Apparatus

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sensors Mode-S transponder

A487EF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N391QS · EMBRAER EMB-505 Phenom 300 · operated by NETJETS SALES INC, CAWM LLC, LITTLE PLANE LLC, RENDEZVOUS ASSET MANAGEMENT LLC, TVPX ARS INC TRUSTEE

Hex
A487EF
Octal
51103757
Decimal
10,782,703
Country
US
Tail
N391QS
Type
E55P
No current signal · last broadcast 26d ago
Flights observed
117
Distinct callsigns
2
Country
US
Last broadcast
26d ago

Last known position

Most recent position reported by Mode-S A487EF.

Country allocation

The ICAO 24-bit address A487EF 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
EJA391 NetJets 111 2026-07-26
N391QS - 6 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EJA391 CMH → BNA Jul 26, 20:20 UTCJul 26, 21:10 UTC50m
2026-07-26 EJA391 CMH → BNA Jul 26, 16:30 UTCJul 26, 19:05 UTC2h 35m
2026-07-26 EJA391 CMH → BNA Jul 26, 13:15 UTCJul 26, 15:45 UTC2h 30m
2026-07-26 EJA391 CMH → BNA Jul 26, 11:25 UTCJul 26, 12:05 UTC40m
2026-07-24 EJA391 CMH → BNA Jul 24, 18:30 UTCJul 24, 20:15 UTC1h 45m
2026-07-24 EJA391 CMH → BNA Jul 24, 15:45 UTCJul 24, 16:55 UTC1h 10m
2026-07-24 EJA391 CMH → BNA Jul 24, 13:10 UTCJul 24, 14:15 UTC1h 5m
2026-07-23 EJA391 CMH → BNA Jul 23, 22:20 UTCJul 24, 00:15 UTC1h 55m
2026-07-23 EJA391 CMH → BNA Jul 23, 16:40 UTCJul 23, 19:55 UTC3h 15m
2026-07-22 EJA391 CMH → BNA Jul 22, 20:40 UTCJul 22, 21:40 UTC1h 0m
2026-07-22 EJA391 CMH → BNA Jul 22, 18:20 UTCJul 22, 19:05 UTC45m
2026-07-22 EJA391 CMH → BNA Jul 22, 16:15 UTCJul 22, 16:50 UTC35m
2026-07-22 EJA391 CMH → BNA Jul 22, 13:40 UTCJul 22, 14:45 UTC1h 5m
2026-07-22 EJA391 CMH → BNA Jul 22, 12:10 UTCJul 22, 12:50 UTC40m
2026-07-21 EJA391 CMH → BNA Jul 21, 21:15 UTCJul 21, 21:40 UTC25m
2026-07-21 EJA391 CMH → BNA Jul 21, 19:05 UTCJul 21, 19:45 UTC40m
2026-07-21 EJA391 CMH → BNA Jul 21, 16:10 UTCJul 21, 16:40 UTC30m
2026-07-21 EJA391 CMH → BNA Jul 21, 14:05 UTCJul 21, 15:00 UTC55m
2026-07-19 EJA391 CMH → BNA Jul 19, 19:20 UTCJul 19, 20:25 UTC1h 5m
2026-07-19 EJA391 CMH → BNA Jul 19, 17:35 UTCJul 19, 17:45 UTC10m
2026-07-19 EJA391 CMH → BNA Jul 19, 14:10 UTCJul 19, 16:00 UTC1h 50m
2026-07-18 EJA391 - Jul 18, 13:10 UTCJul 18, 15:10 UTC2h 0m
2026-07-17 EJA391 - Jul 17, 23:00 UTCJul 17, 23:55 UTC55m
2026-07-17 EJA391 - Jul 17, 19:35 UTCJul 17, 21:15 UTC1h 40m
2026-07-17 EJA391 - Jul 17, 17:15 UTCJul 17, 18:25 UTC1h 10m
2026-07-17 EJA391 - Jul 17, 13:29 UTCJul 17, 15:40 UTC2h 10m
2026-07-16 EJA391 SMD → PTK Jul 16, 22:30 UTCJul 16, 23:05 UTC35m
2026-07-16 EJA391 - Jul 16, 21:00 UTCJul 16, 21:30 UTC30m
2026-07-16 EJA391 - Jul 16, 17:14 UTCJul 16, 18:00 UTC45m
2026-07-16 EJA391 - Jul 16, 14:20 UTCJul 16, 15:10 UTC50m
2026-07-16 EJA391 - Jul 16, 12:14 UTCJul 16, 13:10 UTC55m
2026-07-15 EJA391 - Jul 15, 22:35 UTCJul 15, 23:30 UTC55m
2026-07-15 EJA391 - Jul 15, 20:35 UTCJul 15, 21:45 UTC1h 10m
2026-07-15 EJA391 MGW → SGF Jul 15, 17:55 UTCJul 15, 19:50 UTC1h 55m
2026-07-15 EJA391 - Jul 15, 15:25 UTCJul 15, 15:50 UTC25m
2026-07-14 EJA391 - Jul 14, 18:30 UTCJul 14, 19:15 UTC45m
2026-07-14 EJA391 - Jul 14, 15:35 UTCJul 14, 16:05 UTC30m
2026-07-14 EJA391 - Jul 14, 13:55 UTCJul 14, 14:35 UTC40m
2026-07-14 EJA391 - Jul 14, 11:00 UTCJul 14, 12:35 UTC1h 35m
2026-07-14 EJA391 - Jul 14, 09:15 UTCJul 14, 09:30 UTC15m
2026-07-13 EJA391 - Jul 13, 21:10 UTCJul 13, 23:00 UTC1h 50m
2026-07-13 EJA391 ROA → ISP Jul 13, 18:40 UTCJul 13, 19:50 UTC1h 10m
2026-07-13 EJA391 - Jul 13, 17:05 UTCJul 13, 17:50 UTC45m
2026-07-13 N391QS - Jul 13, 14:25 UTCJul 13, 16:20 UTC1h 55m
2026-07-12 N391QS - Jul 12, 20:10 UTCJul 13, 16:20 UTC20h 10m
2026-07-12 N391QS - Jul 12, 17:20 UTCJul 12, 17:40 UTC20m
2026-07-11 N391QS - Jul 11, 19:30 UTCJul 11, 20:05 UTC35m
2026-07-11 EJA391 - Jul 11, 15:15 UTCJul 11, 17:55 UTC2h 40m
2026-07-10 EJA391 - Jul 10, 15:50 UTCJul 10, 16:35 UTC45m
2026-07-09 N391QS - Jul 9, 21:35 UTCJul 10, 03:15 UTC5h 40m

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 N391QS page for operator, model, and routing details .

Mode-S A487EF frequently asked

What is Mode-S code A487EF?
A487EF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N391QS.
Where is Mode-S A487EF registered?
Mode-S code A487EF 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 A487EF broadcasting right now?
No active broadcast right now. Last signal was 26d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A487EF, octal 51103757, decimal 10,782,703.
What flights does A487EF operate?
Mode-S A487EF has broadcast 2 distinct callsigns, including EJA391, N391QS.