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sensors Mode-S transponder

A65B74

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N509AW · BEECH 200 Super King Air · operated by CSI AVIATION INC

Hex
A65B74
Octal
51455564
Decimal
10,902,388
Country
US
Tail
N509AW
Type
BE20
No current signal · last broadcast 4h ago
Flights observed
302
Distinct callsigns
1
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A65B74.

Country allocation

The ICAO 24-bit address A65B74 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
CSI509 - 302 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 CSI509 - Jul 19, 00:55 UTCJul 19, 01:15 UTC20m
2026-07-18 CSI509 - Jul 18, 21:30 UTCJul 18, 22:05 UTC35m
2026-07-18 CSI509 - Jul 18, 17:10 UTCJul 18, 17:40 UTC30m
2026-07-18 CSI509 - Jul 18, 10:00 UTCJul 18, 10:30 UTC30m
2026-07-18 CSI509 - Jul 18, 07:30 UTCJul 18, 08:00 UTC30m
2026-07-18 CSI509 - Jul 18, 05:50 UTCJul 18, 06:45 UTC55m
2026-07-18 CSI509 - Jul 18, 03:20 UTCJul 18, 03:50 UTC30m
2026-07-18 CSI509 - Jul 18, 01:05 UTCJul 18, 01:34 UTC30m
2026-07-17 CSI509 - Jul 17, 21:25 UTCJul 17, 22:00 UTC35m
2026-07-17 CSI509 - Jul 17, 16:49 UTCJul 17, 16:59 UTC10m
2026-07-17 CSI509 - Jul 17, 15:00 UTCJul 17, 15:20 UTC20m
2026-07-17 CSI509 - Jul 17, 01:09 UTCJul 17, 01:39 UTC30m
2026-07-16 CSI509 - Jul 16, 22:35 UTCJul 16, 23:15 UTC40m
2026-07-16 CSI509 - Jul 16, 18:59 UTCJul 16, 19:35 UTC35m
2026-07-16 CSI509 - Jul 16, 17:10 UTCJul 16, 17:25 UTC15m
2026-07-16 CSI509 - Jul 16, 11:34 UTCJul 16, 12:05 UTC30m
2026-07-16 CSI509 - Jul 16, 08:45 UTCJul 16, 09:30 UTC45m
2026-07-16 CSI509 - Jul 16, 05:55 UTCJul 16, 06:30 UTC35m
2026-07-16 CSI509 - Jul 16, 03:50 UTCJul 16, 04:25 UTC35m
2026-07-16 CSI509 - Jul 16, 02:00 UTCJul 16, 02:30 UTC30m
2026-07-15 CSI509 - Jul 15, 12:55 UTCJul 15, 13:25 UTC30m
2026-07-15 CSI509 - Jul 15, 10:40 UTCJul 15, 11:15 UTC35m
2026-07-15 CSI509 - Jul 15, 09:00 UTCJul 15, 09:20 UTC20m
2026-07-15 CSI509 - Jul 15, 06:10 UTCJul 15, 06:50 UTC40m
2026-07-15 CSI509 - Jul 15, 03:20 UTCJul 15, 04:00 UTC40m
2026-07-14 CSI509 - Jul 14, 21:20 UTCJul 14, 22:30 UTC1h 10m
2026-07-14 CSI509 - Jul 14, 14:30 UTCJul 14, 14:45 UTC15m
2026-07-14 CSI509 - Jul 14, 12:55 UTCJul 14, 13:15 UTC20m
2026-07-13 CSI509 - Jul 13, 21:40 UTCJul 13, 21:55 UTC15m
2026-07-13 CSI509 - Jul 13, 18:30 UTCJul 13, 18:50 UTC20m
2026-07-13 CSI509 - Jul 13, 16:55 UTCJul 13, 17:40 UTC45m
2026-07-13 CSI509 - Jul 13, 09:25 UTCJul 13, 10:05 UTC40m
2026-07-13 CSI509 - Jul 13, 07:05 UTCJul 13, 07:25 UTC20m
2026-07-13 CSI509 - Jul 13, 05:55 UTCJul 13, 06:35 UTC40m
2026-07-13 CSI509 - Jul 13, 02:55 UTCJul 13, 03:30 UTC35m
2026-07-13 CSI509 - Jul 13, 01:01 UTCJul 13, 01:25 UTC25m
2026-07-12 CSI509 - Jul 12, 07:15 UTCJul 12, 08:01 UTC45m
2026-07-12 CSI509 - Jul 12, 04:55 UTCJul 12, 05:35 UTC40m
2026-07-12 CSI509 - Jul 12, 00:01 UTCJul 12, 00:30 UTC30m
2026-07-11 CSI509 - Jul 11, 21:50 UTCJul 11, 22:25 UTC35m
2026-07-11 CSI509 - Jul 11, 19:45 UTCJul 11, 20:00 UTC15m
2026-07-11 CSI509 - Jul 11, 17:45 UTCJul 11, 17:55 UTC10m
2026-07-10 CSI509 - Jul 10, 10:30 UTCJul 10, 10:55 UTC25m
2026-07-10 CSI509 - Jul 10, 08:20 UTCJul 10, 08:40 UTC20m
2026-07-10 CSI509 - Jul 10, 07:45 UTCJul 10, 08:15 UTC30m
2026-07-10 CSI509 - Jul 10, 03:40 UTCJul 10, 04:10 UTC30m
2026-07-10 CSI509 - Jul 10, 01:05 UTCJul 10, 01:30 UTC25m
2026-07-09 CSI509 - Jul 9, 03:20 UTCJul 9, 03:50 UTC30m
2026-07-09 CSI509 - Jul 9, 00:40 UTCJul 9, 01:05 UTC25m
2026-07-08 CSI509 - Jul 8, 18:50 UTCJul 8, 19:20 UTC30m

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 N509AW page for operator, model, and routing details .

Mode-S A65B74 frequently asked

What is Mode-S code A65B74?
A65B74 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N509AW.
Where is Mode-S A65B74 registered?
Mode-S code A65B74 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 A65B74 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 A65B74, octal 51455564, decimal 10,902,388.
What flights does A65B74 operate?
Mode-S A65B74 has broadcast 1 distinct callsign, including CSI509.