Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE63E9

ICAO 24-bit transponder address

Hex
AE63E9
Octal
53461751
Decimal
11,428,841
No current signal · last broadcast 4d ago
Flights observed
4
Distinct callsigns
2
Country
-
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S AE63E9.

Callsign history 2 distinct

Callsign Airline Flights Last seen
DO01 - 3 2026-07-10
DE01 - 1 2026-06-30

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-07-10 DO01 - Jul 10, 12:35 UTCJul 10, 13:45 UTC1h 10m
2026-07-09 DO01 - Jul 9, 19:05 UTCJul 9, 20:25 UTC1h 20m
2026-07-09 DO01 - Jul 9, 15:25 UTCJul 9, 16:25 UTC1h 0m
2026-06-30 DE01 - Jun 30, 13:45 UTCJun 30, 14:15 UTC30m

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 AE63E9 frequently asked

What is Mode-S code AE63E9?
AE63E9 is an ICAO 24-bit transponder address.
Is AE63E9 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE63E9, octal 53461751, decimal 11,428,841.
What flights does AE63E9 operate?
Mode-S AE63E9 has broadcast 2 distinct callsigns, including DO01, DE01.