Apparatus

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sensors Mode-S transponder

7C3FDF

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-MWH · BEECH 200 Super King Air · operated by ROYAL FLYING DOCTOR SERVICE OF AUSTRALIA (SOUTH EASTERN SECTION)

Hex
7C3FDF
Octal
37037737
Decimal
8,142,815
Country
AU
Tail
VH-MWH
Type
BE20
No current signal · last broadcast 11h ago
Flights observed
229
Distinct callsigns
15
Country
AU
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 7C3FDF.

Country allocation

The ICAO 24-bit address 7C3FDF 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 15 distinct

Callsign Airline Flights Last seen
FD213 - 28 2026-07-16
FD287 - 27 2026-07-13
FD244 - 27 2026-07-15
FD243 - 26 2026-07-15
FD237 - 19 2026-07-17
FD212 - 18 2026-07-11
FD238 - 17 2026-07-17
FD218 - 17 2026-07-07
FD264 - 16 2026-05-28
FD234 Thai AirAsia 12 2026-06-02
FD231 - 9 2026-06-26
FD221 - 5 2026-06-02
FD258 - 3 2026-06-05
FD236 - 3 2026-07-11
FD216 - 2 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 FD237 - Jul 17, 15:10 UTCJul 17, 15:44 UTC35m
2026-07-17 FD237 - Jul 17, 13:50 UTCJul 17, 14:35 UTC45m
2026-07-17 FD237 - Jul 17, 11:45 UTCJul 17, 12:10 UTC25m
2026-07-17 FD237 - Jul 17, 10:44 UTCJul 17, 11:10 UTC25m
2026-07-17 FD238 - Jul 17, 06:10 UTCJul 17, 06:50 UTC40m
2026-07-17 FD238 - Jul 17, 04:29 UTCJul 17, 05:20 UTC50m
2026-07-17 FD238 - Jul 17, 00:50 UTCJul 17, 01:09 UTC20m
2026-07-16 FD238 - Jul 16, 22:40 UTCJul 16, 22:55 UTC15m
2026-07-16 FD213 - Jul 16, 10:40 UTCJul 16, 12:40 UTC2h 0m
2026-07-16 FD237 - Jul 16, 05:05 UTCJul 16, 05:40 UTC35m
2026-07-16 FD237 - Jul 16, 03:25 UTCJul 16, 04:05 UTC40m
2026-07-15 FD244 - Jul 15, 15:10 UTCJul 15, 15:45 UTC35m
2026-07-15 FD244 - Jul 15, 13:45 UTCJul 15, 14:25 UTC40m
2026-07-15 FD244 - Jul 15, 12:45 UTCJul 15, 13:00 UTC15m
2026-07-15 FD244 - Jul 15, 11:20 UTCJul 15, 11:55 UTC35m
2026-07-15 FD243 - Jul 15, 03:20 UTCJul 15, 03:45 UTC25m
2026-07-15 FD243 - Jul 15, 02:20 UTCJul 15, 02:35 UTC15m
2026-07-14 FD243 - Jul 14, 05:00 UTCJul 14, 05:20 UTC20m
2026-07-14 FD243 - Jul 14, 03:55 UTCJul 14, 04:20 UTC25m
2026-07-13 FD287 - Jul 13, 17:40 UTCJul 13, 18:20 UTC40m
2026-07-13 FD287 - Jul 13, 16:15 UTCJul 13, 16:45 UTC30m
2026-07-13 FD287 - Jul 13, 15:05 UTCJul 13, 15:35 UTC30m
2026-07-13 FD287 - Jul 13, 14:10 UTCJul 13, 14:25 UTC15m
2026-07-13 FD287 - Jul 13, 12:25 UTCJul 13, 13:10 UTC45m
2026-07-13 FD243 - Jul 13, 07:45 UTCJul 13, 08:01 UTC15m
2026-07-13 FD243 - Jul 13, 05:31 UTCJul 13, 06:50 UTC1h 20m
2026-07-13 FD243 - Jul 13, 02:10 UTCJul 13, 02:45 UTC35m
2026-07-12 FD287 - Jul 12, 06:01 UTCJul 12, 07:05 UTC1h 5m
2026-07-12 FD287 - Jul 12, 04:30 UTCJul 12, 05:10 UTC40m
2026-07-12 FD287 - Jul 12, 02:55 UTCJul 12, 03:20 UTC25m
2026-07-12 FD287 - Jul 12, 00:45 UTCJul 12, 01:10 UTC25m
2026-07-11 FD287 - Jul 11, 23:40 UTCJul 11, 23:50 UTC10m
2026-07-11 FD236 - Jul 11, 16:55 UTCJul 11, 17:05 UTC10m
2026-07-11 FD236 - Jul 11, 14:00 UTCJul 11, 15:30 UTC1h 30m
2026-07-11 FD236 - Jul 11, 11:35 UTCJul 11, 12:20 UTC45m
2026-07-11 FD212 - Jul 11, 03:50 UTCJul 11, 04:40 UTC50m
2026-07-11 FD212 - Jul 11, 01:25 UTCJul 11, 01:55 UTC30m
2026-07-10 FD238 - Jul 10, 11:20 UTCJul 10, 11:40 UTC20m
2026-07-10 FD238 - Jul 10, 10:30 UTCJul 10, 10:45 UTC15m
2026-07-10 FD244 - Jul 10, 07:05 UTCJul 10, 07:20 UTC15m
2026-07-10 FD244 - Jul 10, 05:00 UTCJul 10, 06:15 UTC1h 15m
2026-07-10 FD244 - Jul 10, 01:30 UTCJul 10, 02:00 UTC30m
2026-07-09 FD237 - Jul 9, 14:30 UTCJul 9, 15:15 UTC45m
2026-07-09 FD237 - Jul 9, 12:20 UTCJul 9, 13:40 UTC1h 20m
2026-07-09 FD237 - Jul 9, 11:10 UTCJul 9, 11:30 UTC20m
2026-07-09 FD238 - Jul 9, 06:45 UTCJul 9, 07:15 UTC30m
2026-07-09 FD238 - Jul 9, 04:45 UTCJul 9, 06:15 UTC1h 30m
2026-07-09 FD238 - Jul 9, 01:10 UTCJul 9, 01:30 UTC20m
2026-07-09 FD238 - Jul 9, 00:00 UTCJul 9, 00:20 UTC20m
2026-07-08 FD213 - Jul 8, 14:15 UTCJul 8, 14:55 UTC40m

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

Mode-S 7C3FDF frequently asked

What is Mode-S code 7C3FDF?
7C3FDF is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-MWH.
Where is Mode-S 7C3FDF registered?
Mode-S code 7C3FDF is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C3FDF broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C3FDF, octal 37037737, decimal 8,142,815.
What flights does 7C3FDF operate?
Mode-S 7C3FDF has broadcast 15 distinct callsigns, including FD213, FD287, FD244, FD243, FD237.