Apparatus

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sensors Mode-S transponder

C81ACE

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-VCE · ROBIN Alpha

Hex
C81ACE
Octal
62015316
Decimal
13,114,062
Country
NZ
Tail
ZK-VCE
Type
R200
No current signal · last broadcast 1d ago
Flights observed
89
Distinct callsigns
1
Country
NZ
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S C81ACE.

Country allocation

The ICAO 24-bit address C81ACE falls within the block assigned to New Zealand (NZ) by ICAO Annex 10, Volume III. Every aircraft registered in New Zealand 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
ZKVCE - 89 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 ZKVCE - Jul 18, 00:10 UTCJul 18, 00:19 UTC10m
2026-07-17 ZKVCE - Jul 17, 23:20 UTCJul 17, 23:35 UTC15m
2026-07-17 ZKVCE NPL → NPL Jul 17, 21:50 UTCJul 17, 22:15 UTC25m
2026-07-16 ZKVCE NPL → NPL Jul 16, 03:25 UTCJul 16, 04:00 UTC35m
2026-07-12 ZKVCE NPL → NPL Jul 12, 01:50 UTCJul 12, 02:25 UTC35m
2026-07-11 ZKVCE - Jul 11, 01:15 UTCJul 11, 01:45 UTC30m
2026-07-03 ZKVCE - Jul 3, 23:15 UTCJul 3, 23:40 UTC25m
2026-07-03 ZKVCE - Jul 3, 03:10 UTCJul 3, 03:30 UTC20m
2026-07-03 ZKVCE NPL → NPL Jul 3, 01:15 UTCJul 3, 01:25 UTC10m
2026-07-02 ZKVCE NPL → NPL Jul 2, 23:35 UTCJul 3, 00:10 UTC35m
2026-07-02 ZKVCE NPL → NPL Jul 2, 21:55 UTCJul 2, 22:20 UTC25m
2026-06-24 ZKVCE - Jun 24, 23:40 UTCJun 24, 23:54 UTC15m
2026-06-17 ZKVCE - Jun 17, 23:50 UTCJun 18, 00:10 UTC20m
2026-06-17 ZKVCE - Jun 17, 22:15 UTCJun 17, 22:35 UTC20m
2026-06-16 ZKVCE NPL → NPL Jun 16, 01:55 UTCJun 16, 02:15 UTC20m
2026-06-16 ZKVCE - Jun 16, 00:15 UTCJun 16, 00:24 UTC10m
2026-06-07 ZKVCE NPL → NPL Jun 7, 05:40 UTCJun 7, 06:15 UTC35m
2026-06-07 ZKVCE - Jun 7, 02:19 UTCJun 7, 02:55 UTC35m
2026-06-03 ZKVCE NPL → NPL Jun 3, 04:25 UTCJun 3, 04:50 UTC25m
2026-05-29 ZKVCE - May 29, 22:50 UTCMay 29, 23:00 UTC10m
2026-05-28 ZKVCE NPL → NPL May 28, 23:05 UTCMay 28, 23:55 UTC50m
2026-05-27 ZKVCE NPL → NPL May 27, 05:49 UTCMay 27, 06:40 UTC50m
2026-05-27 ZKVCE NPL → NPL May 27, 04:04 UTCMay 27, 04:30 UTC25m
2026-05-26 ZKVCE - May 26, 04:30 UTCMay 26, 05:00 UTC30m
2026-05-26 ZKVCE - May 26, 02:29 UTCMay 26, 03:19 UTC50m
2026-05-25 ZKVCE - May 25, 22:10 UTCMay 25, 23:04 UTC55m
2026-05-25 ZKVCE NPL → NPL May 25, 06:10 UTCMay 25, 07:10 UTC1h 0m
2026-05-25 ZKVCE NPL → NPL May 25, 04:30 UTCMay 25, 04:55 UTC25m
2026-05-25 ZKVCE - May 25, 03:00 UTCMay 25, 03:30 UTC30m
2026-05-24 ZKVCE - May 24, 01:00 UTCMay 24, 01:20 UTC20m
2026-05-23 ZKVCE NPL → NPL May 23, 23:20 UTCMay 23, 23:40 UTC20m
2026-05-23 ZKVCE - May 23, 21:20 UTCMay 23, 22:00 UTC40m
2026-05-23 ZKVCE - May 23, 04:35 UTCMay 23, 05:10 UTC35m
2026-05-23 ZKVCE NPL → NPL May 23, 03:00 UTCMay 23, 03:20 UTC20m
2026-05-23 ZKVCE - May 23, 01:15 UTCMay 23, 01:45 UTC30m
2026-05-22 ZKVCE NPL → NPL May 22, 23:55 UTCMay 23, 00:20 UTC25m
2026-05-22 ZKVCE - May 22, 22:25 UTCMay 22, 22:40 UTC15m
2026-05-22 ZKVCE - May 22, 06:05 UTCMay 22, 06:50 UTC45m
2026-05-21 ZKVCE - May 21, 23:55 UTCMay 22, 00:35 UTC40m
2026-05-21 ZKVCE NPL → NPL May 21, 05:05 UTCMay 21, 05:40 UTC35m
2026-05-21 ZKVCE - May 21, 03:55 UTCMay 21, 04:25 UTC30m
2026-05-21 ZKVCE NPL → NPL May 21, 02:05 UTCMay 21, 02:30 UTC25m
2026-05-21 ZKVCE NPL → NPL May 21, 00:30 UTCMay 21, 00:40 UTC10m
2026-05-20 ZKVCE - May 20, 00:55 UTCMay 20, 01:35 UTC40m
2026-05-19 ZKVCE NPL → NPL May 19, 23:15 UTCMay 19, 23:35 UTC20m
2026-05-17 ZKVCE - May 17, 22:45 UTCMay 17, 23:15 UTC30m
2026-05-17 ZKVCE - May 17, 20:45 UTCMay 17, 21:01 UTC15m
2026-05-17 ZKVCE - May 17, 03:35 UTCMay 17, 03:50 UTC15m
2026-05-16 ZKVCE NPL → NPL May 16, 00:45 UTCMay 16, 01:10 UTC25m
2026-05-15 ZKVCE NPL → NPL May 15, 23:30 UTCMay 15, 23:50 UTC20m

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 ZK-VCE page for operator, model, and routing details .

Mode-S C81ACE frequently asked

What is Mode-S code C81ACE?
C81ACE is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-VCE.
Where is Mode-S C81ACE registered?
Mode-S code C81ACE is allocated to New Zealand (NZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C81ACE broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81ACE, octal 62015316, decimal 13,114,062.
What flights does C81ACE operate?
Mode-S C81ACE has broadcast 1 distinct callsign, including ZKVCE.