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sensors Mode-S transponder

AD3AE9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9511R · CESSNA T206 Turbo Stationair · operated by BREWER WILLIAM B, BREWER DONNA L

Hex
AD3AE9
Octal
53235351
Decimal
11,352,809
Country
US
Tail
N9511R
Type
T206
No current signal · last broadcast Jul 26, 20:05 UTC
Flights observed
43
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 20:05 UTC

Last known position

Most recent position reported by Mode-S AD3AE9.

Country allocation

The ICAO 24-bit address AD3AE9 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
N9511R - 43 2026-07-26

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-07-26 N9511R - Jul 26, 19:35 UTCJul 26, 20:05 UTC30m
2026-07-26 N9511R - Jul 26, 00:25 UTCJul 26, 00:50 UTC25m
2026-07-25 N9511R - Jul 25, 18:35 UTCJul 25, 19:10 UTC35m
2026-07-25 N9511R - Jul 25, 00:45 UTCJul 25, 01:05 UTC20m
2026-07-24 N9511R - Jul 24, 18:35 UTCJul 24, 19:10 UTC35m
2026-07-22 N9511R - Jul 22, 23:30 UTCJul 23, 00:00 UTC30m
2026-07-22 N9511R - Jul 22, 18:30 UTCJul 22, 19:05 UTC35m
2026-07-21 N9511R - Jul 21, 23:35 UTCJul 22, 00:00 UTC25m
2026-07-21 N9511R - Jul 21, 18:20 UTCJul 21, 18:50 UTC30m
2026-07-21 N9511R - Jul 21, 00:15 UTCJul 21, 00:40 UTC25m
2026-07-20 N9511R - Jul 20, 18:25 UTCJul 20, 19:00 UTC35m
2026-07-19 N9511R - Jul 19, 00:00 UTCJul 19, 00:25 UTC25m
2026-07-18 N9511R - Jul 18, 19:15 UTCJul 18, 19:45 UTC30m
2026-07-16 N9511R - Jul 16, 22:59 UTCJul 16, 23:25 UTC25m
2026-07-16 N9511R - Jul 16, 17:35 UTCJul 16, 18:10 UTC35m
2026-07-14 N9511R - Jul 14, 23:45 UTCJul 15, 00:05 UTC20m
2026-07-14 N9511R - Jul 14, 18:45 UTCJul 14, 19:15 UTC30m
2026-07-14 N9511R - Jul 14, 00:00 UTCJul 14, 00:25 UTC25m
2026-07-13 N9511R - Jul 13, 18:35 UTCJul 13, 19:05 UTC30m
2026-07-13 N9511R - Jul 13, 01:20 UTCJul 13, 01:45 UTC25m
2026-07-12 N9511R - Jul 12, 23:25 UTCJul 12, 23:50 UTC25m
2026-07-11 N9511R - Jul 11, 17:55 UTCJul 11, 19:10 UTC1h 15m
2026-07-11 N9511R - Jul 11, 00:20 UTCJul 11, 00:45 UTC25m
2026-07-10 N9511R - Jul 10, 17:45 UTCJul 10, 18:25 UTC40m
2026-07-08 N9511R - Jul 8, 23:50 UTCJul 9, 00:25 UTC35m
2026-07-08 N9511R - Jul 8, 18:20 UTCJul 8, 19:15 UTC55m
2026-07-07 N9511R - Jul 7, 01:05 UTCJul 7, 01:35 UTC30m
2026-07-06 N9511R - Jul 6, 19:35 UTCJul 6, 20:05 UTC30m
2026-07-03 N9511R - Jul 3, 23:50 UTCJul 4, 00:15 UTC25m
2026-07-03 N9511R - Jul 3, 18:10 UTCJul 3, 18:40 UTC30m
2026-06-25 N9511R - Jun 25, 23:55 UTCJun 26, 00:24 UTC30m
2026-06-25 N9511R - Jun 25, 20:34 UTCJun 25, 21:10 UTC35m
2026-06-22 N9511R - Jun 22, 23:24 UTCJun 22, 23:50 UTC25m
2026-06-22 N9511R - Jun 22, 17:44 UTCJun 22, 18:19 UTC35m
2026-06-19 N9511R - Jun 19, 23:54 UTCJun 20, 00:24 UTC30m
2026-06-19 N9511R - Jun 19, 17:49 UTCJun 19, 18:20 UTC30m
2026-06-19 N9511R - Jun 19, 00:24 UTCJun 19, 00:49 UTC25m
2026-06-18 N9511R - Jun 18, 20:30 UTCJun 18, 21:00 UTC30m
2026-06-17 N9511R - Jun 17, 00:10 UTCJun 17, 00:35 UTC25m
2026-06-16 N9511R - Jun 16, 17:24 UTCJun 16, 17:59 UTC35m
2026-06-14 N9511R - Jun 14, 00:35 UTCJun 14, 01:00 UTC25m
2026-06-13 N9511R - Jun 13, 20:30 UTCJun 13, 21:00 UTC30m
2026-05-20 N9511R - May 20, 00:45 UTCMay 20, 01:00 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 N9511R page for operator, model, and routing details .

Mode-S AD3AE9 frequently asked

What is Mode-S code AD3AE9?
AD3AE9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9511R.
Where is Mode-S AD3AE9 registered?
Mode-S code AD3AE9 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 AD3AE9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD3AE9, octal 53235351, decimal 11,352,809.
What flights does AD3AE9 operate?
Mode-S AD3AE9 has broadcast 1 distinct callsign, including N9511R.