Apparatus

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sensors Mode-S transponder

A9F8E8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7412J · PIPER PA-28-140/150/160/180 · operated by DUBOIS AVIATION INC

Hex
A9F8E8
Octal
52374350
Decimal
11,139,304
Country
US
Tail
N7412J
Type
P28A
No current signal · last broadcast 15h ago
Flights observed
228
Distinct callsigns
1
Country
US
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S A9F8E8.

Country allocation

The ICAO 24-bit address A9F8E8 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
N7412J - 228 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N7412J - Jul 17, 23:55 UTCJul 18, 00:55 UTC1h 0m
2026-07-17 N7412J - Jul 17, 20:40 UTCJul 17, 21:34 UTC55m
2026-07-17 N7412J - Jul 17, 17:30 UTCJul 17, 18:55 UTC1h 25m
2026-07-16 N7412J CNO → CNO Jul 16, 18:40 UTCJul 16, 19:50 UTC1h 10m
2026-07-16 N7412J - Jul 16, 16:49 UTCJul 16, 17:45 UTC55m
2026-07-15 N7412J - Jul 15, 21:35 UTCJul 15, 22:15 UTC40m
2026-07-15 N7412J - Jul 15, 19:45 UTCJul 15, 20:55 UTC1h 10m
2026-07-15 N7412J - Jul 15, 17:40 UTCJul 15, 18:50 UTC1h 10m
2026-07-14 N7412J CNO → CNO Jul 14, 19:30 UTCJul 14, 20:45 UTC1h 15m
2026-07-14 N7412J - Jul 14, 15:45 UTCJul 14, 17:40 UTC1h 55m
2026-07-13 N7412J - Jul 13, 22:05 UTCJul 13, 22:50 UTC45m
2026-07-13 N7412J - Jul 13, 17:25 UTCJul 13, 19:35 UTC2h 10m
2026-07-12 N7412J - Jul 12, 22:25 UTCJul 13, 00:10 UTC1h 45m
2026-07-12 N7412J - Jul 12, 21:45 UTCJul 12, 22:15 UTC30m
2026-07-12 N7412J - Jul 12, 20:35 UTCJul 12, 20:55 UTC20m
2026-07-11 N7412J CNO → CNO Jul 11, 19:55 UTCJul 11, 20:50 UTC55m
2026-07-11 N7412J CNO → CNO Jul 11, 16:35 UTCJul 11, 17:55 UTC1h 20m
2026-07-09 N7412J - Jul 9, 21:45 UTCJul 9, 22:45 UTC1h 0m
2026-07-09 N7412J - Jul 9, 19:55 UTCJul 9, 20:50 UTC55m
2026-07-09 N7412J - Jul 9, 16:40 UTCJul 9, 18:05 UTC1h 25m
2026-07-08 N7412J CNO → CNO Jul 8, 20:35 UTCJul 8, 21:05 UTC30m
2026-06-29 N7412J - Jun 29, 00:39 UTCJun 29, 01:14 UTC35m
2026-06-28 N7412J - Jun 28, 22:45 UTCJun 28, 23:54 UTC1h 10m
2026-06-28 N7412J - Jun 28, 20:34 UTCJun 28, 21:55 UTC1h 20m
2026-06-28 N7412J - Jun 28, 18:29 UTCJun 28, 19:25 UTC55m
2026-06-28 N7412J CNO → CNO Jun 28, 16:39 UTCJun 28, 17:30 UTC50m
2026-06-28 N7412J CNO → CNO Jun 28, 02:34 UTCJun 28, 03:40 UTC1h 5m
2026-06-27 N7412J CNO → CNO Jun 27, 22:49 UTCJun 27, 23:39 UTC50m
2026-06-27 N7412J - Jun 27, 20:44 UTCJun 27, 21:55 UTC1h 10m
2026-06-27 N7412J - Jun 27, 17:34 UTCJun 27, 18:35 UTC1h 0m
2026-06-27 N7412J CNO → CNO Jun 27, 16:35 UTCJun 27, 16:55 UTC20m
2026-06-27 N7412J - Jun 27, 05:04 UTCJun 27, 05:39 UTC35m
2026-06-27 N7412J - Jun 27, 04:00 UTCJun 27, 04:24 UTC25m
2026-06-27 N7412J - Jun 27, 00:44 UTCJun 27, 02:04 UTC1h 20m
2026-06-26 N7412J CNO → CNO Jun 26, 22:34 UTCJun 26, 23:49 UTC1h 15m
2026-06-26 N7412J - Jun 26, 20:34 UTCJun 26, 21:39 UTC1h 5m
2026-06-26 N7412J - Jun 26, 16:14 UTCJun 26, 17:00 UTC45m
2026-06-25 N7412J - Jun 25, 23:59 UTCJun 26, 00:45 UTC45m
2026-06-25 N7412J - Jun 25, 21:35 UTCJun 25, 22:49 UTC1h 15m
2026-06-25 N7412J ONT → CNO Jun 25, 18:00 UTCJun 25, 18:50 UTC50m
2026-06-24 N7412J CNO → CNO Jun 24, 23:04 UTCJun 24, 23:34 UTC30m
2026-06-24 N7412J - Jun 24, 19:24 UTCJun 24, 19:49 UTC25m
2026-06-24 N7412J - Jun 24, 18:34 UTCJun 24, 19:10 UTC35m
2026-06-24 N7412J - Jun 24, 16:59 UTCJun 24, 17:50 UTC50m
2026-06-24 N7412J ONT → CNO Jun 24, 00:44 UTCJun 24, 01:39 UTC55m
2026-06-23 N7412J - Jun 23, 21:39 UTCJun 23, 22:44 UTC1h 5m
2026-06-23 N7412J - Jun 23, 19:34 UTCJun 23, 20:49 UTC1h 15m
2026-06-23 N7412J - Jun 23, 16:39 UTCJun 23, 18:45 UTC2h 5m
2026-06-23 N7412J CNO → CNO Jun 23, 14:49 UTCJun 23, 15:19 UTC30m
2026-06-23 N7412J - Jun 23, 05:20 UTCJun 23, 05:59 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 N7412J page for operator, model, and routing details .

Mode-S A9F8E8 frequently asked

What is Mode-S code A9F8E8?
A9F8E8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7412J.
Where is Mode-S A9F8E8 registered?
Mode-S code A9F8E8 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 A9F8E8 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9F8E8, octal 52374350, decimal 11,139,304.
What flights does A9F8E8 operate?
Mode-S A9F8E8 has broadcast 1 distinct callsign, including N7412J.