Apparatus

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sensors Mode-S transponder

7C705D

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-WHB · CESSNA 172 Skyhawk · operated by PLATINUM AIRCRAFT CHARTER PTY LTD

Hex
7C705D
Octal
37070135
Decimal
8,155,229
Country
AU
Tail
VH-WHB
Type
C172
Broadcasting now · callsign WHB · 3,325 ft
Flights observed
12
Distinct callsigns
1
Country
AU
Last broadcast
16h ago

Current position

7C705D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C705D 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
WHB - 12 2026-04-14

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 WHB - Apr 14, 08:20 UTCApr 14, 08:40 UTC20m
2026-04-14 WHB - Apr 14, 07:10 UTCApr 14, 07:40 UTC30m
2026-04-14 WHB - Apr 14, 06:25 UTCApr 14, 07:10 UTC45m
2026-04-14 WHB - Apr 14, 05:20 UTCApr 14, 05:45 UTC25m
2026-04-13 WHB - Apr 13, 08:20 UTCApr 13, 08:35 UTC15m
2026-04-13 WHB - Apr 13, 07:55 UTCApr 13, 08:05 UTC10m
2026-04-13 WHB - Apr 13, 06:00 UTCApr 13, 07:15 UTC1h 15m
2026-04-13 WHB - Apr 13, 04:20 UTCApr 13, 05:30 UTC1h 10m
2026-04-13 WHB - Apr 13, 04:10 UTCApr 13, 05:30 UTC1h 20m
2026-04-13 WHB - Apr 13, 01:30 UTCApr 13, 03:25 UTC1h 55m
2026-04-13 WHB - Apr 13, 00:20 UTCApr 13, 00:50 UTC30m
2026-04-12 WHB - Apr 12, 23:55 UTCApr 13, 00:50 UTC55m

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

Mode-S 7C705D frequently asked

What is Mode-S code 7C705D?
7C705D is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-WHB.
Where is Mode-S 7C705D registered?
Mode-S code 7C705D is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C705D broadcasting right now?
Yes. Mode-S 7C705D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C705D, octal 37070135, decimal 8,155,229.
What flights does 7C705D operate?
Mode-S 7C705D has broadcast 1 distinct callsign, including WHB.