Apparatus

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sensors Mode-S transponder

7C19BC

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-FDA · BEECHCRAFT Super King Air 350 · operated by ROYAL FLYING DOCTOR SERVICE OF AUSTRALIA (QUEENSLAND SECTION) LIMITED

Hex
7C19BC
Octal
37014674
Decimal
8,133,052
Country
AU
Tail
VH-FDA
Type
B350
No current signal · last broadcast Jul 24, 15:30 UTC
Flights observed
204
Distinct callsigns
1
Country
AU
Last broadcast
Jul 24, 15:30 UTC

Last known position

Most recent position reported by Mode-S 7C19BC.

Country allocation

The ICAO 24-bit address 7C19BC 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
FD401 - 204 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 FD401 - Jul 24, 14:35 UTCJul 24, 15:30 UTC55m
2026-07-24 FD401 - Jul 24, 11:50 UTCJul 24, 12:25 UTC35m
2026-07-24 FD401 - Jul 24, 06:30 UTCJul 24, 07:10 UTC40m
2026-07-24 FD401 - Jul 24, 03:10 UTCJul 24, 03:50 UTC40m
2026-07-24 FD401 - Jul 24, 01:15 UTCJul 24, 01:40 UTC25m
2026-07-23 FD401 - Jul 23, 23:05 UTCJul 23, 23:40 UTC35m
2026-07-23 FD401 - Jul 23, 13:50 UTCJul 23, 14:35 UTC45m
2026-07-23 FD401 - Jul 23, 11:05 UTCJul 23, 11:45 UTC40m
2026-07-23 FD401 - Jul 23, 03:40 UTCJul 23, 04:30 UTC50m
2026-07-22 FD401 - Jul 22, 23:05 UTCJul 22, 23:50 UTC45m
2026-07-18 FD401 - Jul 18, 06:40 UTCJul 18, 07:00 UTC20m
2026-07-18 FD401 - Jul 18, 02:50 UTCJul 18, 03:00 UTC10m
2026-07-18 FD401 - Jul 18, 01:45 UTCJul 18, 01:54 UTC10m
2026-07-18 FD401 - Jul 18, 00:39 UTCJul 18, 01:05 UTC25m
2026-07-17 FD401 - Jul 17, 07:14 UTCJul 17, 07:44 UTC30m
2026-07-17 FD401 - Jul 17, 03:50 UTCJul 17, 04:29 UTC40m
2026-07-16 FD401 - Jul 16, 06:50 UTCJul 16, 07:30 UTC40m
2026-07-16 FD401 - Jul 16, 02:45 UTCJul 16, 03:20 UTC35m
2026-07-15 FD401 - Jul 15, 05:45 UTCJul 15, 06:20 UTC35m
2026-07-15 FD401 - Jul 15, 04:05 UTCJul 15, 04:45 UTC40m
2026-07-14 FD401 - Jul 14, 02:50 UTCJul 14, 03:25 UTC35m
2026-07-13 FD401 - Jul 13, 15:50 UTCJul 13, 16:20 UTC30m
2026-07-13 FD401 - Jul 13, 05:55 UTCJul 13, 06:50 UTC55m
2026-07-13 FD401 - Jul 13, 03:30 UTCJul 13, 04:05 UTC35m
2026-07-12 FD401 - Jul 12, 07:01 UTCJul 12, 08:05 UTC1h 5m
2026-07-12 FD401 - Jul 12, 03:35 UTCJul 12, 03:55 UTC20m
2026-07-12 FD401 - Jul 12, 02:35 UTCJul 12, 02:50 UTC15m
2026-07-11 FD401 - Jul 11, 14:40 UTCJul 11, 15:25 UTC45m
2026-07-11 FD401 - Jul 11, 11:30 UTCJul 11, 12:05 UTC35m
2026-07-11 FD401 - Jul 11, 05:15 UTCJul 11, 06:10 UTC55m
2026-07-11 FD401 - Jul 11, 01:30 UTCJul 11, 01:55 UTC25m
2026-07-10 FD401 - Jul 10, 06:00 UTCJul 10, 06:10 UTC10m
2026-07-10 FD401 - Jul 10, 04:45 UTCJul 10, 05:15 UTC30m
2026-07-10 FD401 - Jul 10, 02:10 UTCJul 10, 02:40 UTC30m
2026-07-08 FD401 - Jul 8, 03:45 UTCJul 8, 04:30 UTC45m
2026-07-08 FD401 - Jul 8, 00:30 UTCJul 8, 01:10 UTC40m
2026-07-07 FD401 - Jul 7, 17:35 UTCJul 7, 18:10 UTC35m
2026-07-07 FD401 - Jul 7, 16:05 UTCJul 7, 16:15 UTC10m
2026-07-07 FD401 - Jul 7, 13:40 UTCJul 7, 14:10 UTC30m
2026-07-07 FD401 - Jul 7, 11:40 UTCJul 7, 12:20 UTC40m
2026-07-07 FD401 - Jul 7, 07:40 UTCJul 7, 08:15 UTC35m
2026-07-07 FD401 - Jul 7, 06:00 UTCJul 7, 06:45 UTC45m
2026-07-06 FD401 - Jul 6, 13:05 UTCJul 6, 13:45 UTC40m
2026-07-06 FD401 - Jul 6, 10:50 UTCJul 6, 11:25 UTC35m
2026-07-06 FD401 - Jul 6, 05:40 UTCJul 6, 06:25 UTC45m
2026-07-06 FD401 - Jul 6, 03:55 UTCJul 6, 04:30 UTC35m
2026-07-05 FD401 - Jul 5, 13:20 UTCJul 5, 14:00 UTC40m
2026-07-05 FD401 - Jul 5, 10:50 UTCJul 5, 11:20 UTC30m
2026-07-05 FD401 - Jul 5, 00:40 UTCJul 5, 01:25 UTC45m
2026-07-04 FD401 - Jul 4, 22:30 UTCJul 4, 23:05 UTC35m

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

Mode-S 7C19BC frequently asked

What is Mode-S code 7C19BC?
7C19BC is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FDA.
Where is Mode-S 7C19BC registered?
Mode-S code 7C19BC is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C19BC broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 15:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C19BC, octal 37014674, decimal 8,133,052.
What flights does 7C19BC operate?
Mode-S 7C19BC has broadcast 1 distinct callsign, including FD401.