Apparatus

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sensors Mode-S transponder

A74CCF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N57HR · AGUSTA AW-109 Grand · operated by SEMINOLE TRIBE OF FLORIDA DBA, SEMINOLE GAMING

Hex
A74CCF
Octal
51646317
Decimal
10,964,175
Country
US
Tail
N57HR
Type
A109
No current signal · last broadcast 1d ago
Flights observed
10
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A74CCF.

Country allocation

The ICAO 24-bit address A74CCF falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N57HR - 10 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 N57HR - Apr 13, 21:35 UTCApr 13, 21:55 UTC20m
2026-04-13 N57HR - Apr 13, 19:50 UTCApr 13, 20:10 UTC20m
2026-04-13 N57HR - Apr 13, 19:00 UTCApr 13, 19:15 UTC15m
2026-04-13 N57HR - Apr 13, 16:15 UTCApr 13, 17:35 UTC1h 20m
2026-04-13 N57HR - Apr 13, 16:00 UTCApr 13, 16:15 UTC15m
2026-04-13 N57HR - Apr 13, 13:45 UTCApr 13, 14:05 UTC20m
2026-04-13 N57HR - Apr 13, 12:20 UTCApr 13, 13:00 UTC40m
2026-04-13 N57HR - Apr 13, 11:55 UTCApr 13, 13:00 UTC1h 5m
2026-04-13 N57HR - Apr 13, 11:10 UTCApr 13, 12:10 UTC1h 0m
2026-04-12 N57HR - Apr 12, 18:35 UTCApr 12, 19:20 UTC45m

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 N57HR page for operator, model, and routing details .

Mode-S A74CCF frequently asked

What is Mode-S code A74CCF?
A74CCF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N57HR.
Where is Mode-S A74CCF registered?
Mode-S code A74CCF is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A74CCF broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A74CCF, octal 51646317, decimal 10,964,175.
What flights does A74CCF operate?
Mode-S A74CCF has broadcast 1 distinct callsign, including N57HR.