Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

C81A98

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-ICB · HUGHES Sky Knight

Hex
C81A98
Octal
62015230
Decimal
13,114,008
Country
NZ
Tail
ZK-ICB
Type
H269
No current signal · last broadcast 4d ago
Flights observed
19
Distinct callsigns
1
Country
NZ
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S C81A98.

Country allocation

The ICAO 24-bit address C81A98 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
ZKICB - 19 2026-07-09

Recent flights last 19

DateFlightRouteTakeoffLandingDuration
2026-07-09 ZKICB AMZ → AMZ Jul 9, 21:35 UTCJul 9, 22:25 UTC50m
2026-07-09 ZKICB - Jul 9, 20:15 UTCJul 9, 20:55 UTC40m
2026-07-05 ZKICB - Jul 5, 02:20 UTCJul 5, 02:30 UTC10m
2026-07-02 ZKICB AMZ → AMZ Jul 2, 20:55 UTCJul 2, 21:45 UTC50m
2026-07-01 ZKICB - Jul 1, 02:00 UTCJul 1, 02:45 UTC45m
2026-06-28 ZKICB - Jun 28, 04:59 UTCJun 28, 05:24 UTC25m
2026-06-26 ZKICB AMZ → AMZ Jun 26, 23:30 UTCJun 27, 00:00 UTC30m
2026-06-26 ZKICB AMZ → AMZ Jun 26, 22:10 UTCJun 26, 22:55 UTC45m
2026-06-24 ZKICB - Jun 24, 21:04 UTCJun 24, 21:29 UTC25m
2026-06-17 ZKICB - Jun 17, 23:05 UTCJun 18, 00:00 UTC55m
2026-06-17 ZKICB - Jun 17, 01:10 UTCJun 17, 01:35 UTC25m
2026-06-12 ZKICB - Jun 12, 23:55 UTCJun 13, 01:15 UTC1h 20m
2026-06-09 ZKICB - Jun 9, 23:15 UTCJun 10, 00:05 UTC50m
2026-06-09 ZKICB AMZ → AMZ Jun 9, 20:50 UTCJun 9, 21:30 UTC40m
2026-06-07 ZKICB - Jun 7, 23:25 UTCJun 8, 00:00 UTC35m
2026-06-07 ZKICB AMZ → AMZ Jun 7, 21:35 UTCJun 7, 22:10 UTC35m
2026-06-07 ZKICB - Jun 7, 02:30 UTCJun 7, 03:35 UTC1h 5m
2026-06-07 ZKICB AMZ → AMZ Jun 7, 00:55 UTCJun 7, 01:40 UTC45m
2026-06-02 ZKICB AMZ → AMZ Jun 2, 04:20 UTCJun 2, 05:05 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-ICB page for operator, model, and routing details .

Mode-S C81A98 frequently asked

What is Mode-S code C81A98?
C81A98 is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-ICB.
Where is Mode-S C81A98 registered?
Mode-S code C81A98 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 C81A98 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81A98, octal 62015230, decimal 13,114,008.
What flights does C81A98 operate?
Mode-S C81A98 has broadcast 1 distinct callsign, including ZKICB.