Apparatus

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sensors Mode-S transponder

AE56A8

ICAO 24-bit transponder address

Currently assigned to 13-20576 · SIKORSKY UH-60 Black Hawk

Hex
AE56A8
Octal
53453250
Decimal
11,425,448
Tail
13-20576
Type
H60
No current signal · last broadcast Jul 23, 18:40 UTC
Flights observed
17
Distinct callsigns
1
Country
-
Last broadcast
Jul 23, 18:40 UTC

Last known position

Most recent position reported by Mode-S AE56A8.

Callsign history 1 distinct

Callsign Airline Flights Last seen
R20576 - 17 2026-07-23

Recent flights last 17

DateFlightRouteTakeoffLandingDuration
2026-07-23 R20576 FBK → FBK Jul 23, 18:30 UTCJul 23, 18:35 UTC5m
2026-07-23 R20576 - Jul 23, 18:15 UTCJul 23, 18:25 UTC10m
2026-07-23 R20576 - Jul 23, 17:40 UTCJul 23, 18:00 UTC20m
2026-07-23 R20576 - Jul 23, 17:15 UTCJul 23, 17:25 UTC10m
2026-07-22 R20576 - Jul 22, 20:05 UTCJul 22, 20:25 UTC20m
2026-07-22 R20576 - Jul 22, 19:35 UTCJul 22, 20:00 UTC25m
2026-07-22 R20576 - Jul 22, 19:15 UTCJul 22, 19:25 UTC10m
2026-07-22 R20576 - Jul 22, 18:55 UTCJul 22, 19:10 UTC15m
2026-07-22 R20576 - Jul 22, 18:40 UTCJul 22, 18:50 UTC10m
2026-07-21 R20576 - Jul 21, 20:55 UTCJul 21, 21:20 UTC25m
2026-07-21 R20576 FBK → FBK Jul 21, 20:40 UTCJul 21, 20:45 UTC5m
2026-07-16 R20576 - Jul 16, 21:10 UTCJul 16, 21:40 UTC30m
2026-07-16 R20576 - Jul 16, 17:00 UTCJul 16, 17:45 UTC45m
2026-06-25 R20576 FBK → FBK Jun 25, 22:49 UTCJun 26, 00:55 UTC2h 5m
2026-06-25 R20576 - Jun 25, 18:34 UTCJun 25, 20:05 UTC1h 30m
2026-06-24 R20576 FBK → FBK Jun 24, 23:45 UTCJun 25, 00:40 UTC55m
2026-05-10 R20576 - May 10, 01:39 UTCMay 10, 02:14 UTC35m

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 13-20576 page for operator, model, and routing details .

Mode-S AE56A8 frequently asked

What is Mode-S code AE56A8?
AE56A8 is an ICAO 24-bit transponder address. Assigned to 13-20576.
Is AE56A8 broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 18:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE56A8, octal 53453250, decimal 11,425,448.
What flights does AE56A8 operate?
Mode-S AE56A8 has broadcast 1 distinct callsign, including R20576.