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sensors Mode-S transponder

7C673D

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-UOF · CESSNA 208 Caravan

Hex
7C673D
Octal
37063475
Decimal
8,152,893
Country
AU
Tail
VH-UOF
Type
C208
No current signal · last broadcast 22h ago
Flights observed
107
Distinct callsigns
1
Country
AU
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S 7C673D.

Country allocation

The ICAO 24-bit address 7C673D 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
UOF - 107 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UOF - Jul 14, 06:30 UTCJul 14, 06:40 UTC10m
2026-07-14 UOF - Jul 14, 02:15 UTCJul 14, 02:30 UTC15m
2026-07-13 UOF - Jul 13, 23:10 UTCJul 13, 23:20 UTC10m
2026-07-13 UOF - Jul 13, 02:25 UTCJul 13, 02:35 UTC10m
2026-07-12 UOF - Jul 12, 23:00 UTCJul 12, 23:15 UTC15m
2026-07-09 UOF - Jul 9, 02:25 UTCJul 9, 02:40 UTC15m
2026-07-06 UOF - Jul 6, 05:30 UTCJul 6, 05:40 UTC10m
2026-07-06 UOF - Jul 6, 01:55 UTCJul 6, 02:10 UTC15m
2026-07-03 UOF - Jul 3, 01:55 UTCJul 3, 02:10 UTC15m
2026-07-01 UOF - Jul 1, 02:15 UTCJul 1, 02:25 UTC10m
2026-06-30 UOF - Jun 30, 22:45 UTCJun 30, 22:55 UTC10m
2026-06-30 UOF - Jun 30, 06:35 UTCJun 30, 06:45 UTC10m
2026-06-30 UOF - Jun 30, 01:55 UTCJun 30, 02:10 UTC15m
2026-06-29 UOF - Jun 29, 22:55 UTCJun 29, 23:05 UTC10m
2026-06-28 UOF - Jun 28, 22:45 UTCJun 28, 22:59 UTC15m
2026-06-25 UOF - Jun 25, 07:54 UTCJun 25, 08:04 UTC10m
2026-06-25 UOF - Jun 25, 06:05 UTCJun 25, 06:20 UTC15m
2026-06-25 UOF - Jun 25, 03:50 UTCJun 25, 03:59 UTC10m
2026-06-25 UOF - Jun 25, 01:04 UTCJun 25, 01:14 UTC10m
2026-06-24 UOF - Jun 24, 22:29 UTCJun 24, 22:39 UTC10m
2026-06-24 UOF - Jun 24, 01:39 UTCJun 24, 01:55 UTC15m
2026-06-23 UOF - Jun 23, 03:09 UTCJun 23, 03:20 UTC10m
2026-06-23 UOF - Jun 23, 00:19 UTCJun 23, 00:30 UTC10m
2026-06-22 UOF - Jun 22, 06:39 UTCJun 22, 06:49 UTC10m
2026-06-22 UOF - Jun 22, 01:00 UTCJun 22, 01:15 UTC15m
2026-06-21 UOF - Jun 21, 22:49 UTCJun 21, 23:00 UTC10m
2026-06-19 UOF - Jun 19, 06:10 UTCJun 19, 06:24 UTC15m
2026-06-19 UOF - Jun 19, 05:14 UTCJun 19, 05:24 UTC10m
2026-06-19 UOF - Jun 19, 02:04 UTCJun 19, 02:14 UTC10m
2026-06-18 UOF - Jun 18, 02:35 UTCJun 18, 02:45 UTC10m
2026-06-17 UOF - Jun 17, 06:55 UTCJun 17, 07:05 UTC10m
2026-06-17 UOF - Jun 17, 06:10 UTCJun 17, 06:20 UTC10m
2026-06-17 UOF - Jun 17, 01:55 UTCJun 17, 02:10 UTC15m
2026-06-16 UOF - Jun 16, 06:10 UTCJun 16, 06:25 UTC15m
2026-06-16 UOF - Jun 16, 04:15 UTCJun 16, 04:25 UTC10m
2026-06-16 UOF - Jun 16, 01:10 UTCJun 16, 01:25 UTC15m
2026-06-15 UOF - Jun 15, 22:40 UTCJun 15, 22:49 UTC10m
2026-06-15 UOF - Jun 15, 05:40 UTCJun 15, 05:55 UTC15m
2026-06-15 UOF - Jun 15, 01:55 UTCJun 15, 02:10 UTC15m
2026-06-14 UOF - Jun 14, 22:45 UTCJun 14, 22:55 UTC10m
2026-06-12 UOF - Jun 12, 04:55 UTCJun 12, 05:05 UTC10m
2026-06-12 UOF - Jun 12, 01:40 UTCJun 12, 02:05 UTC25m
2026-06-10 UOF - Jun 10, 04:20 UTCJun 10, 04:30 UTC10m
2026-06-10 UOF - Jun 10, 01:10 UTCJun 10, 01:20 UTC10m
2026-06-09 UOF - Jun 9, 06:10 UTCJun 9, 06:20 UTC10m
2026-06-09 UOF - Jun 9, 01:10 UTCJun 9, 01:25 UTC15m
2026-06-04 UOF - Jun 4, 06:10 UTCJun 4, 06:20 UTC10m
2026-06-04 UOF - Jun 4, 01:10 UTCJun 4, 01:20 UTC10m
2026-06-02 UOF - Jun 2, 02:00 UTCJun 2, 02:15 UTC15m
2026-06-01 UOF - Jun 1, 22:50 UTCJun 1, 23:05 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-UOF page for operator, model, and routing details .

Mode-S 7C673D frequently asked

What is Mode-S code 7C673D?
7C673D is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UOF.
Where is Mode-S 7C673D registered?
Mode-S code 7C673D is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C673D broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C673D, octal 37063475, decimal 8,152,893.
What flights does 7C673D operate?
Mode-S 7C673D has broadcast 1 distinct callsign, including UOF.