Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3A4DE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N334CA · BEECH 300 Super King Air · operated by METREA SPECIAL AEROSPACE ISR INC

Hex
A3A4DE
Octal
50722336
Decimal
10,724,574
Country
US
Tail
N334CA
Type
BE30
No current signal · last broadcast 12h ago
Flights observed
11
Distinct callsigns
1
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A3A4DE.

Country allocation

The ICAO 24-bit address A3A4DE 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
N334CA - 11 2026-04-14

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 N334CA - Apr 14, 09:40 UTCApr 14, 11:05 UTC1h 25m
2026-04-14 N334CA - Apr 14, 07:10 UTCApr 14, 07:35 UTC25m
2026-04-14 N334CA - Apr 14, 05:40 UTCApr 14, 07:10 UTC1h 30m
2026-04-13 N334CA - Apr 13, 19:50 UTCApr 13, 23:35 UTC3h 45m
2026-04-13 N334CA - Apr 13, 18:05 UTCApr 13, 20:10 UTC2h 5m
2026-04-13 N334CA - Apr 13, 08:20 UTCApr 13, 09:40 UTC1h 20m
2026-04-13 N334CA - Apr 13, 07:55 UTCApr 13, 09:40 UTC1h 45m
2026-04-13 N334CA - Apr 13, 07:25 UTCApr 13, 08:15 UTC50m
2026-04-13 N334CA - Apr 13, 04:20 UTCApr 13, 04:55 UTC35m
2026-04-13 N334CA - Apr 13, 03:55 UTCApr 13, 04:55 UTC1h 0m
2026-04-13 N334CA - Apr 13, 01:40 UTCApr 13, 04:15 UTC2h 35m

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 N334CA page for operator, model, and routing details .

Mode-S A3A4DE frequently asked

What is Mode-S code A3A4DE?
A3A4DE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N334CA.
Where is Mode-S A3A4DE registered?
Mode-S code A3A4DE 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 A3A4DE broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3A4DE, octal 50722336, decimal 10,724,574.
What flights does A3A4DE operate?
Mode-S A3A4DE has broadcast 1 distinct callsign, including N334CA.