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sensors Mode-S transponder

C81390

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-JKA · CESSNA 172 Skyhawk

Hex
C81390
Octal
62011620
Decimal
13,112,208
Country
NZ
Tail
ZK-JKA
Type
C172
Broadcasting now · callsign ZKJKA · 2,700 ft
Flights observed
63
Distinct callsigns
1
Country
NZ
Last broadcast
1h ago

Current position

C81390 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C81390 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
ZKJKA - 63 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 ZKJKA - Jul 19, 01:40 UTCJul 19, 02:00 UTC20m
2026-07-19 ZKJKA - Jul 19, 00:20 UTCJul 19, 00:35 UTC15m
2026-07-18 ZKJKA - Jul 18, 22:25 UTCJul 18, 22:50 UTC25m
2026-07-18 ZKJKA - Jul 18, 03:45 UTCJul 18, 04:20 UTC35m
2026-07-17 ZKJKA - Jul 17, 23:05 UTCJul 17, 23:50 UTC45m
2026-07-17 ZKJKA - Jul 17, 03:30 UTCJul 17, 04:10 UTC40m
2026-07-17 ZKJKA - Jul 17, 00:45 UTCJul 17, 01:29 UTC45m
2026-07-16 ZKJKA - Jul 16, 22:45 UTCJul 16, 23:55 UTC1h 10m
2026-07-16 ZKJKA - Jul 16, 06:05 UTCJul 16, 06:15 UTC10m
2026-07-15 ZKJKA - Jul 15, 04:25 UTCJul 15, 05:00 UTC35m
2026-07-15 ZKJKA - Jul 15, 01:10 UTCJul 15, 01:55 UTC45m
2026-07-12 ZKJKA - Jul 12, 02:15 UTCJul 12, 03:01 UTC45m
2026-07-05 ZKJKA - Jul 5, 02:40 UTCJul 5, 03:40 UTC1h 0m
2026-07-05 ZKJKA - Jul 5, 01:15 UTCJul 5, 01:25 UTC10m
2026-07-02 ZKJKA - Jul 2, 04:20 UTCJul 2, 04:50 UTC30m
2026-07-02 ZKJKA - Jul 2, 03:05 UTCJul 2, 03:35 UTC30m
2026-07-02 ZKJKA - Jul 2, 01:55 UTCJul 2, 02:30 UTC35m
2026-07-01 ZKJKA - Jul 1, 02:40 UTCJul 1, 03:55 UTC1h 15m
2026-06-30 ZKJKA - Jun 30, 22:50 UTCJun 30, 23:30 UTC40m
2026-06-23 ZKJKA - Jun 23, 22:25 UTCJun 23, 23:10 UTC45m
2026-06-21 ZKJKA - Jun 21, 04:30 UTCJun 21, 05:10 UTC40m
2026-06-21 ZKJKA - Jun 21, 00:59 UTCJun 21, 01:49 UTC50m
2026-06-18 ZKJKA - Jun 18, 02:00 UTCJun 18, 02:35 UTC35m
2026-06-14 ZKJKA - Jun 14, 03:35 UTCJun 14, 04:25 UTC50m
2026-06-13 ZKJKA - Jun 13, 23:30 UTCJun 14, 00:25 UTC55m
2026-06-12 ZKJKA - Jun 12, 03:45 UTCJun 12, 04:00 UTC15m
2026-06-12 ZKJKA - Jun 12, 02:50 UTCJun 12, 03:10 UTC20m
2026-06-12 ZKJKA - Jun 12, 01:25 UTCJun 12, 02:05 UTC40m
2026-06-10 ZKJKA - Jun 10, 01:45 UTCJun 10, 02:35 UTC50m
2026-06-08 ZKJKA - Jun 8, 02:35 UTCJun 8, 03:05 UTC30m
2026-06-07 ZKJKA - Jun 7, 03:20 UTCJun 7, 04:10 UTC50m
2026-06-07 ZKJKA - Jun 7, 01:40 UTCJun 7, 02:40 UTC1h 0m
2026-06-06 ZKJKA - Jun 6, 01:00 UTCJun 6, 01:40 UTC40m
2026-05-31 ZKJKA - May 31, 00:45 UTCMay 31, 01:11 UTC26m
2026-05-30 ZKJKA - May 30, 03:30 UTCMay 30, 04:15 UTC45m
2026-05-30 ZKJKA - May 30, 00:30 UTCMay 30, 00:40 UTC10m
2026-05-29 ZKJKA - May 29, 23:45 UTCMay 29, 23:55 UTC10m
2026-05-29 ZKJKA - May 29, 22:20 UTCMay 29, 23:10 UTC50m
2026-05-29 ZKJKA - May 29, 21:40 UTCMay 29, 21:50 UTC10m
2026-05-27 ZKJKA - May 27, 02:44 UTCMay 27, 03:34 UTC50m
2026-05-27 ZKJKA - May 27, 01:09 UTCMay 27, 02:04 UTC55m
2026-05-24 ZKJKA - May 24, 01:15 UTCMay 24, 01:35 UTC20m
2026-05-22 ZKJKA - May 22, 22:30 UTCMay 22, 22:55 UTC25m
2026-05-22 ZKJKA - May 22, 21:10 UTCMay 22, 21:55 UTC45m
2026-05-16 ZKJKA - May 16, 04:30 UTCMay 16, 05:15 UTC45m
2026-05-15 ZKJKA - May 15, 22:40 UTCMay 15, 23:15 UTC35m
2026-05-15 ZKJKA - May 15, 01:05 UTCMay 15, 01:35 UTC30m
2026-05-09 ZKJKA - May 9, 23:25 UTCMay 10, 00:00 UTC35m
2026-05-08 ZKJKA - May 8, 22:30 UTCMay 8, 23:30 UTC1h 0m
2026-05-08 ZKJKA - May 8, 01:19 UTCMay 8, 01:45 UTC25m

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

Mode-S C81390 frequently asked

What is Mode-S code C81390?
C81390 is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-JKA.
Where is Mode-S C81390 registered?
Mode-S code C81390 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 C81390 broadcasting right now?
Yes. Mode-S C81390 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81390, octal 62011620, decimal 13,112,208.
What flights does C81390 operate?
Mode-S C81390 has broadcast 1 distinct callsign, including ZKJKA.