sensors Mode-S transponder

C81C9E

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-NFB · DE HAVILLAND DHC-8-300 Dash 8

Hex
C81C9E
Octal
62016236
Decimal
13,114,526
Country
NZ
Tail
ZK-NFB
Type
DH8C
No current signal · last broadcast 38m ago
Flights observed
244
Distinct callsigns
20
Country
NZ
Last broadcast
38m ago

Last known position

Most recent position reported by Mode-S C81C9E.

Country allocation

The ICAO 24-bit address C81C9E 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 20 distinct

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ANZ225L - May 30, 00:40 UTCMay 30, 01:05 UTC25m
2026-05-29 ANZ224L - May 29, 23:10 UTCMay 29, 23:35 UTC25m
2026-05-29 ANZ160L GIS → AKL May 29, 18:25 UTCMay 29, 19:15 UTC50m
2026-05-29 ANZ286L WLG → GIS May 29, 05:50 UTCMay 29, 06:35 UTC45m
2026-05-29 ANZ289L GIS → WLG May 29, 03:25 UTCMay 29, 04:20 UTC55m
2026-05-29 ANZ167L AKL → GIS May 29, 01:50 UTCMay 29, 02:35 UTC45m
2026-05-29 ANZ225L - May 29, 00:30 UTCMay 29, 00:50 UTC20m
2026-05-28 ANZ224L - May 28, 23:15 UTCMay 28, 23:30 UTC15m
2026-05-28 ANZ060L NSN → AKL May 28, 21:05 UTCMay 28, 21:45 UTC40m
2026-05-28 ANZ063L AKL → NSN May 28, 18:45 UTCMay 28, 19:45 UTC1h 0m
2026-05-28 ANZ024L NPE → AKL May 28, 06:00 UTCMay 28, 06:45 UTC45m
2026-05-28 ANZ019L AKL → NPE May 28, 04:20 UTCMay 28, 05:15 UTC55m
2026-05-28 ANZ273L KKE → AKL May 28, 01:30 UTCMay 28, 02:05 UTC35m
2026-05-28 ANZ276L AKL → KKE May 28, 00:05 UTCMay 28, 00:30 UTC25m
2026-05-27 ANZ267L KKE → AKL May 27, 22:15 UTCMay 27, 22:40 UTC25m
2026-05-27 ANZ266L AKL → KKE May 27, 20:45 UTCMay 27, 21:05 UTC20m
2026-05-27 ANZ064L NSN → AKL May 27, 18:45 UTCMay 27, 19:25 UTC40m
2026-05-26 ANZ315L WLG → NSN May 26, 20:34 UTCMay 26, 20:40 UTC5m
2026-05-26 ANZ507L GIS → WLG May 26, 18:45 UTCMay 26, 19:50 UTC1h 5m
2026-05-26 ANZ286L WLG → GIS May 26, 05:40 UTCMay 26, 06:25 UTC45m
2026-05-26 ANZ312L NSN → WLG May 26, 03:19 UTCMay 26, 03:30 UTC10m
2026-05-26 ANZ089L AKL → NSN May 26, 00:39 UTCMay 26, 01:34 UTC55m
2026-05-25 ANZ164L GIS → AKL May 25, 22:25 UTCMay 25, 23:10 UTC45m
2026-05-25 ANZ163L AKL → GIS May 25, 20:45 UTCMay 25, 21:24 UTC40m
2026-05-25 ANZ208L BHE → AKL May 25, 18:20 UTCMay 25, 19:15 UTC55m
2026-05-25 ANZ205L AKL → BHE May 25, 06:45 UTCMay 25, 07:45 UTC1h 0m
2026-05-25 ANZ066L NSN → AKL May 25, 04:45 UTCMay 25, 05:25 UTC40m
2026-05-25 ANZ848L CHC → NSN May 25, 02:15 UTCMay 25, 02:30 UTC15m
2026-05-24 ANZ768L CHC → NPL May 24, 23:05 UTCMay 24, 23:30 UTC25m
2026-05-24 ANZ841L NSN → CHC May 24, 19:10 UTCMay 24, 19:35 UTC25m
2026-05-24 ANZ087L AKL → NSN May 24, 08:20 UTCMay 24, 09:15 UTC55m
2026-05-24 ANZ024L NPE → AKL May 24, 06:10 UTCMay 24, 07:10 UTC1h 0m
2026-05-24 ANZ019L AKL → NPE May 24, 04:25 UTCMay 24, 05:20 UTC55m
2026-05-24 ANZ273L KKE → AKL May 24, 01:05 UTCMay 24, 01:30 UTC25m
2026-05-23 ANZ276L AKL → KKE May 23, 23:35 UTCMay 23, 23:55 UTC20m
2026-05-23 ANZ104L - May 23, 21:10 UTCMay 23, 22:05 UTC55m
2026-05-23 ANZ119L - May 23, 19:30 UTCMay 23, 20:25 UTC55m
2026-05-23 ANZ082L NSN → AKL May 23, 05:55 UTCMay 23, 06:40 UTC45m
2026-05-23 ANZ079L AKL → NSN May 23, 03:30 UTCMay 23, 04:25 UTC55m
2026-05-22 ANZ166L GIS → AKL May 22, 23:40 UTCMay 23, 00:30 UTC50m
2026-05-22 ANZ282L WLG → GIS May 22, 21:20 UTCMay 22, 22:15 UTC55m
2026-05-22 ANZ190L ASG → WLG May 22, 19:15 UTCMay 22, 20:05 UTC50m
2026-05-22 ANZ199L - May 22, 06:20 UTCMay 22, 07:25 UTC1h 5m
2026-05-22 ANZ895L NPE → WLG May 22, 04:55 UTCMay 22, 05:40 UTC45m
2026-05-22 ANZ886L WLG → NPE May 22, 03:30 UTCMay 22, 04:10 UTC40m
2026-05-22 ANZ730L BHE → WLG May 22, 01:45 UTCMay 22, 01:55 UTC10m
2026-05-22 ANZ729L WLG → BHE May 22, 00:35 UTCMay 22, 00:40 UTC5m
2026-05-21 ANZ793L NPL → WLG May 21, 22:30 UTCMay 21, 23:15 UTC45m
2026-05-21 ANZ792L WLG → NPL May 21, 21:05 UTCMay 21, 21:45 UTC40m
2026-05-21 ANZ302L NSN → WLG May 21, 19:55 UTCMay 21, 20:10 UTC15m

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

Mode-S C81C9E frequently asked

What is Mode-S code C81C9E?
C81C9E is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-NFB.
Where is Mode-S C81C9E registered?
Mode-S code C81C9E 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 C81C9E broadcasting right now?
No active broadcast right now. Last signal was 38m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81C9E, octal 62016236, decimal 13,114,526.
What flights does C81C9E operate?
Mode-S C81C9E has broadcast 20 distinct callsigns, including ANZ282L, ANZ166L, ANZ793L, ANZ792L, ANZ730L.