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sensors Mode-S transponder

AD3251

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N95AC · DAHER Kodiak 100 · operated by ACI BLACKBIRD LLC

Hex
AD3251
Octal
53231121
Decimal
11,350,609
Country
US
Tail
N95AC
Type
K100
No current signal · last broadcast 12d ago
Flights observed
91
Distinct callsigns
1
Country
US
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S AD3251.

Country allocation

The ICAO 24-bit address AD3251 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
N95AC - 91 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N95AC - Jul 25, 17:50 UTCJul 25, 18:25 UTC35m
2026-07-25 N95AC - Jul 25, 16:15 UTCJul 25, 17:05 UTC50m
2026-07-25 N95AC HVN → HVN Jul 25, 14:00 UTCJul 25, 16:00 UTC2h 0m
2026-07-23 N95AC - Jul 23, 15:30 UTCJul 23, 20:35 UTC5h 5m
2026-07-23 N95AC HVN → HVN Jul 23, 15:15 UTCJul 23, 15:25 UTC10m
2026-07-21 N95AC - Jul 21, 21:10 UTCJul 21, 22:05 UTC55m
2026-07-21 N95AC - Jul 21, 19:40 UTCJul 21, 20:35 UTC55m
2026-07-21 N95AC HVN → HVN Jul 21, 15:00 UTCJul 21, 16:45 UTC1h 45m
2026-07-15 N95AC - Jul 15, 15:20 UTCJul 15, 16:45 UTC1h 25m
2026-07-15 N95AC - Jul 15, 14:10 UTCJul 15, 14:25 UTC15m
2026-07-14 N95AC - Jul 14, 18:15 UTCJul 14, 20:15 UTC2h 0m
2026-07-12 N95AC - Jul 12, 17:25 UTCJul 12, 19:45 UTC2h 20m
2026-07-12 N95AC - Jul 12, 12:50 UTCJul 12, 14:15 UTC1h 25m
2026-07-12 N95AC - Jul 12, 12:10 UTCJul 12, 12:20 UTC10m
2026-07-12 N95AC - Jul 12, 11:10 UTCJul 12, 11:30 UTC20m
2026-07-11 N95AC - Jul 11, 20:10 UTCJul 11, 21:55 UTC1h 45m
2026-07-11 N95AC - Jul 11, 19:30 UTCJul 11, 19:40 UTC10m
2026-07-11 N95AC - Jul 11, 17:45 UTCJul 11, 18:20 UTC35m
2026-07-11 N95AC - Jul 11, 15:10 UTCJul 11, 16:20 UTC1h 10m
2026-07-11 N95AC - Jul 11, 11:35 UTCJul 11, 14:10 UTC2h 35m
2026-07-10 N95AC - Jul 10, 17:40 UTCJul 10, 19:20 UTC1h 40m
2026-07-10 N95AC - Jul 10, 11:45 UTCJul 10, 13:20 UTC1h 35m
2026-07-07 N95AC - Jul 7, 15:25 UTCJul 7, 18:45 UTC3h 20m
2026-07-07 N95AC - Jul 7, 11:40 UTCJul 7, 14:45 UTC3h 5m
2026-07-06 N95AC - Jul 6, 13:30 UTCJul 6, 15:20 UTC1h 50m
2026-07-03 N95AC HVN → HVN Jul 3, 21:05 UTCJul 3, 21:25 UTC20m
2026-07-03 N95AC - Jul 3, 13:15 UTCJul 3, 14:50 UTC1h 35m
2026-07-02 N95AC - Jul 2, 12:55 UTCJul 2, 14:10 UTC1h 15m
2026-07-02 N95AC - Jul 2, 11:55 UTCJul 2, 12:10 UTC15m
2026-07-01 N95AC - Jul 1, 16:30 UTCJul 1, 17:45 UTC1h 15m
2026-07-01 N95AC - Jul 1, 14:15 UTCJul 1, 15:45 UTC1h 30m
2026-06-30 N95AC - Jun 30, 18:55 UTCJun 30, 23:10 UTC4h 15m
2026-06-30 N95AC - Jun 30, 17:55 UTCJun 30, 18:10 UTC15m
2026-06-30 N95AC - Jun 30, 17:05 UTCJun 30, 17:20 UTC15m
2026-06-30 N95AC - Jun 30, 15:40 UTCJun 30, 16:05 UTC25m
2026-06-30 N95AC - Jun 30, 11:00 UTCJun 30, 15:05 UTC4h 5m
2026-06-23 N95AC - Jun 23, 15:04 UTCJun 23, 16:14 UTC1h 10m
2026-06-23 N95AC - Jun 23, 10:35 UTCJun 23, 11:35 UTC1h 0m
2026-06-18 N95AC - Jun 18, 21:40 UTCJun 18, 22:50 UTC1h 10m
2026-06-18 N95AC - Jun 18, 14:01 UTCJun 18, 15:10 UTC1h 10m
2026-06-09 N95AC ACK → HVN Jun 9, 20:55 UTCJun 9, 22:00 UTC1h 5m
2026-06-09 N95AC - Jun 9, 19:30 UTCJun 9, 19:40 UTC10m
2026-06-09 N95AC - Jun 9, 11:30 UTCJun 9, 12:45 UTC1h 15m
2026-06-06 N95AC - Jun 6, 02:20 UTCJun 6, 03:25 UTC1h 5m
2026-06-05 N95AC - Jun 5, 22:00 UTCJun 5, 22:25 UTC25m
2026-06-05 N95AC - Jun 5, 20:35 UTCJun 5, 20:50 UTC15m
2026-06-04 N95AC - Jun 4, 18:40 UTCJun 4, 18:55 UTC15m
2026-06-04 N95AC - Jun 4, 15:20 UTCJun 4, 15:35 UTC15m
2026-06-03 N95AC - Jun 3, 20:20 UTCJun 3, 22:35 UTC2h 15m
2026-06-03 N95AC - Jun 3, 17:55 UTCJun 3, 19:40 UTC1h 45m

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 N95AC page for operator, model, and routing details .

Mode-S AD3251 frequently asked

What is Mode-S code AD3251?
AD3251 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N95AC.
Where is Mode-S AD3251 registered?
Mode-S code AD3251 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 AD3251 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD3251, octal 53231121, decimal 11,350,609.
What flights does AD3251 operate?
Mode-S AD3251 has broadcast 1 distinct callsign, including N95AC.