Apparatus

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sensors Mode-S transponder

7C66F1

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-UMB · PIPER PA-28-140/150/160/180 · operated by ROYAL VICTORIAN AERO CLUB.

Hex
7C66F1
Octal
37063361
Decimal
8,152,817
Country
AU
Tail
VH-UMB
Type
P28A
No current signal · last broadcast 16h ago
Flights observed
109
Distinct callsigns
1
Country
AU
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 7C66F1.

Country allocation

The ICAO 24-bit address 7C66F1 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
UMB - 109 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 UMB - May 30, 04:05 UTCMay 30, 05:00 UTC55m
2026-05-30 UMB - May 30, 02:45 UTCMay 30, 03:25 UTC40m
2026-05-30 UMB MBW → MBW May 30, 01:40 UTCMay 30, 02:06 UTC26m
2026-05-29 UMB - May 29, 05:00 UTCMay 29, 05:50 UTC50m
2026-05-29 UMB - May 29, 03:20 UTCMay 29, 04:25 UTC1h 5m
2026-05-29 UMB MBW → MBW May 29, 01:00 UTCMay 29, 02:00 UTC1h 0m
2026-05-25 UMB MBW → MBW May 25, 03:50 UTCMay 25, 05:05 UTC1h 15m
2026-05-25 UMB MBW → MBW May 25, 02:40 UTCMay 25, 02:50 UTC10m
2026-05-24 UMB MBW → MBW May 24, 01:25 UTCMay 24, 02:20 UTC55m
2026-05-23 UMB MBW → MBW May 23, 23:35 UTCMay 24, 00:35 UTC1h 0m
2026-05-23 UMB MBW → MBW May 23, 06:00 UTCMay 23, 06:50 UTC50m
2026-05-23 UMB MBW → MBW May 23, 03:05 UTCMay 23, 04:20 UTC1h 15m
2026-05-23 UMB MBW → MBW May 23, 01:00 UTCMay 23, 01:45 UTC45m
2026-05-22 UMB MBW → MBW May 22, 23:35 UTCMay 23, 00:30 UTC55m
2026-05-22 UMB MBW → MBW May 22, 04:55 UTCMay 22, 05:55 UTC1h 0m
2026-05-22 UMB MBW → MBW May 22, 01:15 UTCMay 22, 03:30 UTC2h 15m
2026-05-21 UMB - May 21, 22:05 UTCMay 21, 23:20 UTC1h 15m
2026-05-21 UMB MBW → MBW May 21, 05:45 UTCMay 21, 06:55 UTC1h 10m
2026-05-20 UMB - May 20, 05:45 UTCMay 20, 06:20 UTC35m
2026-05-20 UMB MBW → MBW May 20, 03:10 UTCMay 20, 04:30 UTC1h 20m
2026-05-19 UMB MBW → MBW May 19, 05:35 UTCMay 19, 06:25 UTC50m
2026-05-16 UMB - May 16, 05:25 UTCMay 16, 05:51 UTC26m
2026-05-16 UMB - May 16, 01:50 UTCMay 16, 04:45 UTC2h 55m
2026-05-15 UMB MBW → MBW May 15, 23:45 UTCMay 16, 00:45 UTC1h 0m
2026-05-15 UMB MBW → MBW May 15, 05:35 UTCMay 15, 06:40 UTC1h 5m
2026-05-15 UMB MBW → MBW May 15, 03:40 UTCMay 15, 04:40 UTC1h 0m
2026-05-15 UMB MBW → MBW May 15, 01:35 UTCMay 15, 02:20 UTC45m
2026-05-14 UMB MBW → MBW May 14, 22:35 UTCMay 15, 00:00 UTC1h 25m
2026-05-14 UMB MBW → MBW May 14, 00:05 UTCMay 14, 03:25 UTC3h 20m
2026-05-13 UMB - May 13, 06:05 UTCMay 13, 07:05 UTC1h 0m
2026-05-13 UMB - May 13, 04:25 UTCMay 13, 05:35 UTC1h 10m
2026-05-13 UMB MBW → MBW May 13, 01:00 UTCMay 13, 03:30 UTC2h 30m
2026-05-12 UMB MBW → MBW May 12, 07:20 UTCMay 12, 09:40 UTC2h 20m
2026-05-12 UMB MBW → MBW May 12, 04:10 UTCMay 12, 04:50 UTC40m
2026-05-12 UMB - May 12, 02:45 UTCMay 12, 03:00 UTC15m
2026-05-11 UMB MBW → MBW May 11, 03:50 UTCMay 11, 06:30 UTC2h 40m
2026-05-11 UMB MBW → MBW May 11, 01:10 UTCMay 11, 02:40 UTC1h 30m
2026-05-10 UMB MBW → MBW May 10, 05:50 UTCMay 10, 06:45 UTC55m
2026-05-10 UMB - May 10, 03:40 UTCMay 10, 04:25 UTC45m
2026-05-10 UMB - May 10, 02:20 UTCMay 10, 02:50 UTC30m
2026-05-08 UMB - May 8, 04:25 UTCMay 8, 05:20 UTC55m
2026-05-08 UMB - May 8, 02:49 UTCMay 8, 03:39 UTC50m
2026-05-07 UMB MBW → MBW May 7, 05:00 UTCMay 7, 06:00 UTC1h 0m
2026-05-07 UMB MBW → MBW May 7, 03:30 UTCMay 7, 04:30 UTC1h 0m
2026-05-06 UMB MBW → MBW May 6, 05:50 UTCMay 6, 06:45 UTC55m
2026-05-05 UMB MBW → MBW May 5, 06:00 UTCMay 5, 06:55 UTC55m
2026-05-05 UMB MBW → MBW May 5, 01:40 UTCMay 5, 02:35 UTC55m
2026-05-04 UMB - May 4, 01:24 UTCMay 4, 02:25 UTC1h 0m
2026-05-04 UMB - May 4, 00:10 UTCMay 4, 00:50 UTC40m
2026-05-02 UMB - May 2, 05:45 UTCMay 2, 06:35 UTC50m

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

Mode-S 7C66F1 frequently asked

What is Mode-S code 7C66F1?
7C66F1 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UMB.
Where is Mode-S 7C66F1 registered?
Mode-S code 7C66F1 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C66F1 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C66F1, octal 37063361, decimal 8,152,817.
What flights does 7C66F1 operate?
Mode-S 7C66F1 has broadcast 1 distinct callsign, including UMB.