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sensors Mode-S transponder

C81BCE

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-PLK · BEECH 200 Super King Air

Hex
C81BCE
Octal
62015716
Decimal
13,114,318
Country
NZ
Tail
ZK-PLK
Type
BE20
No current signal · last broadcast 1h ago
Flights observed
175
Distinct callsigns
1
Country
NZ
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S C81BCE.

Country allocation

The ICAO 24-bit address C81BCE 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
SKL1 - 175 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKL1 - Jul 14, 02:35 UTCJul 14, 03:05 UTC30m
2026-07-14 SKL1 - Jul 14, 01:05 UTCJul 14, 01:35 UTC30m
2026-07-13 SKL1 - Jul 13, 22:50 UTCJul 13, 23:45 UTC55m
2026-07-13 SKL1 NPE → NPE Jul 13, 20:25 UTCJul 13, 21:00 UTC35m
2026-07-11 SKL1 WLG → NPE Jul 11, 02:00 UTCJul 11, 02:40 UTC40m
2026-07-10 SKL1 - Jul 10, 23:00 UTCJul 10, 23:45 UTC45m
2026-07-10 SKL1 - Jul 10, 02:15 UTCJul 10, 03:05 UTC50m
2026-07-09 SKL1 - Jul 9, 23:15 UTCJul 10, 00:05 UTC50m
2026-07-07 SKL1 WLG → NPE Jul 7, 02:55 UTCJul 7, 03:45 UTC50m
2026-07-07 SKL1 - Jul 7, 00:05 UTCJul 7, 00:45 UTC40m
2026-07-06 SKL1 - Jul 6, 05:55 UTCJul 6, 06:30 UTC35m
2026-07-06 SKL1 - Jul 6, 03:40 UTCJul 6, 04:05 UTC25m
2026-07-06 SKL1 - Jul 6, 00:50 UTCJul 6, 01:30 UTC40m
2026-07-05 SKL1 - Jul 5, 22:35 UTCJul 5, 23:10 UTC35m
2026-07-04 SKL1 - Jul 4, 02:45 UTCJul 4, 03:15 UTC30m
2026-07-04 SKL1 NPL → HLZ Jul 4, 00:05 UTCJul 4, 00:35 UTC30m
2026-07-03 SKL1 HLZ → NPL Jul 3, 07:30 UTCJul 3, 08:00 UTC30m
2026-07-03 SKL1 - Jul 3, 05:25 UTCJul 3, 05:55 UTC30m
2026-07-03 SKL1 - Jul 3, 02:25 UTCJul 3, 03:50 UTC1h 25m
2026-07-03 SKL1 NPL → NPL Jul 3, 00:20 UTCJul 3, 01:40 UTC1h 20m
2026-07-02 SKL1 - Jul 2, 06:35 UTCJul 2, 07:55 UTC1h 20m
2026-07-02 SKL1 - Jul 2, 04:35 UTCJul 2, 04:55 UTC20m
2026-07-02 SKL1 - Jul 2, 02:50 UTCJul 2, 03:15 UTC25m
2026-07-01 SKL1 - Jul 1, 22:05 UTCJul 1, 22:35 UTC30m
2026-07-01 SKL1 - Jul 1, 00:40 UTCJul 1, 01:45 UTC1h 5m
2026-06-30 SKL1 NPL → AKL Jun 30, 22:15 UTCJun 30, 22:55 UTC40m
2026-06-30 SKL1 - Jun 30, 01:35 UTCJun 30, 02:00 UTC25m
2026-06-29 SKL1 NPL → HLZ Jun 29, 23:05 UTCJun 29, 23:34 UTC30m
2026-06-29 SKL1 - Jun 29, 00:14 UTCJun 29, 00:44 UTC30m
2026-06-28 SKL1 NPL → HLZ Jun 28, 22:29 UTCJun 28, 22:59 UTC30m
2026-06-28 SKL1 - Jun 28, 05:40 UTCJun 28, 06:24 UTC45m
2026-06-27 SKL1 - Jun 27, 18:49 UTCJun 27, 20:44 UTC1h 55m
2026-06-26 SKL1 - Jun 26, 22:55 UTCJun 26, 23:44 UTC50m
2026-06-26 SKL1 - Jun 26, 20:20 UTCJun 26, 21:15 UTC55m
2026-06-25 SKL1 - Jun 25, 03:24 UTCJun 25, 04:04 UTC40m
2026-06-25 SKL1 - Jun 25, 01:50 UTCJun 25, 02:14 UTC25m
2026-06-24 SKL1 - Jun 24, 23:04 UTCJun 24, 23:54 UTC50m
2026-06-24 SKL1 - Jun 24, 20:30 UTCJun 24, 21:24 UTC55m
2026-06-24 SKL1 - Jun 24, 07:54 UTCJun 24, 08:45 UTC50m
2026-06-24 SKL1 - Jun 24, 06:35 UTCJun 24, 07:15 UTC40m
2026-06-24 SKL1 - Jun 24, 02:24 UTCJun 24, 03:35 UTC1h 10m
2026-06-24 SKL1 - Jun 24, 00:09 UTCJun 24, 01:44 UTC1h 35m
2026-06-23 SKL1 - Jun 23, 21:24 UTCJun 23, 21:54 UTC30m
2026-06-22 SKL1 - Jun 22, 23:10 UTCJun 23, 00:00 UTC50m
2026-06-22 SKL1 - Jun 22, 20:49 UTCJun 22, 21:35 UTC45m
2026-06-20 SKL1 - Jun 20, 00:49 UTCJun 20, 01:44 UTC55m
2026-06-19 SKL1 IVC → CHC Jun 19, 21:49 UTCJun 19, 23:00 UTC1h 10m
2026-06-19 SKL1 - Jun 19, 20:14 UTCJun 19, 20:44 UTC30m
2026-06-17 SKL1 - Jun 17, 23:25 UTCJun 18, 00:15 UTC50m
2026-06-17 SKL1 - Jun 17, 20:15 UTCJun 17, 21:00 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-PLK page for operator, model, and routing details .

Mode-S C81BCE frequently asked

What is Mode-S code C81BCE?
C81BCE is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-PLK.
Where is Mode-S C81BCE registered?
Mode-S code C81BCE 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 C81BCE broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81BCE, octal 62015716, decimal 13,114,318.
What flights does C81BCE operate?
Mode-S C81BCE has broadcast 1 distinct callsign, including SKL1.