Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AF3B45

ICAO 24-bit transponder address

Hex
AF3B45
Octal
53635505
Decimal
11,483,973
No current signal · last broadcast Jul 23, 21:35 UTC
Flights observed
2
Distinct callsigns
2
Country
-
Last broadcast
Jul 23, 21:35 UTC

Last known position

Most recent position reported by Mode-S AF3B45.

Callsign history 2 distinct

Callsign Airline Flights Last seen
ORCA41 - 1 2026-07-23
ORCA25 - 1 2026-07-15

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-07-23 ORCA41 - Jul 23, 21:05 UTCJul 23, 21:35 UTC30m
2026-07-15 ORCA25 - Jul 15, 02:40 UTCJul 15, 07:00 UTC4h 20m

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.

Mode-S AF3B45 frequently asked

What is Mode-S code AF3B45?
AF3B45 is an ICAO 24-bit transponder address.
Is AF3B45 broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AF3B45, octal 53635505, decimal 11,483,973.
What flights does AF3B45 operate?
Mode-S AF3B45 has broadcast 2 distinct callsigns, including ORCA41, ORCA25.