Apparatus

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sensors Mode-S transponder

AE620F

ICAO 24-bit transponder address

Currently assigned to 18-21003 · SIKORSKY UH-60 Black Hawk

Hex
AE620F
Octal
53461017
Decimal
11,428,367
Tail
18-21003
Type
H60
No current signal · last broadcast 3h ago
Flights observed
4
Distinct callsigns
2
Country
-
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S AE620F.

Callsign history 2 distinct

Callsign Airline Flights Last seen
CARD31 - 2 2026-04-28
CARD29 - 2 2026-05-13

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-05-13 CARD29 - May 13, 08:45 UTCMay 13, 09:00 UTC15m
2026-05-13 CARD29 - May 13, 07:45 UTCMay 13, 07:55 UTC10m
2026-04-28 CARD31 - Apr 28, 05:20 UTCApr 28, 05:50 UTC30m
2026-04-27 CARD31 - Apr 27, 07:25 UTCApr 27, 07:40 UTC15m

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 18-21003 page for operator, model, and routing details .

Mode-S AE620F frequently asked

What is Mode-S code AE620F?
AE620F is an ICAO 24-bit transponder address. Assigned to 18-21003.
Is AE620F broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE620F, octal 53461017, decimal 11,428,367.
What flights does AE620F operate?
Mode-S AE620F has broadcast 2 distinct callsigns, including CARD31, CARD29.