Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE57AE

ICAO 24-bit transponder address

Currently assigned to 14-20702 · SIKORSKY UH-60 Black Hawk

Hex
AE57AE
Octal
53453656
Decimal
11,425,710
Tail
14-20702
Type
H60
No current signal · last broadcast 1d ago
Flights observed
1
Distinct callsigns
1
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AE57AE.

Callsign history 1 distinct

Callsign Airline Flights Last seen
R20702 - 1 2026-04-13

Recent flights last 1

DateFlightRouteTakeoffLandingDuration
2026-04-13 R20702 HOP → HOP Apr 13, 21:10 UTCApr 13, 21:55 UTC45m

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 14-20702 page for operator, model, and routing details .

Mode-S AE57AE frequently asked

What is Mode-S code AE57AE?
AE57AE is an ICAO 24-bit transponder address. Assigned to 14-20702.
Is AE57AE broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE57AE, octal 53453656, decimal 11,425,710.
What flights does AE57AE operate?
Mode-S AE57AE has broadcast 1 distinct callsign, including R20702.