Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE4BF2

ICAO 24-bit transponder address

Currently assigned to 2318 · CASA HC-144A Ocean Sentry

Hex
AE4BF2
Octal
53445762
Decimal
11,422,706
Tail
2318
Type
CN35
No current signal · last broadcast 1d ago
Flights observed
3
Distinct callsigns
2
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AE4BF2.

Callsign history 2 distinct

Callsign Airline Flights Last seen
C2318 - 2 2026-04-16
C2311 - 1 2026-04-17

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-17 C2311 - Apr 17, 14:45 UTCApr 17, 15:15 UTC29m
2026-04-16 C2318 - Apr 16, 17:15 UTCApr 16, 17:50 UTC35m
2026-04-16 C2318 - Apr 16, 16:50 UTCApr 16, 17:10 UTC20m

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 2318 page for operator, model, and routing details .

Mode-S AE4BF2 frequently asked

What is Mode-S code AE4BF2?
AE4BF2 is an ICAO 24-bit transponder address. Assigned to 2318.
Is AE4BF2 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 AE4BF2, octal 53445762, decimal 11,422,706.
What flights does AE4BF2 operate?
Mode-S AE4BF2 has broadcast 2 distinct callsigns, including C2318, C2311.