Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE634E

ICAO 24-bit transponder address

Currently assigned to 21-72470 · AIRBUS HELICOPTERS EC-145

Hex
AE634E
Octal
53461516
Decimal
11,428,686
Tail
21-72470
Type
EC45
No current signal · last broadcast 2d ago
Flights observed
4
Distinct callsigns
2
Country
-
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S AE634E.

Callsign history 2 distinct

Callsign Airline Flights Last seen
ROGUE4 - 2 2026-04-16
ROGUE13 - 2 2026-04-15

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-16 ROGUE4 - Apr 16, 21:24 UTCApr 16, 21:39 UTC15m
2026-04-16 ROGUE4 - Apr 16, 19:15 UTCApr 16, 19:30 UTC15m
2026-04-15 ROGUE13 - Apr 15, 01:05 UTCApr 15, 01:20 UTC15m
2026-04-14 ROGUE13 - Apr 14, 19:10 UTCApr 14, 19:25 UTC15m

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 21-72470 page for operator, model, and routing details .

Mode-S AE634E frequently asked

What is Mode-S code AE634E?
AE634E is an ICAO 24-bit transponder address. Assigned to 21-72470.
Is AE634E broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE634E, octal 53461516, decimal 11,428,686.
What flights does AE634E operate?
Mode-S AE634E has broadcast 2 distinct callsigns, including ROGUE4, ROGUE13.