sensors Mode-S transponder

A4E39E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N414GM · operated by EXTRA AIRCRAFT USA LP

Hex
A4E39E
Octal
51161636
Decimal
10,806,174
Country
US
Tail
N414GM
No current signal · last broadcast 3d ago
Flights observed
16
Distinct callsigns
1
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A4E39E.

Country allocation

The ICAO 24-bit address A4E39E 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
N414GM - 16 2026-05-26

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-05-26 N414GM - May 26, 23:35 UTCMay 27, 00:10 UTC35m
2026-05-23 N414GM - May 23, 17:20 UTCMay 23, 17:55 UTC35m
2026-05-20 N414GM - May 20, 23:45 UTCMay 21, 00:25 UTC40m
2026-05-19 N414GM - May 19, 23:45 UTCMay 20, 00:15 UTC30m
2026-05-17 N414GM - May 17, 16:05 UTCMay 17, 16:45 UTC40m
2026-05-16 N414GM - May 16, 15:16 UTCMay 16, 15:25 UTC10m
2026-05-15 N414GM - May 15, 20:25 UTCMay 15, 20:40 UTC15m
2026-05-15 N414GM - May 15, 14:40 UTCMay 15, 15:05 UTC24m
2026-05-14 N414GM - May 14, 22:50 UTCMay 14, 23:05 UTC15m
2026-05-14 N414GM - May 14, 17:25 UTCMay 14, 18:05 UTC40m
2026-05-10 N414GM ABY → ABY May 10, 22:49 UTCMay 10, 23:25 UTC35m
2026-05-06 N414GM - May 6, 23:25 UTCMay 7, 00:00 UTC35m
2026-05-05 N414GM - May 5, 23:00 UTCMay 5, 23:30 UTC30m
2026-05-04 N414GM ABY → ABY May 4, 23:15 UTCMay 4, 23:50 UTC35m
2026-05-03 N414GM ABY → ABY May 3, 23:35 UTCMay 4, 00:10 UTC35m
2026-05-03 N414GM - May 3, 14:50 UTCMay 3, 15:05 UTC15m

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 N414GM page for operator, model, and routing details .

Mode-S A4E39E frequently asked

What is Mode-S code A4E39E?
A4E39E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N414GM.
Where is Mode-S A4E39E registered?
Mode-S code A4E39E 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 A4E39E broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4E39E, octal 51161636, decimal 10,806,174.
What flights does A4E39E operate?
Mode-S A4E39E has broadcast 1 distinct callsign, including N414GM.