Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE5681

ICAO 24-bit transponder address

Currently assigned to 12-20534 · Sikorsky UH-60M Black Hawk

Hex
AE5681
Octal
53453201
Decimal
11,425,409
Tail
12-20534
Type
H60
No current signal · last broadcast Jul 22, 00:20 UTC
Flights observed
18
Distinct callsigns
1
Country
-
Last broadcast
Jul 22, 00:20 UTC

Last known position

Most recent position reported by Mode-S AE5681.

Callsign history 1 distinct

Callsign Airline Flights Last seen
G20534 - 18 2026-07-21

Recent flights last 18

DateFlightRouteTakeoffLandingDuration
2026-07-21 G20534 - Jul 21, 23:00 UTCJul 22, 00:20 UTC1h 20m
2026-07-21 G20534 - Jul 21, 21:30 UTCJul 21, 22:25 UTC55m
2026-07-21 G20534 - Jul 21, 18:40 UTCJul 21, 19:05 UTC25m
2026-07-21 G20534 - Jul 21, 16:05 UTCJul 21, 17:05 UTC1h 0m
2026-07-21 G20534 - Jul 21, 13:45 UTCJul 21, 15:20 UTC1h 35m
2026-07-10 G20534 - Jul 10, 01:25 UTCJul 10, 02:25 UTC1h 0m
2026-07-09 G20534 - Jul 9, 22:55 UTCJul 9, 23:05 UTC10m
2026-06-23 G20534 - Jun 23, 23:14 UTCJun 23, 23:44 UTC30m
2026-06-23 G20534 - Jun 23, 22:34 UTCJun 23, 23:05 UTC30m
2026-06-11 G20534 - Jun 11, 16:50 UTCJun 11, 17:45 UTC55m
2026-06-11 G20534 - Jun 11, 14:40 UTCJun 11, 15:15 UTC35m
2026-06-09 G20534 - Jun 9, 20:20 UTCJun 9, 20:55 UTC35m
2026-05-22 G20534 - May 22, 01:30 UTCMay 22, 02:10 UTC40m
2026-05-21 G20534 - May 21, 23:25 UTCMay 21, 23:55 UTC30m
2026-05-15 G20534 - May 15, 01:30 UTCMay 15, 01:40 UTC10m
2026-05-13 G20534 - May 13, 01:55 UTCMay 13, 02:15 UTC20m
2026-05-12 G20534 - May 12, 22:55 UTCMay 12, 23:15 UTC20m
2026-04-30 G20534 - Apr 30, 21:55 UTCApr 30, 22:35 UTC40m

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 12-20534 page for operator, model, and routing details .

Mode-S AE5681 frequently asked

What is Mode-S code AE5681?
AE5681 is an ICAO 24-bit transponder address. Assigned to 12-20534.
Is AE5681 broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 00:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE5681, octal 53453201, decimal 11,425,409.
What flights does AE5681 operate?
Mode-S AE5681 has broadcast 1 distinct callsign, including G20534.