sensors Mode-S transponder

A3DBCE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N348J

Hex
A3DBCE
Octal
50755716
Decimal
10,738,638
Country
US
Tail
N348J
No current signal · last broadcast Jul 25, 16:15 UTC
Flights observed
13
Distinct callsigns
2
Country
US
Last broadcast
Jul 25, 16:15 UTC

Last known position

Most recent position reported by Mode-S A3DBCE.

Country allocation

The ICAO 24-bit address A3DBCE 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 2 distinct

Callsign Airline Flights Last seen
N348J - 12 2026-07-25
N173PT - 1 2026-06-05

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-07-25 N348J - Jul 25, 14:50 UTCJul 25, 16:15 UTC1h 25m
2026-07-25 N348J - Jul 25, 13:40 UTCJul 25, 14:10 UTC30m
2026-07-14 N348J - Jul 14, 22:05 UTCJul 14, 22:15 UTC10m
2026-07-06 N348J - Jul 6, 17:00 UTCJul 6, 17:15 UTC15m
2026-07-06 N348J - Jul 6, 15:55 UTCJul 6, 16:10 UTC15m
2026-07-01 N348J - Jul 1, 13:00 UTCJul 1, 13:15 UTC15m
2026-07-01 N348J - Jul 1, 12:05 UTCJul 1, 12:20 UTC15m
2026-06-29 N348J - Jun 29, 12:39 UTCJun 29, 13:14 UTC35m
2026-06-28 N348J - Jun 28, 05:20 UTCJun 28, 06:00 UTC40m
2026-06-27 N348J - Jun 27, 07:24 UTCJun 27, 09:09 UTC1h 45m
2026-06-15 N348J - Jun 15, 16:04 UTCJun 15, 16:15 UTC10m
2026-06-05 N173PT - Jun 5, 18:20 UTCJun 5, 18:35 UTC15m
2026-04-20 N348J - Apr 20, 16:35 UTCApr 20, 17:05 UTC30m

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 N348J page for operator, model, and routing details .

Mode-S A3DBCE frequently asked

What is Mode-S code A3DBCE?
A3DBCE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N348J.
Where is Mode-S A3DBCE registered?
Mode-S code A3DBCE 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 A3DBCE broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 16:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3DBCE, octal 50755716, decimal 10,738,638.
What flights does A3DBCE operate?
Mode-S A3DBCE has broadcast 2 distinct callsigns, including N348J, N173PT.