sensors Mode-S transponder

A3A4ED

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N334CR · operated by AMERICAN AIRLINES INC

Hex
A3A4ED
Octal
50722355
Decimal
10,724,589
Country
US
Tail
N334CR
Broadcasting now · callsign ENY4068 · 15,450 ft
Flights observed
10
Distinct callsigns
6
Country
US
Last broadcast
1d ago

Current position

A3A4ED is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A3A4ED 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 6 distinct

Callsign Airline Flights Last seen
ENY4022 - 2 2026-04-13
ENY4021 - 2 2026-04-13
ENY3835 Envoy Air 2 2026-04-13
ENY3592 - 2 2026-04-12
ENY4086 - 1 2026-04-13
ENY3998 - 1 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 ENY4086 - Apr 13, 23:32 UTCApr 14, 01:41 UTC2h 9m
2026-04-13 ENY3835 ORD → BUF Apr 13, 19:50 UTCApr 13, 21:45 UTC1h 55m
2026-04-13 ENY3835 ORD → BUF Apr 13, 19:40 UTCApr 13, 21:52 UTC2h 12m
2026-04-13 ENY3998 PHX → MTY Apr 13, 16:20 UTCApr 13, 18:35 UTC2h 15m
2026-04-13 ENY4022 CLD → PHX Apr 13, 13:57 UTCApr 13, 14:48 UTC51m
2026-04-13 ENY4022 CLD → PHX Apr 13, 13:45 UTCApr 13, 14:34 UTC49m
2026-04-13 ENY4021 PHX → CLD Apr 13, 01:03 UTCApr 13, 01:48 UTC45m
2026-04-13 ENY4021 PHX → CLD Apr 13, 00:53 UTCApr 13, 01:47 UTC54m
2026-04-12 ENY3592 - Apr 12, 19:50 UTCApr 12, 20:15 UTC25m
2026-04-12 ENY3592 - Apr 12, 17:15 UTCApr 12, 18:40 UTC1h 25m

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 N334CR page for operator, model, and routing details .

Mode-S A3A4ED frequently asked

What is Mode-S code A3A4ED?
A3A4ED is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N334CR.
Where is Mode-S A3A4ED registered?
Mode-S code A3A4ED 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 A3A4ED broadcasting right now?
Yes. Mode-S A3A4ED is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3A4ED, octal 50722355, decimal 10,724,589.
What flights does A3A4ED operate?
Mode-S A3A4ED has broadcast 6 distinct callsigns, including ENY4022, ENY4021, ENY3835, ENY3592, ENY4086.