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sensors Mode-S transponder

A4B347

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4014L · operated by ROBINSON HELICOPTER COMPANY

Hex
A4B347
Octal
51131507
Decimal
10,793,799
Country
US
Tail
N4014L
No current signal · last broadcast Jul 25, 11:10 UTC
Flights observed
20
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 11:10 UTC

Last known position

Most recent position reported by Mode-S A4B347.

Country allocation

The ICAO 24-bit address A4B347 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
N4014L - 20 2026-07-25

Recent flights last 20

DateFlightRouteTakeoffLandingDuration
2026-07-25 N4014L - Jul 25, 11:00 UTCJul 25, 11:10 UTC10m
2026-07-24 N4014L - Jul 24, 19:20 UTCJul 24, 19:30 UTC10m
2026-07-24 N4014L - Jul 24, 13:45 UTCJul 24, 13:55 UTC10m
2026-07-16 N4014L - Jul 16, 17:10 UTCJul 16, 17:25 UTC15m
2026-07-16 N4014L - Jul 16, 14:05 UTCJul 16, 14:20 UTC15m
2026-07-10 N4014L - Jul 10, 17:05 UTCJul 10, 17:25 UTC20m
2026-07-10 N4014L - Jul 10, 14:20 UTCJul 10, 15:15 UTC55m
2026-07-09 N4014L - Jul 9, 23:10 UTCJul 10, 00:00 UTC50m
2026-07-09 N4014L - Jul 9, 18:00 UTCJul 9, 20:50 UTC2h 50m
2026-07-09 N4014L - Jul 9, 14:10 UTCJul 9, 15:50 UTC1h 40m
2026-07-08 N4014L - Jul 8, 22:20 UTCJul 8, 22:35 UTC15m
2026-07-08 N4014L - Jul 8, 20:15 UTCJul 8, 21:30 UTC1h 15m
2026-07-08 N4014L - Jul 8, 17:55 UTCJul 8, 18:40 UTC45m
2026-07-08 N4014L - Jul 8, 14:20 UTCJul 8, 14:35 UTC15m
2026-07-02 N4014L TOA → TOA Jul 2, 16:05 UTCJul 2, 16:20 UTC15m
2026-06-22 N4014L - Jun 22, 19:24 UTCJun 22, 20:00 UTC35m
2026-06-22 N4014L - Jun 22, 17:00 UTCJun 22, 18:04 UTC1h 5m
2026-06-22 N4014L - Jun 22, 15:05 UTCJun 22, 15:29 UTC25m
2026-06-19 N4014L - Jun 19, 21:34 UTCJun 19, 21:49 UTC15m
2026-06-19 N4014L - Jun 19, 20:14 UTCJun 19, 20:24 UTC10m

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 N4014L page for operator, model, and routing details .

Mode-S A4B347 frequently asked

What is Mode-S code A4B347?
A4B347 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4014L.
Where is Mode-S A4B347 registered?
Mode-S code A4B347 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 A4B347 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 11:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4B347, octal 51131507, decimal 10,793,799.
What flights does A4B347 operate?
Mode-S A4B347 has broadcast 1 distinct callsign, including N4014L.