Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE5BB3

ICAO 24-bit transponder address

Hex
AE5BB3
Octal
53455663
Decimal
11,426,739
Type
H60
Broadcasting now · callsign R27508 · 150 ft
Flights observed
3
Distinct callsigns
3
Country
-
Last broadcast
5h ago

Current position

AE5BB3 is currently broadcasting. Map zoomed to live position.

Callsign history 3 distinct

Callsign Airline Flights Last seen
R27520 - 1 2026-04-27
R27508 - 1 2026-04-28
2327509 - 1 2026-04-22

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-28 R27508 - Apr 28, 14:05 UTCApr 28, 15:05 UTC1h 0m
2026-04-27 R27520 - Apr 27, 15:15 UTCApr 27, 15:50 UTC35m
2026-04-22 2327509 - Apr 22, 16:20 UTCApr 22, 18:35 UTC2h 15m

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 AE5BB3 frequently asked

What is Mode-S code AE5BB3?
AE5BB3 is an ICAO 24-bit transponder address.
Is AE5BB3 broadcasting right now?
Yes. Mode-S AE5BB3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE5BB3, octal 53455663, decimal 11,426,739.
What flights does AE5BB3 operate?
Mode-S AE5BB3 has broadcast 3 distinct callsigns, including R27520, R27508, 2327509.