Apparatus

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sensors Mode-S transponder

C81E29

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-CIZ · SAAB 340

Hex
C81E29
Octal
62017051
Decimal
13,114,921
Country
NZ
Tail
ZK-CIZ
Type
SF34
No current signal · last broadcast 17d ago
Flights observed
242
Distinct callsigns
20
Country
NZ
Last broadcast
17d ago

Last known position

Most recent position reported by Mode-S C81E29.

Country allocation

The ICAO 24-bit address C81E29 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 20 distinct

Callsign Airline Flights Last seen
CVA703 Air Chathams 22 2026-06-09
CVA841 - 21 2026-06-09
CVA838 - 21 2026-06-09
CVA721 - 21 2026-06-25
CVA706 - 21 2026-06-24
CVA724 Air Chathams 20 2026-06-09
CVA664 - 15 2026-06-11
CVA643 - 14 2026-06-11
CVA829 - 11 2026-06-07
CVA824 - 11 2026-06-07
CVA709 Air Chathams 8 2026-05-28
CVA764 Air Chathams 5 2026-04-21
CVA671 - 5 2026-06-24
CVA722 Air Chathams 4 2026-06-01
CVA678 - 4 2026-06-24
CVA718 Air Chathams 3 2026-04-17
CVA673 - 3 2026-04-21
CVA648 - 3 2026-06-25
CVA719 Air Chathams 2 2026-06-01
CVA711 Air Chathams 2 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-26 CVA705 - Jun 26, 20:04 UTCJun 26, 20:44 UTC40m
2026-06-26 CVA702 - Jun 26, 18:29 UTCJun 26, 19:14 UTC45m
2026-06-26 CVA937 - Jun 26, 01:24 UTCJun 26, 02:20 UTC55m
2026-06-25 CVA648 - Jun 25, 23:19 UTCJun 26, 00:20 UTC1h 0m
2026-06-25 CVA721 - Jun 25, 04:14 UTCJun 25, 05:05 UTC50m
2026-06-24 CVA706 - Jun 24, 21:44 UTCJun 24, 22:29 UTC45m
2026-06-24 CVA671 - Jun 24, 20:20 UTCJun 24, 21:04 UTC45m
2026-06-24 CVA671 - Jun 24, 19:20 UTCJun 24, 19:29 UTC10m
2026-06-24 CVA678 - Jun 24, 06:25 UTCJun 24, 07:05 UTC40m
2026-06-24 CVA721 - Jun 24, 04:15 UTCJun 24, 05:05 UTC50m
2026-06-23 CVA706 - Jun 23, 21:29 UTCJun 23, 22:05 UTC35m
2026-06-11 CVA643 - Jun 11, 19:05 UTCJun 11, 20:05 UTC1h 0m
2026-06-11 CVA664 - Jun 11, 06:05 UTCJun 11, 07:05 UTC1h 0m
2026-06-11 CVA721 WAG → AKL Jun 11, 04:10 UTCJun 11, 04:50 UTC40m
2026-06-10 CVA706 AKL → WAG Jun 10, 21:10 UTCJun 10, 21:55 UTC45m
2026-06-10 CVA643 - Jun 10, 19:05 UTCJun 10, 20:00 UTC55m
2026-06-10 CVA664 - Jun 10, 06:05 UTCJun 10, 07:05 UTC1h 0m
2026-06-09 CVA703 WAG → AKL Jun 9, 23:00 UTCJun 9, 23:35 UTC35m
2026-06-09 CVA724 AKL → WAG Jun 9, 06:25 UTCJun 9, 07:15 UTC50m
2026-06-09 CVA841 - Jun 9, 04:35 UTCJun 9, 05:10 UTC35m
2026-06-09 CVA838 - Jun 9, 03:20 UTCJun 9, 03:55 UTC35m
2026-06-08 CVA643 - Jun 8, 19:10 UTCJun 8, 20:05 UTC55m
2026-06-08 CVA664 - Jun 8, 06:05 UTCJun 8, 07:20 UTC1h 15m
2026-06-07 CVA829 - Jun 7, 22:05 UTCJun 7, 22:40 UTC35m
2026-06-07 CVA824 - Jun 7, 21:05 UTCJun 7, 21:35 UTC30m
2026-06-07 CVA643 - Jun 7, 19:15 UTCJun 7, 20:05 UTC50m
2026-06-07 CVA664 - Jun 7, 06:10 UTCJun 7, 07:05 UTC55m
2026-06-07 CVA841 WHK → AKL Jun 7, 04:35 UTCJun 7, 05:10 UTC35m
2026-06-07 CVA838 - Jun 7, 03:25 UTCJun 7, 04:00 UTC35m
2026-06-05 CVA841 WHK → AKL Jun 5, 04:50 UTCJun 5, 05:40 UTC50m
2026-06-05 CVA838 - Jun 5, 03:35 UTCJun 5, 04:10 UTC35m
2026-06-04 CVA703 WAG → AKL Jun 4, 19:10 UTCJun 4, 20:00 UTC50m
2026-06-04 CVA724 AKL → WAG Jun 4, 06:25 UTCJun 4, 07:10 UTC45m
2026-06-04 CVA841 WHK → AKL Jun 4, 04:35 UTCJun 4, 05:15 UTC40m
2026-06-04 CVA838 - Jun 4, 03:20 UTCJun 4, 03:50 UTC30m
2026-06-03 CVA643 - Jun 3, 19:05 UTCJun 3, 20:05 UTC1h 0m
2026-06-03 CVA664 - Jun 3, 06:15 UTCJun 3, 07:20 UTC1h 5m
2026-06-02 CVA829 - Jun 2, 22:10 UTCJun 2, 22:45 UTC35m
2026-06-02 CVA824 - Jun 2, 20:50 UTCJun 2, 21:30 UTC40m
2026-06-02 CVA703 WAG → AKL Jun 2, 19:15 UTCJun 2, 20:00 UTC45m
2026-06-02 CVA724 AKL → WAG Jun 2, 06:20 UTCJun 2, 07:00 UTC40m
2026-06-02 CVA841 - Jun 2, 04:50 UTCJun 2, 05:30 UTC40m
2026-06-02 CVA838 - Jun 2, 03:45 UTCJun 2, 04:20 UTC35m
2026-06-02 CVA721 WAG → AKL Jun 2, 01:55 UTCJun 2, 02:50 UTC55m
2026-06-01 CVA706 AKL → WAG Jun 1, 20:55 UTCJun 1, 21:30 UTC35m
2026-06-01 CVA703 WAG → AKL Jun 1, 19:10 UTCJun 1, 20:10 UTC1h 0m
2026-06-01 CVA722 AKL → WAG Jun 1, 05:10 UTCJun 1, 05:55 UTC45m
2026-06-01 CVA719 WAG → AKL Jun 1, 03:10 UTCJun 1, 04:10 UTC1h 0m
2026-05-31 CVA710 AKL → WAG May 31, 23:50 UTCJun 1, 00:25 UTC35m
2026-05-31 CVA647 - May 31, 20:55 UTCMay 31, 22:20 UTC1h 25m

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

Mode-S C81E29 frequently asked

What is Mode-S code C81E29?
C81E29 is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-CIZ.
Where is Mode-S C81E29 registered?
Mode-S code C81E29 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 C81E29 broadcasting right now?
No active broadcast right now. Last signal was 17d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81E29, octal 62017051, decimal 13,114,921.
What flights does C81E29 operate?
Mode-S C81E29 has broadcast 20 distinct callsigns, including CVA703, CVA841, CVA838, CVA721, CVA706.