sensors Mode-S transponder

C82AF1

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-IDH · AIRBUS HELICOPTERS EC-145 · operated by Helicopters Otago Limited

Hex
C82AF1
Octal
62025361
Decimal
13,118,193
Country
NZ
Tail
ZK-IDH
Type
EC45
No current signal · last broadcast 13h ago
Flights observed
5
Distinct callsigns
1
Country
NZ
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S C82AF1.

Country allocation

The ICAO 24-bit address C82AF1 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
ZKIDH - 5 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 ZKIDH - Apr 14, 10:00 UTCApr 14, 10:10 UTC10m
2026-04-14 ZKIDH - Apr 14, 08:10 UTCApr 14, 08:35 UTC25m
2026-04-13 ZKIDH - Apr 13, 07:40 UTCApr 13, 07:50 UTC10m
2026-04-13 ZKIDH - Apr 13, 03:20 UTCApr 13, 03:25 UTC5m
2026-04-12 ZKIDH - Apr 12, 19:45 UTCApr 12, 19:55 UTC10m

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

Mode-S C82AF1 frequently asked

What is Mode-S code C82AF1?
C82AF1 is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-IDH.
Where is Mode-S C82AF1 registered?
Mode-S code C82AF1 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 C82AF1 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C82AF1, octal 62025361, decimal 13,118,193.
What flights does C82AF1 operate?
Mode-S C82AF1 has broadcast 1 distinct callsign, including ZKIDH.