Apparatus

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sensors Mode-S transponder

C804CB

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-ETJ · CESSNA 152

Hex
C804CB
Octal
62002313
Decimal
13,108,427
Country
NZ
Tail
ZK-ETJ
Type
C152
No current signal · last broadcast Jul 20, 23:30 UTC
Flights observed
33
Distinct callsigns
1
Country
NZ
Last broadcast
Jul 20, 23:30 UTC

Last known position

Most recent position reported by Mode-S C804CB.

Country allocation

The ICAO 24-bit address C804CB 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
ZKETJ - 33 2026-07-20

Recent flights last 33

DateFlightRouteTakeoffLandingDuration
2026-07-20 ZKETJ - Jul 20, 22:10 UTCJul 20, 23:30 UTC1h 20m
2026-07-15 ZKETJ - Jul 15, 04:20 UTCJul 15, 04:45 UTC25m
2026-07-14 ZKETJ - Jul 14, 23:50 UTCJul 15, 01:05 UTC1h 15m
2026-07-14 ZKETJ - Jul 14, 21:35 UTCJul 14, 22:20 UTC45m
2026-07-13 ZKETJ - Jul 13, 03:50 UTCJul 13, 04:00 UTC10m
2026-07-12 ZKETJ - Jul 12, 23:50 UTCJul 13, 00:15 UTC25m
2026-07-12 ZKETJ - Jul 12, 21:40 UTCJul 12, 22:30 UTC50m
2026-07-04 ZKETJ - Jul 4, 02:25 UTCJul 4, 02:35 UTC10m
2026-07-03 ZKETJ - Jul 3, 21:40 UTCJul 3, 23:10 UTC1h 30m
2026-06-30 ZKETJ - Jun 30, 22:50 UTCJun 30, 23:45 UTC55m
2026-06-30 ZKETJ - Jun 30, 04:30 UTCJun 30, 05:00 UTC30m
2026-06-30 ZKETJ - Jun 30, 03:00 UTCJun 30, 03:15 UTC15m
2026-06-30 ZKETJ - Jun 30, 01:55 UTCJun 30, 02:10 UTC15m
2026-06-19 ZKETJ - Jun 19, 23:25 UTCJun 19, 23:54 UTC30m
2026-06-19 ZKETJ - Jun 19, 22:14 UTCJun 19, 22:39 UTC25m
2026-06-19 ZKETJ - Jun 19, 03:09 UTCJun 19, 03:20 UTC10m
2026-06-08 ZKETJ - Jun 8, 20:40 UTCJun 8, 20:50 UTC10m
2026-05-29 ZKETJ - May 29, 01:10 UTCMay 29, 01:50 UTC40m
2026-05-28 ZKETJ - May 28, 23:40 UTCMay 29, 00:05 UTC25m
2026-05-27 ZKETJ - May 27, 00:25 UTCMay 27, 00:44 UTC20m
2026-05-26 ZKETJ - May 26, 21:59 UTCMay 26, 22:44 UTC45m
2026-05-21 ZKETJ - May 21, 03:40 UTCMay 21, 04:20 UTC40m
2026-05-20 ZKETJ - May 20, 19:30 UTCMay 20, 20:10 UTC40m
2026-05-07 ZKETJ - May 7, 00:40 UTCMay 7, 01:45 UTC1h 5m
2026-05-06 ZKETJ - May 6, 22:35 UTCMay 6, 23:55 UTC1h 20m
2026-05-06 ZKETJ - May 6, 00:35 UTCMay 6, 01:15 UTC40m
2026-05-05 ZKETJ - May 5, 22:05 UTCMay 5, 22:50 UTC45m
2026-05-03 ZKETJ - May 3, 03:45 UTCMay 3, 04:15 UTC30m
2026-05-02 ZKETJ - May 2, 02:45 UTCMay 2, 03:05 UTC20m
2026-04-30 ZKETJ - Apr 30, 04:10 UTCApr 30, 04:25 UTC15m
2026-04-30 ZKETJ - Apr 30, 01:00 UTCApr 30, 01:10 UTC10m
2026-04-29 ZKETJ - Apr 29, 03:34 UTCApr 29, 03:45 UTC10m
2026-04-29 ZKETJ - Apr 29, 01:35 UTCApr 29, 02:20 UTC45m

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

Mode-S C804CB frequently asked

What is Mode-S code C804CB?
C804CB is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-ETJ.
Where is Mode-S C804CB registered?
Mode-S code C804CB 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 C804CB broadcasting right now?
No active broadcast right now. Last signal was Jul 20, 23:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C804CB, octal 62002313, decimal 13,108,427.
What flights does C804CB operate?
Mode-S C804CB has broadcast 1 distinct callsign, including ZKETJ.