Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE6012

ICAO 24-bit transponder address

Currently assigned to 17-20931 · SIKORSKY UH-60 Black Hawk

Hex
AE6012
Octal
53460022
Decimal
11,427,858
Tail
17-20931
Type
H60
No current signal · last broadcast 14h ago
Flights observed
4
Distinct callsigns
2
Country
-
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S AE6012.

Callsign history 2 distinct

Callsign Airline Flights Last seen
KNIFE86 - 3 2026-04-16
KNIFE88 - 1 2026-04-19

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-19 KNIFE88 - Apr 19, 19:00 UTCApr 19, 20:50 UTC1h 50m
2026-04-16 KNIFE86 - Apr 16, 20:15 UTCApr 16, 20:35 UTC20m
2026-04-16 KNIFE86 - Apr 16, 18:40 UTCApr 16, 19:10 UTC30m
2026-04-16 KNIFE86 - Apr 16, 17:30 UTCApr 16, 18:00 UTC30m

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 17-20931 page for operator, model, and routing details .

Mode-S AE6012 frequently asked

What is Mode-S code AE6012?
AE6012 is an ICAO 24-bit transponder address. Assigned to 17-20931.
Is AE6012 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE6012, octal 53460022, decimal 11,427,858.
What flights does AE6012 operate?
Mode-S AE6012 has broadcast 2 distinct callsigns, including KNIFE86, KNIFE88.