Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE5D3D

ICAO 24-bit transponder address

Currently assigned to 16-20820 · SIKORSKY UH-60 Black Hawk

Hex
AE5D3D
Octal
53456475
Decimal
11,427,133
Tail
16-20820
Type
H60
No current signal · last broadcast 11d ago
Flights observed
11
Distinct callsigns
4
Country
-
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S AE5D3D.

Callsign history 4 distinct

Callsign Airline Flights Last seen
AR20820 - 4 2026-05-27
R20820 - 3 2026-07-02
LS20820 - 2 2026-06-05
CH20820 - 2 2026-04-15

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-07-02 R20820 - Jul 2, 12:15 UTCJul 2, 12:25 UTC10m
2026-06-23 R20820 - Jun 23, 18:50 UTCJun 23, 19:04 UTC15m
2026-06-22 R20820 - Jun 22, 20:10 UTCJun 22, 21:05 UTC55m
2026-06-05 LS20820 - Jun 5, 05:40 UTCJun 5, 06:20 UTC40m
2026-05-29 LS20820 - May 29, 03:15 UTCMay 29, 04:00 UTC45m
2026-05-27 AR20820 - May 27, 03:29 UTCMay 27, 05:09 UTC1h 40m
2026-05-27 AR20820 - May 27, 00:04 UTCMay 27, 01:34 UTC1h 30m
2026-05-21 AR20820 - May 21, 02:35 UTCMay 21, 03:25 UTC50m
2026-05-20 AR20820 - May 20, 22:45 UTCMay 20, 23:30 UTC45m
2026-04-15 CH20820 - Apr 15, 01:05 UTCApr 15, 01:40 UTC35m
2026-04-14 CH20820 - Apr 14, 23:25 UTCApr 14, 23:35 UTC10m

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 16-20820 page for operator, model, and routing details .

Mode-S AE5D3D frequently asked

What is Mode-S code AE5D3D?
AE5D3D is an ICAO 24-bit transponder address. Assigned to 16-20820.
Is AE5D3D broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE5D3D, octal 53456475, decimal 11,427,133.
What flights does AE5D3D operate?
Mode-S AE5D3D has broadcast 4 distinct callsigns, including AR20820, R20820, LS20820, CH20820.