Apparatus

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sensors Mode-S transponder

AE04AB

ICAO 24-bit transponder address

Currently assigned to 99-00102 · CESSNA 560 Citation Ultra

Hex
AE04AB
Octal
53402253
Decimal
11,404,459
Tail
99-00102
Type
C560
Photo of 99-00102
Broadcasting now · callsign DUKE35 · 32,575 ft
Flights observed
4
Distinct callsigns
2
Country
-
Last broadcast
1d ago

Current position

AE04AB is currently broadcasting. Map zoomed to live position.

Callsign history 2 distinct

Callsign Airline Flights Last seen
DUKE74 - 3 2026-04-14
DUKE86 - 1 2026-04-13

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-14 DUKE74 - Apr 14, 09:30 UTCApr 14, 11:05 UTC1h 35m
2026-04-14 DUKE74 - Apr 14, 07:10 UTCApr 14, 08:20 UTC1h 10m
2026-04-14 DUKE74 - Apr 14, 06:10 UTCApr 14, 07:10 UTC1h 0m
2026-04-13 DUKE86 MLA → WIE Apr 13, 08:25 UTCApr 13, 10:55 UTC2h 30m

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 99-00102 page for operator, model, and routing details .

Mode-S AE04AB frequently asked

What is Mode-S code AE04AB?
AE04AB is an ICAO 24-bit transponder address. Assigned to 99-00102.
Is AE04AB broadcasting right now?
Yes. Mode-S AE04AB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE04AB, octal 53402253, decimal 11,404,459.
What flights does AE04AB operate?
Mode-S AE04AB has broadcast 2 distinct callsigns, including DUKE74, DUKE86.