Apparatus

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sensors Mode-S transponder

AE56CF

ICAO 24-bit transponder address

Currently assigned to 13-20615 · SIKORSKY UH-60 Black Hawk

Hex
AE56CF
Octal
53453317
Decimal
11,425,487
Tail
13-20615
Type
H60
No current signal · last broadcast 4h ago
Flights observed
17
Distinct callsigns
2
Country
-
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S AE56CF.

Callsign history 2 distinct

Callsign Airline Flights Last seen
CROSS42 - 10 2026-04-30
THAZE12 - 7 2026-04-23

Recent flights last 17

DateFlightRouteTakeoffLandingDuration
2026-04-30 CROSS42 - Apr 30, 11:05 UTCApr 30, 11:15 UTC10m
2026-04-30 CROSS42 - Apr 30, 07:20 UTCApr 30, 07:35 UTC15m
2026-04-29 CROSS42 - Apr 29, 10:00 UTCApr 29, 10:15 UTC15m
2026-04-27 CROSS42 - Apr 27, 15:55 UTCApr 27, 16:05 UTC10m
2026-04-27 CROSS42 - Apr 27, 13:50 UTCApr 27, 15:05 UTC1h 15m
2026-04-27 CROSS42 - Apr 27, 10:45 UTCApr 27, 11:50 UTC1h 5m
2026-04-27 CROSS42 - Apr 27, 09:00 UTCApr 27, 09:15 UTC15m
2026-04-27 CROSS42 - Apr 27, 07:40 UTCApr 27, 07:55 UTC15m
2026-04-25 CROSS42 - Apr 25, 11:05 UTCApr 25, 12:25 UTC1h 20m
2026-04-24 CROSS42 - Apr 24, 15:35 UTCApr 24, 16:10 UTC35m
2026-04-23 THAZE12 - Apr 23, 14:55 UTCApr 23, 15:05 UTC10m
2026-04-23 THAZE12 - Apr 23, 13:40 UTCApr 23, 13:55 UTC15m
2026-04-23 THAZE12 - Apr 23, 12:10 UTCApr 23, 12:30 UTC20m
2026-04-23 THAZE12 - Apr 23, 09:45 UTCApr 23, 10:05 UTC20m
2026-04-22 THAZE12 - Apr 22, 16:30 UTCApr 22, 16:45 UTC15m
2026-04-22 THAZE12 - Apr 22, 14:40 UTCApr 22, 15:05 UTC25m
2026-04-22 THAZE12 - Apr 22, 12:30 UTCApr 22, 12:40 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 13-20615 page for operator, model, and routing details .

Mode-S AE56CF frequently asked

What is Mode-S code AE56CF?
AE56CF is an ICAO 24-bit transponder address. Assigned to 13-20615.
Is AE56CF broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE56CF, octal 53453317, decimal 11,425,487.
What flights does AE56CF operate?
Mode-S AE56CF has broadcast 2 distinct callsigns, including CROSS42, THAZE12.