Apparatus

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sensors Mode-S transponder

A3D9D6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3471M · PIPER PA-28-140/150/160/180 · operated by PARIS AIR INC

Hex
A3D9D6
Octal
50754726
Decimal
10,738,134
Country
US
Tail
N3471M
Type
P28A
No current signal · last broadcast 6h ago
Flights observed
147
Distinct callsigns
1
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A3D9D6.

Country allocation

The ICAO 24-bit address A3D9D6 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
PFA324 - 147 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 PFA324 - Jul 14, 13:35 UTCJul 14, 14:05 UTC30m
2026-07-13 PFA324 - Jul 13, 12:15 UTCJul 13, 15:50 UTC3h 35m
2026-07-12 PFA324 - Jul 12, 13:10 UTCJul 12, 14:30 UTC1h 20m
2026-07-10 PFA324 - Jul 10, 18:25 UTCJul 10, 19:00 UTC35m
2026-07-10 PFA324 - Jul 10, 13:45 UTCJul 10, 14:05 UTC20m
2026-07-10 PFA324 - Jul 10, 11:40 UTCJul 10, 13:15 UTC1h 35m
2026-07-10 PFA324 - Jul 10, 00:30 UTCJul 10, 02:25 UTC1h 55m
2026-07-09 PFA324 - Jul 9, 18:40 UTCJul 9, 19:50 UTC1h 10m
2026-07-09 PFA324 - Jul 9, 14:10 UTCJul 9, 15:20 UTC1h 10m
2026-07-09 PFA324 - Jul 9, 11:55 UTCJul 9, 13:05 UTC1h 10m
2026-07-08 PFA324 - Jul 8, 20:25 UTCJul 8, 20:50 UTC25m
2026-07-08 PFA324 - Jul 8, 18:20 UTCJul 8, 19:30 UTC1h 10m
2026-07-08 PFA324 - Jul 8, 15:25 UTCJul 8, 16:00 UTC35m
2026-07-08 PFA324 - Jul 8, 12:55 UTCJul 8, 13:55 UTC1h 0m
2026-07-07 PFA324 - Jul 7, 16:05 UTCJul 7, 16:45 UTC40m
2026-07-01 PFA324 - Jul 1, 15:25 UTCJul 1, 15:55 UTC30m
2026-06-30 PFA324 - Jun 30, 14:40 UTCJun 30, 15:15 UTC35m
2026-06-30 PFA324 - Jun 30, 00:35 UTCJun 30, 00:55 UTC20m
2026-06-29 PFA324 - Jun 29, 19:09 UTCJun 29, 19:44 UTC35m
2026-06-29 PFA324 - Jun 29, 16:29 UTCJun 29, 17:14 UTC45m
2026-06-29 PFA324 - Jun 29, 13:49 UTCJun 29, 14:29 UTC40m
2026-06-29 PFA324 - Jun 29, 11:50 UTCJun 29, 12:34 UTC45m
2026-06-28 PFA324 - Jun 28, 13:04 UTCJun 28, 13:45 UTC40m
2026-06-26 PFA324 - Jun 26, 20:55 UTCJun 26, 22:05 UTC1h 10m
2026-06-26 PFA324 - Jun 26, 15:20 UTCJun 26, 16:00 UTC40m
2026-06-26 PFA324 - Jun 26, 12:50 UTCJun 26, 13:24 UTC35m
2026-06-25 PFA324 - Jun 25, 21:55 UTCJun 25, 22:34 UTC40m
2026-06-25 PFA324 - Jun 25, 14:59 UTCJun 25, 15:54 UTC55m
2026-06-24 PFA324 - Jun 24, 23:45 UTCJun 25, 02:14 UTC2h 30m
2026-06-24 PFA324 - Jun 24, 17:20 UTCJun 24, 17:59 UTC40m
2026-06-24 PFA324 - Jun 24, 14:45 UTCJun 24, 15:29 UTC45m
2026-06-23 PFA324 - Jun 23, 18:39 UTCJun 23, 19:39 UTC1h 0m
2026-06-23 PFA324 - Jun 23, 13:45 UTCJun 23, 14:15 UTC30m
2026-06-22 PFA324 - Jun 22, 21:35 UTCJun 22, 22:44 UTC1h 10m
2026-06-22 PFA324 - Jun 22, 17:40 UTCJun 22, 18:04 UTC25m
2026-06-19 PFA324 - Jun 19, 16:19 UTCJun 19, 16:59 UTC40m
2026-06-19 PFA324 - Jun 19, 13:50 UTCJun 19, 14:59 UTC1h 10m
2026-06-17 PFA324 - Jun 17, 17:20 UTCJun 17, 18:15 UTC55m
2026-06-17 PFA324 - Jun 17, 14:50 UTCJun 17, 15:50 UTC1h 0m
2026-06-15 PFA324 - Jun 15, 19:25 UTCJun 15, 21:09 UTC1h 45m
2026-06-15 PFA324 - Jun 15, 17:10 UTCJun 15, 17:34 UTC25m
2026-06-15 PFA324 - Jun 15, 16:04 UTCJun 15, 16:35 UTC30m
2026-06-15 PFA324 - Jun 15, 12:15 UTCJun 15, 14:10 UTC1h 55m
2026-06-14 PFA324 - Jun 14, 12:45 UTCJun 14, 15:10 UTC2h 25m
2026-06-12 PFA324 - Jun 12, 15:10 UTCJun 12, 15:45 UTC35m
2026-06-12 PFA324 - Jun 12, 12:50 UTCJun 12, 14:10 UTC1h 20m
2026-06-12 PFA324 - Jun 12, 00:35 UTCJun 12, 02:20 UTC1h 45m
2026-06-11 PFA324 - Jun 11, 21:35 UTCJun 11, 22:30 UTC55m
2026-06-11 PFA324 - Jun 11, 17:45 UTCJun 11, 18:40 UTC55m
2026-06-11 PFA324 - Jun 11, 16:55 UTCJun 11, 17:05 UTC10m

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 N3471M page for operator, model, and routing details .

Mode-S A3D9D6 frequently asked

What is Mode-S code A3D9D6?
A3D9D6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3471M.
Where is Mode-S A3D9D6 registered?
Mode-S code A3D9D6 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 A3D9D6 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3D9D6, octal 50754726, decimal 10,738,134.
What flights does A3D9D6 operate?
Mode-S A3D9D6 has broadcast 1 distinct callsign, including PFA324.