11, 05:05 UTCJul 11, 05:20 UTC15m
2026-07-11 FD436 - Jul 11, 03:35 UTCJul 11, 03:55 UTC20m
2026-07-11 FD436 - Jul 11, 02:05 UTCJul 11, 02:30 UTC25m
2026-07-11 FD436 - Jul 11, 00:40 UTCJul 11, 00:55 UTC15m
2026-07-10 FD436 - Jul 10, 13:00 UTCJul 10, 13:15 UTC15m
2026-07-10 FD436 - Jul 10, 12:05 UTCJul 10, 12:15 UTC10m

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

Mode-S 7C19CF frequently asked

What is Mode-S code 7C19CF?
7C19CF is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FDT.
Where is Mode-S 7C19CF registered?
Mode-S code 7C19CF is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C19CF broadcasting right now?
No active broadcast right now. Last signal was 29d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C19CF, octal 37014717, decimal 8,133,071.
What flights does 7C19CF operate?
Mode-S 7C19CF has broadcast 1 distinct callsign, including FD436.