Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE04A1

ICAO 24-bit transponder address

Currently assigned to 99-5309 · Lockheed Martin WC-130J Weatherbird

Hex
AE04A1
Octal
53402241
Decimal
11,404,449
Tail
99-5309
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 AE04A1.

Callsign history 2 distinct

Callsign Airline Flights Last seen
TEAL69 - 2 2026-04-17
TEAL14 - 2 2026-04-16

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-17 TEAL69 - Apr 17, 00:15 UTCApr 17, 00:44 UTC30m
2026-04-16 TEAL69 - Apr 16, 21:39 UTCApr 16, 22:34 UTC55m
2026-04-16 TEAL14 - Apr 16, 17:15 UTCApr 16, 18:30 UTC1h 15m
2026-04-16 TEAL14 - Apr 16, 15:15 UTCApr 16, 17:10 UTC1h 55m

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 99-5309 page for operator, model, and routing details .

Mode-S AE04A1 frequently asked

What is Mode-S code AE04A1?
AE04A1 is an ICAO 24-bit transponder address. Assigned to 99-5309.
Is AE04A1 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 AE04A1, octal 53402241, decimal 11,404,449.
What flights does AE04A1 operate?
Mode-S AE04A1 has broadcast 2 distinct callsigns, including TEAL69, TEAL14.