Apparatus

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sensors Mode-S transponder

A4FD0E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N420QS · EMBRAER EMB-505 Phenom 300 · operated by NETJETS SALES INC, CLS TRANSPORTATION LOS ANGELES LLC, FEIGENBAUM FRANK, KENNEDY PARKER, VIGEO INVESTMENTS LLC

Hex
A4FD0E
Octal
51176416
Decimal
10,812,686
Country
US
Tail
N420QS
Type
E55P
No current signal · last broadcast 8h ago
Flights observed
155
Distinct callsigns
2
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A4FD0E.

Country allocation

The ICAO 24-bit address A4FD0E 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
EJA420 NetJets 152 2026-05-29
N420QS - 3 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA420 APF → PBI May 29, 22:30 UTCMay 29, 23:35 UTC1h 5m
2026-05-29 EJA420 APF → PBI May 29, 19:25 UTCMay 29, 20:55 UTC1h 30m
2026-05-29 EJA420 APF → PBI May 29, 14:40 UTCMay 29, 15:25 UTC45m
2026-05-29 EJA420 APF → PBI May 29, 13:05 UTCMay 29, 13:50 UTC45m
2026-05-28 EJA420 APF → PBI May 28, 20:15 UTCMay 28, 20:55 UTC40m
2026-05-28 EJA420 APF → PBI May 28, 17:35 UTCMay 28, 18:20 UTC45m
2026-05-28 EJA420 APF → PBI May 28, 15:40 UTCMay 28, 16:25 UTC45m
2026-05-28 EJA420 APF → PBI May 28, 11:10 UTCMay 28, 14:40 UTC3h 30m
2026-05-27 EJA420 APF → PBI May 27, 21:45 UTCMay 27, 22:20 UTC35m
2026-05-27 EJA420 APF → PBI May 27, 20:35 UTCMay 27, 21:10 UTC35m
2026-05-26 EJA420 APF → PBI May 26, 22:54 UTCMay 26, 23:39 UTC45m
2026-05-26 EJA420 APF → PBI May 26, 20:29 UTCMay 26, 21:59 UTC1h 30m
2026-05-26 EJA420 APF → PBI May 26, 18:19 UTCMay 26, 19:20 UTC1h 0m
2026-05-26 EJA420 APF → PBI May 26, 16:05 UTCMay 26, 17:09 UTC1h 5m
2026-05-26 EJA420 APF → PBI May 26, 14:40 UTCMay 26, 15:09 UTC30m
2026-05-25 EJA420 APF → PBI May 25, 23:19 UTCMay 26, 01:40 UTC2h 20m
2026-05-25 EJA420 APF → PBI May 25, 19:10 UTCMay 25, 22:15 UTC3h 5m
2026-05-25 EJA420 APF → PBI May 25, 16:25 UTCMay 25, 16:35 UTC10m
2026-05-24 EJA420 APF → PBI May 24, 19:05 UTCMay 24, 21:30 UTC2h 25m
2026-05-23 EJA420 APF → PBI May 23, 22:30 UTCMay 23, 23:00 UTC30m
2026-05-22 EJA420 APF → PBI May 22, 17:55 UTCMay 22, 18:25 UTC30m
2026-05-22 EJA420 APF → PBI May 22, 13:15 UTCMay 22, 17:05 UTC3h 50m
2026-05-22 EJA420 APF → PBI May 22, 11:35 UTCMay 22, 11:50 UTC15m
2026-05-21 EJA420 APF → PBI May 21, 20:05 UTCMay 21, 21:00 UTC55m
2026-05-21 EJA420 APF → PBI May 21, 18:35 UTCMay 21, 19:00 UTC25m
2026-05-21 EJA420 APF → PBI May 21, 16:45 UTCMay 21, 17:40 UTC55m
2026-05-21 EJA420 APF → PBI May 21, 14:20 UTCMay 21, 16:01 UTC1h 40m
2026-05-21 EJA420 APF → PBI May 21, 11:05 UTCMay 21, 12:55 UTC1h 50m
2026-05-20 EJA420 APF → PBI May 20, 16:30 UTCMay 20, 19:20 UTC2h 50m
2026-05-20 EJA420 APF → PBI May 20, 14:20 UTCMay 20, 14:40 UTC20m
2026-05-20 EJA420 APF → PBI May 20, 12:05 UTCMay 20, 13:35 UTC1h 30m
2026-05-19 EJA420 APF → PBI May 19, 17:10 UTCMay 19, 20:50 UTC3h 40m
2026-05-19 EJA420 APF → PBI May 19, 15:25 UTCMay 19, 16:00 UTC35m
2026-05-19 EJA420 APF → PBI May 19, 00:40 UTCMay 19, 01:05 UTC25m
2026-05-18 EJA420 APF → PBI May 18, 22:25 UTCMay 18, 23:25 UTC1h 0m
2026-05-18 EJA420 APF → PBI May 18, 17:00 UTCMay 18, 18:05 UTC1h 5m
2026-05-18 EJA420 APF → PBI May 18, 15:35 UTCMay 18, 16:00 UTC25m
2026-05-18 EJA420 APF → PBI May 18, 14:05 UTCMay 18, 14:40 UTC35m
2026-05-17 EJA420 APF → PBI May 17, 21:55 UTCMay 17, 22:30 UTC35m
2026-05-17 EJA420 APF → PBI May 17, 20:05 UTCMay 17, 20:30 UTC25m
2026-05-17 EJA420 APF → PBI May 17, 18:40 UTCMay 17, 19:20 UTC40m
2026-05-17 EJA420 APF → PBI May 17, 16:45 UTCMay 17, 17:20 UTC35m
2026-05-17 EJA420 APF → PBI May 17, 13:45 UTCMay 17, 15:50 UTC2h 5m
2026-05-16 EJA420 APF → PBI May 16, 21:40 UTCMay 16, 23:05 UTC1h 25m
2026-05-16 EJA420 APF → PBI May 16, 16:05 UTCMay 16, 18:20 UTC2h 15m
2026-05-16 EJA420 APF → PBI May 16, 13:35 UTCMay 16, 14:51 UTC1h 15m
2026-05-15 EJA420 APF → PBI May 15, 13:55 UTCMay 15, 15:50 UTC1h 54m
2026-05-15 EJA420 APF → PBI May 15, 11:50 UTCMay 15, 12:50 UTC1h 0m
2026-05-14 EJA420 APF → PBI May 14, 22:35 UTCMay 14, 23:35 UTC1h 0m
2026-05-14 EJA420 APF → PBI May 14, 20:10 UTCMay 14, 21:30 UTC1h 20m

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 N420QS page for operator, model, and routing details .

Mode-S A4FD0E frequently asked

What is Mode-S code A4FD0E?
A4FD0E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N420QS.
Where is Mode-S A4FD0E registered?
Mode-S code A4FD0E 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 A4FD0E broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4FD0E, octal 51176416, decimal 10,812,686.
What flights does A4FD0E operate?
Mode-S A4FD0E has broadcast 2 distinct callsigns, including EJA420, N420QS.