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sensors Mode-S transponder

C81775

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-HJR · ROBINSON R-22 Mariner

Hex
C81775
Octal
62013565
Decimal
13,113,205
Country
NZ
Tail
ZK-HJR
Type
R22
No current signal · last broadcast 4d ago
Flights observed
56
Distinct callsigns
1
Country
NZ
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S C81775.

Country allocation

The ICAO 24-bit address C81775 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
ZKHJR - 56 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 ZKHJR AMZ → AMZ Jul 10, 01:30 UTCJul 10, 04:55 UTC3h 25m
2026-07-09 ZKHJR - Jul 9, 01:20 UTCJul 9, 02:20 UTC1h 0m
2026-07-08 ZKHJR - Jul 8, 23:10 UTCJul 9, 00:05 UTC55m
2026-07-08 ZKHJR - Jul 8, 19:45 UTCJul 8, 20:20 UTC35m
2026-07-08 ZKHJR AMZ → AMZ Jul 8, 03:25 UTCJul 8, 03:40 UTC15m
2026-07-08 ZKHJR AMZ → AMZ Jul 8, 01:05 UTCJul 8, 02:45 UTC1h 40m
2026-07-07 ZKHJR AMZ → AMZ Jul 7, 23:05 UTCJul 7, 23:30 UTC25m
2026-07-07 ZKHJR AMZ → AMZ Jul 7, 21:15 UTCJul 7, 22:20 UTC1h 5m
2026-07-07 ZKHJR - Jul 7, 01:30 UTCJul 7, 02:40 UTC1h 10m
2026-07-05 ZKHJR AMZ → AMZ Jul 5, 03:50 UTCJul 5, 04:40 UTC50m
2026-07-04 ZKHJR - Jul 4, 23:10 UTCJul 4, 23:55 UTC45m
2026-07-03 ZKHJR AMZ → AMZ Jul 3, 02:25 UTCJul 3, 03:35 UTC1h 10m
2026-07-02 ZKHJR AMZ → AMZ Jul 2, 22:10 UTCJul 2, 22:45 UTC35m
2026-07-02 ZKHJR AMZ → AMZ Jul 2, 02:40 UTCJul 2, 03:15 UTC35m
2026-07-01 ZKHJR AMZ → AMZ Jul 1, 20:55 UTCJul 1, 22:05 UTC1h 10m
2026-07-01 ZKHJR AMZ → AMZ Jul 1, 04:20 UTCJul 1, 05:00 UTC40m
2026-07-01 ZKHJR - Jul 1, 01:30 UTCJul 1, 02:05 UTC35m
2026-06-30 ZKHJR AMZ → AMZ Jun 30, 23:40 UTCJul 1, 00:25 UTC45m
2026-06-30 ZKHJR AMZ → AMZ Jun 30, 21:20 UTCJun 30, 22:15 UTC55m
2026-06-30 ZKHJR AMZ → AMZ Jun 30, 00:00 UTCJun 30, 00:35 UTC35m
2026-06-29 ZKHJR AMZ → AMZ Jun 29, 21:24 UTCJun 29, 22:24 UTC1h 0m
2026-06-28 ZKHJR AMZ → AMZ Jun 28, 00:50 UTCJun 28, 01:40 UTC50m
2026-06-27 ZKHJR AMZ → AMZ Jun 27, 23:04 UTCJun 28, 00:04 UTC1h 0m
2026-06-27 ZKHJR AMZ → AMZ Jun 27, 05:25 UTCJun 27, 05:35 UTC10m
2026-06-27 ZKHJR AMZ → AMZ Jun 27, 01:35 UTCJun 27, 02:29 UTC55m
2026-06-26 ZKHJR AMZ → AMZ Jun 26, 20:44 UTCJun 26, 22:55 UTC2h 10m
2026-06-24 ZKHJR AMZ → AMZ Jun 24, 23:54 UTCJun 25, 01:14 UTC1h 20m
2026-06-20 ZKHJR - Jun 20, 03:54 UTCJun 20, 05:04 UTC1h 10m
2026-06-19 ZKHJR AMZ → AMZ Jun 19, 03:15 UTCJun 19, 04:00 UTC45m
2026-06-19 ZKHJR AMZ → AMZ Jun 19, 02:09 UTCJun 19, 02:39 UTC30m
2026-06-13 ZKHJR - Jun 13, 02:05 UTCJun 13, 02:30 UTC25m
2026-06-12 ZKHJR - Jun 12, 23:00 UTCJun 12, 23:45 UTC45m
2026-06-11 ZKHJR - Jun 11, 03:05 UTCJun 11, 03:15 UTC10m
2026-06-11 ZKHJR - Jun 11, 00:40 UTCJun 11, 01:20 UTC40m
2026-06-10 ZKHJR - Jun 10, 21:00 UTCJun 10, 21:30 UTC30m
2026-06-07 ZKHJR AMZ → AMZ Jun 7, 04:45 UTCJun 7, 05:00 UTC15m
2026-06-06 ZKHJR AMZ → AMZ Jun 6, 23:00 UTCJun 6, 23:44 UTC45m
2026-06-04 ZKHJR AMZ → AMZ Jun 4, 02:30 UTCJun 4, 03:20 UTC50m
2026-05-29 ZKHJR - May 29, 04:50 UTCMay 29, 05:10 UTC20m
2026-05-27 ZKHJR - May 27, 23:30 UTCMay 27, 23:50 UTC20m
2026-05-27 ZKHJR - May 27, 00:04 UTCMay 27, 00:19 UTC15m
2026-05-23 ZKHJR AMZ → AMZ May 23, 20:05 UTCMay 23, 20:20 UTC15m
2026-05-23 ZKHJR AMZ → AMZ May 23, 03:45 UTCMay 23, 05:15 UTC1h 30m
2026-05-22 ZKHJR - May 22, 04:15 UTCMay 22, 05:00 UTC45m
2026-05-16 ZKHJR AMZ → AMZ May 16, 22:55 UTCMay 16, 23:50 UTC55m
2026-05-16 ZKHJR AMZ → AMZ May 16, 20:45 UTCMay 16, 22:25 UTC1h 40m
2026-05-15 ZKHJR AMZ → AMZ May 15, 21:15 UTCMay 15, 21:35 UTC20m
2026-05-15 ZKHJR AMZ → AMZ May 15, 03:05 UTCMay 15, 04:00 UTC55m
2026-05-15 ZKHJR AMZ → AMZ May 15, 01:45 UTCMay 15, 02:20 UTC35m
2026-05-14 ZKHJR AMZ → AMZ May 14, 19:50 UTCMay 14, 20:30 UTC40m

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

Mode-S C81775 frequently asked

What is Mode-S code C81775?
C81775 is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-HJR.
Where is Mode-S C81775 registered?
Mode-S code C81775 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 C81775 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81775, octal 62013565, decimal 13,113,205.
What flights does C81775 operate?
Mode-S C81775 has broadcast 1 distinct callsign, including ZKHJR.