Apparatus

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sensors Mode-S transponder

7C16CF

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-ESH · AGUSTA AW-139 · operated by STATE OF QUEENSLAND

Hex
7C16CF
Octal
37013317
Decimal
8,132,303
Country
AU
Tail
VH-ESH
Type
A139
No current signal · last broadcast 5h ago
Flights observed
24
Distinct callsigns
2
Country
AU
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 7C16CF.

Country allocation

The ICAO 24-bit address 7C16CF 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 2 distinct

Callsign Airline Flights Last seen
RSCU500 - 21 2026-04-18
ESH - 3 2026-04-16

Recent flights last 24

DateFlightRouteTakeoffLandingDuration
2026-04-18 RSCU500 - Apr 18, 12:55 UTCApr 18, 13:30 UTC35m
2026-04-18 RSCU500 - Apr 18, 10:35 UTCApr 18, 11:15 UTC40m
2026-04-18 RSCU500 - Apr 18, 10:10 UTCApr 18, 10:20 UTC10m
2026-04-18 RSCU500 - Apr 18, 07:25 UTCApr 18, 07:40 UTC15m
2026-04-18 RSCU500 - Apr 18, 06:20 UTCApr 18, 06:40 UTC20m
2026-04-18 RSCU500 - Apr 18, 04:10 UTCApr 18, 04:30 UTC20m
2026-04-18 RSCU500 - Apr 18, 02:25 UTCApr 18, 02:50 UTC25m
2026-04-17 RSCU500 - Apr 17, 23:25 UTCApr 18, 01:10 UTC1h 45m
2026-04-17 RSCU500 - Apr 17, 22:45 UTCApr 17, 23:20 UTC35m
2026-04-17 RSCU500 - Apr 17, 20:35 UTCApr 17, 21:00 UTC25m
2026-04-17 RSCU500 - Apr 17, 18:20 UTCApr 17, 18:50 UTC30m
2026-04-17 RSCU500 - Apr 17, 12:30 UTCApr 17, 12:35 UTC5m
2026-04-17 RSCU500 - Apr 17, 11:20 UTCApr 17, 11:45 UTC25m
2026-04-17 RSCU500 - Apr 17, 08:50 UTCApr 17, 09:15 UTC25m
2026-04-17 RSCU500 - Apr 17, 02:40 UTCApr 17, 02:59 UTC20m
2026-04-17 RSCU500 - Apr 17, 01:20 UTCApr 17, 01:35 UTC15m
2026-04-16 RSCU500 - Apr 16, 12:14 UTCApr 16, 12:45 UTC30m
2026-04-16 RSCU500 - Apr 16, 10:29 UTCApr 16, 11:04 UTC35m
2026-04-16 RSCU500 - Apr 16, 08:40 UTCApr 16, 08:50 UTC10m
2026-04-16 RSCU500 - Apr 16, 07:45 UTCApr 16, 08:15 UTC30m
2026-04-16 RSCU500 - Apr 16, 05:09 UTCApr 16, 05:29 UTC20m
2026-04-16 ESH - Apr 16, 02:09 UTCApr 16, 02:50 UTC40m
2026-04-16 ESH - Apr 16, 01:10 UTCApr 16, 01:30 UTC20m
2026-04-16 ESH - Apr 16, 00:50 UTCApr 16, 01:05 UTC15m

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

Mode-S 7C16CF frequently asked

What is Mode-S code 7C16CF?
7C16CF is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-ESH.
Where is Mode-S 7C16CF registered?
Mode-S code 7C16CF is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C16CF broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C16CF, octal 37013317, decimal 8,132,303.
What flights does 7C16CF operate?
Mode-S 7C16CF has broadcast 2 distinct callsigns, including RSCU500, ESH.