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sensors Mode-S transponder

AD3B4B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9514J · PIPER PA-28-140/150/160/180 · operated by DU BOIS AVIATION INC

Hex
AD3B4B
Octal
53235513
Decimal
11,352,907
Country
US
Tail
N9514J
Type
P28A
No current signal · last broadcast 2d ago
Flights observed
67
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S AD3B4B.

Country allocation

The ICAO 24-bit address AD3B4B 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
N9514J - 67 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N9514J RIR → CNO Jul 26, 18:25 UTCJul 26, 18:35 UTC10m
2026-07-26 N9514J - Jul 26, 16:50 UTCJul 26, 17:00 UTC10m
2026-07-25 N9514J - Jul 25, 22:20 UTCJul 25, 23:35 UTC1h 15m
2026-07-25 N9514J CNO → CNO Jul 25, 20:35 UTCJul 25, 20:55 UTC20m
2026-07-25 N9514J - Jul 25, 17:35 UTCJul 25, 18:15 UTC40m
2026-07-25 N9514J CNO → HMT Jul 25, 17:00 UTCJul 25, 17:25 UTC25m
2026-07-24 N9514J - Jul 24, 16:45 UTCJul 24, 17:30 UTC45m
2026-07-23 N9514J CNO → CNO Jul 23, 22:20 UTCJul 23, 23:20 UTC1h 0m
2026-07-23 N9514J - Jul 23, 19:50 UTCJul 23, 20:35 UTC45m
2026-07-23 N9514J CNO → CNO Jul 23, 17:40 UTCJul 23, 18:35 UTC55m
2026-07-22 N9514J - Jul 22, 22:40 UTCJul 22, 23:40 UTC1h 0m
2026-07-22 N9514J CNO → CNO Jul 22, 20:40 UTCJul 22, 21:40 UTC1h 0m
2026-07-22 N9514J CNO → CNO Jul 22, 17:35 UTCJul 22, 18:30 UTC55m
2026-07-22 N9514J - Jul 22, 00:10 UTCJul 22, 00:30 UTC20m
2026-07-21 N9514J - Jul 21, 22:55 UTCJul 21, 23:25 UTC30m
2026-07-19 N9514J - Jul 19, 23:25 UTCJul 19, 23:50 UTC25m
2026-07-19 N9514J - Jul 19, 21:55 UTCJul 19, 22:45 UTC50m
2026-07-19 N9514J - Jul 19, 18:25 UTCJul 19, 19:40 UTC1h 15m
2026-07-18 N9514J - Jul 18, 20:15 UTCJul 18, 21:50 UTC1h 35m
2026-07-16 N9514J CNO → CNO Jul 16, 15:35 UTCJul 16, 16:25 UTC50m
2026-07-14 N9514J - Jul 14, 17:05 UTCJul 14, 18:05 UTC1h 0m
2026-07-13 N9514J - Jul 13, 17:45 UTCJul 13, 18:45 UTC1h 0m
2026-07-13 N9514J - Jul 13, 00:20 UTCJul 13, 01:01 UTC40m
2026-07-12 N9514J - Jul 12, 21:55 UTCJul 12, 23:10 UTC1h 15m
2026-07-09 N9514J - Jul 9, 16:35 UTCJul 9, 17:40 UTC1h 5m
2026-07-08 N9514J - Jul 8, 18:30 UTCJul 8, 19:45 UTC1h 15m
2026-07-08 N9514J CNO → CNO Jul 8, 00:40 UTCJul 8, 02:00 UTC1h 20m
2026-07-05 N9514J - Jul 5, 22:05 UTCJul 5, 23:50 UTC1h 45m
2026-07-05 N9514J - Jul 5, 17:40 UTCJul 5, 18:50 UTC1h 10m
2026-07-04 N9514J - Jul 4, 17:05 UTCJul 4, 17:50 UTC45m
2026-07-03 N9514J - Jul 3, 20:00 UTCJul 3, 21:40 UTC1h 40m
2026-07-03 N9514J - Jul 3, 17:45 UTCJul 3, 18:45 UTC1h 0m
2026-07-03 N9514J - Jul 3, 15:35 UTCJul 3, 16:35 UTC1h 0m
2026-07-02 N9514J - Jul 2, 22:25 UTCJul 2, 23:35 UTC1h 10m
2026-07-02 N9514J - Jul 2, 20:45 UTCJul 2, 21:35 UTC50m
2026-07-02 N9514J - Jul 2, 15:40 UTCJul 2, 16:30 UTC50m
2026-07-01 N9514J - Jul 1, 23:50 UTCJul 2, 00:35 UTC45m
2026-07-01 N9514J - Jul 1, 18:25 UTCJul 1, 19:50 UTC1h 25m
2026-07-01 N9514J CNO → CNO Jul 1, 14:45 UTCJul 1, 15:25 UTC40m
2026-07-01 N9514J CNO → CNO Jul 1, 00:55 UTCJul 1, 02:30 UTC1h 35m
2026-06-30 N9514J CNO → CNO Jun 30, 21:50 UTCJun 30, 22:45 UTC55m
2026-06-30 N9514J - Jun 30, 19:30 UTCJun 30, 20:55 UTC1h 25m
2026-06-30 N9514J CNO → CNO Jun 30, 16:40 UTCJun 30, 17:25 UTC45m
2026-06-29 N9514J - Jun 29, 18:30 UTCJun 29, 18:49 UTC20m
2026-06-28 N9514J - Jun 28, 20:39 UTCJun 28, 21:34 UTC55m
2026-06-28 N9514J CNO → CNO Jun 28, 18:49 UTCJun 28, 19:34 UTC45m
2026-06-28 N9514J - Jun 28, 16:49 UTCJun 28, 17:39 UTC50m
2026-06-28 N9514J - Jun 28, 03:40 UTCJun 28, 04:44 UTC1h 5m
2026-06-27 N9514J - Jun 27, 17:34 UTCJun 27, 18:35 UTC1h 0m
2026-06-26 N9514J - Jun 26, 21:39 UTCJun 26, 22:40 UTC1h 0m

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 N9514J page for operator, model, and routing details .

Mode-S AD3B4B frequently asked

What is Mode-S code AD3B4B?
AD3B4B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9514J.
Where is Mode-S AD3B4B registered?
Mode-S code AD3B4B 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 AD3B4B broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD3B4B, octal 53235513, decimal 11,352,907.
What flights does AD3B4B operate?
Mode-S AD3B4B has broadcast 1 distinct callsign, including N9514J.