Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE54D2

ICAO 24-bit transponder address

Currently assigned to 12-5769 · Lockheed Martin HC-130J Combat King II

Hex
AE54D2
Octal
53452322
Decimal
11,424,978
Tail
12-5769
Type
C30J
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 AE54D2.

Callsign history 2 distinct

Callsign Airline Flights Last seen
KING90 - 3 2026-05-27
KING95 - 1 2026-04-27

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-05-27 KING90 - May 27, 18:10 UTCMay 27, 18:55 UTC45m
2026-05-27 KING90 - May 27, 16:00 UTCMay 27, 17:30 UTC1h 30m
2026-05-26 KING90 - May 26, 20:05 UTCMay 26, 22:44 UTC2h 40m
2026-04-27 KING95 - Apr 27, 16:15 UTCApr 27, 17:40 UTC1h 25m

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 12-5769 page for operator, model, and routing details .

Mode-S AE54D2 frequently asked

What is Mode-S code AE54D2?
AE54D2 is an ICAO 24-bit transponder address. Assigned to 12-5769.
Is AE54D2 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 AE54D2, octal 53452322, decimal 11,424,978.
What flights does AE54D2 operate?
Mode-S AE54D2 has broadcast 2 distinct callsigns, including KING90, KING95.