Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

C81A47

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-SWZ · ROBIN Alpha

Hex
C81A47
Octal
62015107
Decimal
13,113,927
Country
NZ
Tail
ZK-SWZ
Type
R200
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
193
Distinct callsigns
1
Country
NZ
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S C81A47.

Country allocation

The ICAO 24-bit address C81A47 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
ZKSWZ - 193 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ZKSWZ - Jul 26, 20:55 UTCJul 26, 21:30 UTC35m
2026-07-24 ZKSWZ - Jul 24, 01:50 UTCJul 24, 02:30 UTC40m
2026-07-17 ZKSWZ - Jul 17, 01:45 UTCJul 17, 01:55 UTC10m
2026-07-17 ZKSWZ - Jul 17, 01:00 UTCJul 17, 01:09 UTC10m
2026-07-15 ZKSWZ - Jul 15, 06:10 UTCJul 15, 06:50 UTC40m
2026-07-15 ZKSWZ - Jul 15, 01:15 UTCJul 15, 02:05 UTC50m
2026-07-15 ZKSWZ - Jul 15, 00:30 UTCJul 15, 00:40 UTC10m
2026-07-13 ZKSWZ - Jul 13, 06:05 UTCJul 13, 06:40 UTC35m
2026-07-08 ZKSWZ - Jul 8, 23:35 UTCJul 9, 00:15 UTC40m
2026-07-08 ZKSWZ - Jul 8, 20:45 UTCJul 8, 21:25 UTC40m
2026-07-08 ZKSWZ - Jul 8, 05:55 UTCJul 8, 07:00 UTC1h 5m
2026-07-08 ZKSWZ - Jul 8, 02:35 UTCJul 8, 03:10 UTC35m
2026-07-08 ZKSWZ - Jul 8, 01:05 UTCJul 8, 01:55 UTC50m
2026-07-07 ZKSWZ - Jul 7, 23:00 UTCJul 8, 00:00 UTC1h 0m
2026-07-07 ZKSWZ - Jul 7, 21:25 UTCJul 7, 22:10 UTC45m
2026-07-03 ZKSWZ - Jul 3, 03:30 UTCJul 3, 04:05 UTC35m
2026-07-03 ZKSWZ AMZ → AMZ Jul 3, 01:35 UTCJul 3, 02:35 UTC1h 0m
2026-07-02 ZKSWZ - Jul 2, 23:45 UTCJul 3, 00:25 UTC40m
2026-07-02 ZKSWZ - Jul 2, 22:05 UTCJul 2, 22:40 UTC35m
2026-07-02 ZKSWZ AMZ → AMZ Jul 2, 05:50 UTCJul 2, 06:55 UTC1h 5m
2026-07-02 ZKSWZ - Jul 2, 04:05 UTCJul 2, 04:55 UTC50m
2026-07-02 ZKSWZ - Jul 2, 01:45 UTCJul 2, 02:50 UTC1h 5m
2026-07-02 ZKSWZ - Jul 2, 00:15 UTCJul 2, 00:45 UTC30m
2026-07-01 ZKSWZ - Jul 1, 23:00 UTCJul 1, 23:40 UTC40m
2026-07-01 ZKSWZ - Jul 1, 21:00 UTCJul 1, 21:50 UTC50m
2026-07-01 ZKSWZ AMZ → AMZ Jul 1, 05:45 UTCJul 1, 07:00 UTC1h 15m
2026-07-01 ZKSWZ AMZ → AMZ Jul 1, 04:10 UTCJul 1, 04:45 UTC35m
2026-07-01 ZKSWZ - Jul 1, 02:55 UTCJul 1, 03:25 UTC30m
2026-07-01 ZKSWZ - Jul 1, 00:45 UTCJul 1, 01:35 UTC50m
2026-06-30 ZKSWZ - Jun 30, 23:10 UTCJun 30, 23:50 UTC40m
2026-06-30 ZKSWZ - Jun 30, 21:30 UTCJun 30, 22:15 UTC45m
2026-06-30 ZKSWZ AMZ → AMZ Jun 30, 06:00 UTCJun 30, 07:15 UTC1h 15m
2026-06-30 ZKSWZ - Jun 30, 04:30 UTCJun 30, 05:10 UTC40m
2026-06-30 ZKSWZ - Jun 30, 03:00 UTCJun 30, 03:35 UTC35m
2026-06-29 ZKSWZ - Jun 29, 22:44 UTCJun 29, 23:39 UTC55m
2026-06-28 ZKSWZ - Jun 28, 22:34 UTCJun 28, 23:34 UTC1h 0m
2026-06-28 ZKSWZ - Jun 28, 20:59 UTCJun 28, 21:45 UTC45m
2026-06-27 ZKSWZ - Jun 27, 03:44 UTCJun 27, 04:34 UTC50m
2026-06-27 ZKSWZ - Jun 27, 02:04 UTCJun 27, 02:55 UTC50m
2026-06-27 ZKSWZ - Jun 27, 00:34 UTCJun 27, 01:15 UTC40m
2026-06-26 ZKSWZ AMZ → AMZ Jun 26, 23:00 UTCJun 26, 23:44 UTC45m
2026-06-26 ZKSWZ - Jun 26, 21:24 UTCJun 26, 22:05 UTC40m
2026-06-23 ZKSWZ - Jun 23, 05:45 UTCJun 23, 06:34 UTC50m
2026-06-23 ZKSWZ AMZ → AMZ Jun 23, 04:05 UTCJun 23, 04:50 UTC45m
2026-06-23 ZKSWZ AMZ → AMZ Jun 23, 03:00 UTCJun 23, 03:25 UTC25m
2026-06-22 ZKSWZ - Jun 22, 05:54 UTCJun 22, 06:29 UTC35m
2026-06-22 ZKSWZ - Jun 22, 04:09 UTCJun 22, 04:54 UTC45m
2026-06-22 ZKSWZ - Jun 22, 02:50 UTCJun 22, 03:24 UTC35m
2026-06-21 ZKSWZ - Jun 21, 22:54 UTCJun 21, 23:44 UTC50m
2026-06-21 ZKSWZ - Jun 21, 20:54 UTCJun 21, 21:54 UTC1h 0m

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

Mode-S C81A47 frequently asked

What is Mode-S code C81A47?
C81A47 is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-SWZ.
Where is Mode-S C81A47 registered?
Mode-S code C81A47 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 C81A47 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81A47, octal 62015107, decimal 13,113,927.
What flights does C81A47 operate?
Mode-S C81A47 has broadcast 1 distinct callsign, including ZKSWZ.