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sensors Mode-S transponder

ACD3FD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9256X · PIPER PA-44 Seminole · operated by BIRD ACQUISITION LLC DBA, AEROGUARD FLIGHT TRAINING CENTER

Hex
ACD3FD
Octal
53151775
Decimal
11,326,461
Country
US
Tail
N9256X
Type
PA44
No current signal · last broadcast Jul 22, 16:10 UTC
Flights observed
74
Distinct callsigns
1
Country
US
Last broadcast
Jul 22, 16:10 UTC

Last known position

Most recent position reported by Mode-S ACD3FD.

Country allocation

The ICAO 24-bit address ACD3FD 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
ASI1029 - 74 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 ASI1029 - Jul 22, 15:45 UTCJul 22, 16:10 UTC25m
2026-07-22 ASI1029 - Jul 22, 14:15 UTCJul 22, 15:10 UTC55m
2026-07-21 ASI1029 - Jul 21, 16:25 UTCJul 21, 17:40 UTC1h 15m
2026-07-21 ASI1029 - Jul 21, 14:30 UTCJul 21, 15:20 UTC50m
2026-07-20 ASI1029 - Jul 20, 17:45 UTCJul 20, 18:25 UTC40m
2026-07-20 ASI1029 - Jul 20, 16:25 UTCJul 20, 17:05 UTC40m
2026-07-20 ASI1029 - Jul 20, 14:20 UTCJul 20, 15:00 UTC40m
2026-07-20 ASI1029 - Jul 20, 09:40 UTCJul 20, 12:00 UTC2h 20m
2026-07-18 ASI1029 - Jul 18, 18:40 UTCJul 18, 19:15 UTC35m
2026-07-18 ASI1029 - Jul 18, 17:15 UTCJul 18, 17:55 UTC40m
2026-07-18 ASI1029 - Jul 18, 15:30 UTCJul 18, 16:25 UTC55m
2026-07-18 ASI1029 - Jul 18, 09:40 UTCJul 18, 11:50 UTC2h 10m
2026-07-18 ASI1029 - Jul 18, 08:30 UTCJul 18, 08:40 UTC10m
2026-07-17 ASI1029 - Jul 17, 16:00 UTCJul 17, 16:59 UTC1h 0m
2026-07-17 ASI1029 - Jul 17, 12:45 UTCJul 17, 13:50 UTC1h 5m
2026-07-16 ASI1029 - Jul 16, 18:50 UTCJul 16, 19:10 UTC20m
2026-07-15 ASI1029 - Jul 15, 21:50 UTCJul 15, 22:40 UTC50m
2026-07-14 ASI1029 - Jul 14, 22:05 UTCJul 14, 23:10 UTC1h 4m
2026-07-13 ASI1029 - Jul 13, 14:15 UTCJul 13, 15:40 UTC1h 25m
2026-07-11 ASI1029 - Jul 11, 14:00 UTCJul 11, 14:55 UTC55m
2026-07-10 ASI1029 - Jul 10, 17:05 UTCJul 10, 18:25 UTC1h 20m
2026-07-09 ASI1029 - Jul 9, 14:00 UTCJul 9, 15:35 UTC1h 35m
2026-07-07 ASI1029 - Jul 7, 18:40 UTCJul 7, 19:25 UTC45m
2026-07-07 ASI1029 - Jul 7, 13:15 UTCJul 7, 14:25 UTC1h 10m
2026-07-06 ASI1029 - Jul 6, 18:00 UTCJul 6, 19:00 UTC1h 0m
2026-07-03 ASI1029 - Jul 3, 19:45 UTCJul 3, 21:00 UTC1h 15m
2026-07-02 ASI1029 - Jul 2, 16:25 UTCJul 2, 17:30 UTC1h 5m
2026-07-02 ASI1029 - Jul 2, 13:05 UTCJul 2, 14:25 UTC1h 20m
2026-06-27 ASI1029 - Jun 27, 18:04 UTCJun 27, 19:39 UTC1h 35m
2026-06-27 ASI1029 - Jun 27, 15:24 UTCJun 27, 16:14 UTC50m
2026-06-26 ASI1029 - Jun 26, 22:55 UTCJun 27, 00:29 UTC1h 35m
2026-06-23 ASI1029 - Jun 23, 20:44 UTCJun 23, 22:25 UTC1h 40m
2026-06-23 ASI1029 - Jun 23, 19:04 UTCJun 23, 19:59 UTC55m
2026-06-23 ASI1029 - Jun 23, 16:20 UTCJun 23, 17:54 UTC1h 35m
2026-06-23 ASI1029 - Jun 23, 14:15 UTCJun 23, 15:24 UTC1h 10m
2026-06-23 ASI1029 - Jun 23, 01:15 UTCJun 23, 02:09 UTC55m
2026-06-22 ASI1029 - Jun 22, 22:54 UTCJun 23, 00:04 UTC1h 10m
2026-06-22 ASI1029 - Jun 22, 15:59 UTCJun 22, 17:50 UTC1h 50m
2026-06-21 ASI1029 - Jun 21, 22:44 UTCJun 22, 01:25 UTC2h 40m
2026-06-11 ASI1029 - Jun 11, 21:25 UTCJun 11, 22:45 UTC1h 20m
2026-06-09 ASI1029 - Jun 9, 16:45 UTCJun 9, 17:35 UTC50m
2026-06-08 ASI1029 - Jun 8, 00:00 UTCJun 8, 01:25 UTC1h 25m
2026-06-05 ASI1029 - Jun 5, 13:05 UTCJun 5, 14:05 UTC1h 0m
2026-06-03 ASI1029 - Jun 3, 19:15 UTCJun 3, 20:50 UTC1h 35m
2026-06-02 ASI1029 - Jun 2, 21:05 UTCJun 2, 22:25 UTC1h 20m
2026-06-02 ASI1029 - Jun 2, 16:45 UTCJun 2, 17:50 UTC1h 5m
2026-06-02 ASI1029 - Jun 2, 11:55 UTCJun 2, 12:50 UTC55m
2026-06-01 ASI1029 - Jun 1, 20:20 UTCJun 1, 22:00 UTC1h 40m
2026-06-01 ASI1029 - Jun 1, 14:20 UTCJun 1, 15:20 UTC1h 0m
2026-05-29 ASI1029 - May 29, 15:50 UTCMay 29, 16:30 UTC40m

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 N9256X page for operator, model, and routing details .

Mode-S ACD3FD frequently asked

What is Mode-S code ACD3FD?
ACD3FD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9256X.
Where is Mode-S ACD3FD registered?
Mode-S code ACD3FD 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 ACD3FD broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 16:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACD3FD, octal 53151775, decimal 11,326,461.
What flights does ACD3FD operate?
Mode-S ACD3FD has broadcast 1 distinct callsign, including ASI1029.