Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE4E54

ICAO 24-bit transponder address

Hex
AE4E54
Octal
53447124
Decimal
11,423,316
No current signal · last broadcast 1d ago
Flights observed
3
Distinct callsigns
1
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AE4E54.

Callsign history 1 distinct

Callsign Airline Flights Last seen
NTRDR11 - 3 2026-04-13

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-13 NTRDR11 - Apr 13, 22:20 UTCApr 13, 23:45 UTC1h 25m
2026-04-13 NTRDR11 - Apr 13, 19:50 UTCApr 13, 21:40 UTC1h 50m
2026-04-13 NTRDR11 - Apr 13, 18:10 UTCApr 13, 19:55 UTC1h 45m

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 AE4E54 frequently asked

What is Mode-S code AE4E54?
AE4E54 is an ICAO 24-bit transponder address.
Is AE4E54 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 AE4E54, octal 53447124, decimal 11,423,316.
What flights does AE4E54 operate?
Mode-S AE4E54 has broadcast 1 distinct callsign, including NTRDR11.