sensors Mode-S transponder

C87F00

ICAO 24-bit transponder address

Currently assigned to NZ7571 · BOEING 757-200

Hex
C87F00
Octal
62077400
Decimal
13,139,712
Tail
NZ7571
Type
B752
No current signal · last broadcast 1d ago
Flights observed
1
Distinct callsigns
1
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S C87F00.

Callsign history 1 distinct

Callsign Airline Flights Last seen
KIW763 - 1 2026-04-13

Recent flights last 1

DateFlightRouteTakeoffLandingDuration
2026-04-13 KIW763 - Apr 13, 07:30 UTCApr 13, 07:40 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 NZ7571 page for operator, model, and routing details .

Mode-S C87F00 frequently asked

What is Mode-S code C87F00?
C87F00 is an ICAO 24-bit transponder address. Assigned to NZ7571.
Is C87F00 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C87F00, octal 62077400, decimal 13,139,712.
What flights does C87F00 operate?
Mode-S C87F00 has broadcast 1 distinct callsign, including KIW763.