Apparatus

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sensors Mode-S transponder

A87CF4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N646QS · CESSNA 680 Citation Latitude · operated by NETJETS SALES INC, ENTROTECH INC, ITC-SW CAPITAL LLC, MARAIR LLC, METAPEER INC, PINEHILL NJ INVESTMENTS LLC

Hex
A87CF4
Octal
52076364
Decimal
11,042,036
Country
US
Tail
N646QS
Type
C68A
No current signal · last broadcast Jul 26, 19:15 UTC
Flights observed
264
Distinct callsigns
2
Country
US
Last broadcast
Jul 26, 19:15 UTC

Last known position

Most recent position reported by Mode-S A87CF4.

Country allocation

The ICAO 24-bit address A87CF4 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
EJA646 NetJets 247 2026-07-26
N646QS - 17 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EJA646 COD → FCM Jul 26, 18:40 UTCJul 26, 19:15 UTC35m
2026-07-26 EJA646 COD → FCM Jul 26, 17:20 UTCJul 26, 18:00 UTC40m
2026-07-23 EJA646 COD → FCM Jul 23, 19:45 UTCJul 23, 20:35 UTC50m
2026-07-23 EJA646 COD → FCM Jul 23, 18:35 UTCJul 23, 19:00 UTC25m
2026-07-23 EJA646 COD → FCM Jul 23, 17:05 UTCJul 23, 17:45 UTC40m
2026-07-23 EJA646 COD → FCM Jul 23, 14:05 UTCJul 23, 15:10 UTC1h 5m
2026-07-23 EJA646 COD → FCM Jul 23, 12:25 UTCJul 23, 12:55 UTC30m
2026-07-17 EJA646 - Jul 17, 23:30 UTCJul 18, 00:55 UTC1h 25m
2026-07-17 EJA646 - Jul 17, 21:50 UTCJul 17, 22:29 UTC40m
2026-07-17 EJA646 - Jul 17, 19:20 UTCJul 17, 19:55 UTC35m
2026-07-17 EJA646 - Jul 17, 16:55 UTCJul 17, 17:40 UTC45m
2026-07-17 EJA646 - Jul 17, 12:00 UTCJul 17, 14:50 UTC2h 50m
2026-07-17 EJA646 - Jul 17, 10:50 UTCJul 17, 11:00 UTC10m
2026-07-17 EJA646 - Jul 17, 02:59 UTCJul 17, 04:35 UTC1h 35m
2026-07-17 EJA646 - Jul 17, 00:30 UTCJul 17, 01:05 UTC35m
2026-07-16 EJA646 - Jul 16, 21:05 UTCJul 16, 22:15 UTC1h 10m
2026-07-16 EJA646 - Jul 16, 18:29 UTCJul 16, 20:09 UTC1h 40m
2026-07-16 EJA646 - Jul 16, 14:20 UTCJul 16, 16:55 UTC2h 35m
2026-07-15 EJA646 - Jul 15, 19:50 UTCJul 15, 22:50 UTC3h 0m
2026-07-15 EJA646 - Jul 15, 18:45 UTCJul 15, 19:05 UTC20m
2026-07-15 EJA646 - Jul 15, 14:15 UTCJul 15, 16:35 UTC2h 20m
2026-07-15 EJA646 - Jul 15, 12:05 UTCJul 15, 12:25 UTC20m
2026-07-15 EJA646 DAL → TEB Jul 15, 02:35 UTCJul 15, 05:50 UTC3h 15m
2026-07-14 EJA646 SLC → DAL Jul 14, 22:05 UTCJul 15, 00:30 UTC2h 24m
2026-07-13 EJA646 - Jul 13, 23:30 UTCJul 14, 02:20 UTC2h 50m
2026-07-13 EJA646 TEB → MSN Jul 13, 16:10 UTCJul 13, 18:00 UTC1h 50m
2026-07-13 EJA646 LGA → TEB Jul 13, 14:05 UTCJul 13, 14:20 UTC15m
2026-07-13 EJA646 - Jul 13, 12:25 UTCJul 13, 13:10 UTC45m
2026-07-12 EJA646 - Jul 12, 22:45 UTCJul 12, 23:10 UTC25m
2026-07-12 EJA646 - Jul 12, 21:00 UTCJul 12, 21:25 UTC25m
2026-07-12 EJA646 - Jul 12, 18:01 UTCJul 12, 18:50 UTC50m
2026-07-12 EJA646 - Jul 12, 14:50 UTCJul 12, 16:35 UTC1h 45m
2026-07-12 EJA646 - Jul 12, 12:10 UTCJul 12, 12:35 UTC25m
2026-07-11 EJA646 - Jul 11, 19:40 UTCJul 11, 20:45 UTC1h 5m
2026-07-11 EJA646 - Jul 11, 17:15 UTCJul 11, 18:45 UTC1h 30m
2026-07-11 EJA646 - Jul 11, 13:20 UTCJul 11, 14:45 UTC1h 25m
2026-07-09 EJA646 - Jul 9, 18:40 UTCJul 9, 21:10 UTC2h 30m
2026-07-09 EJA646 - Jul 9, 13:00 UTCJul 9, 15:20 UTC2h 20m
2026-07-09 EJA646 - Jul 9, 00:25 UTCJul 9, 01:00 UTC35m
2026-07-08 EJA646 - Jul 8, 16:10 UTCJul 8, 19:30 UTC3h 20m
2026-07-08 EJA646 - Jul 8, 14:40 UTCJul 8, 14:55 UTC15m
2026-07-07 EJA646 - Jul 7, 20:15 UTCJul 8, 01:25 UTC5h 10m
2026-07-07 EJA646 - Jul 7, 17:25 UTCJul 7, 19:25 UTC2h 0m
2026-07-06 EJA646 - Jul 6, 19:10 UTCJul 7, 00:50 UTC5h 40m
2026-07-06 EJA646 - Jul 6, 18:15 UTCJul 6, 18:35 UTC20m
2026-07-06 EJA646 - Jul 6, 01:10 UTCJul 6, 03:55 UTC2h 45m
2026-07-05 EJA646 - Jul 5, 23:10 UTCJul 5, 23:20 UTC10m
2026-07-05 EJA646 - Jul 5, 21:45 UTCJul 5, 22:00 UTC15m
2026-07-05 EJA646 FCM → APA Jul 5, 19:20 UTCJul 5, 21:05 UTC1h 45m
2026-07-04 EJA646 - Jul 4, 18:55 UTCJul 4, 20:10 UTC1h 15m

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 N646QS page for operator, model, and routing details .

Mode-S A87CF4 frequently asked

What is Mode-S code A87CF4?
A87CF4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N646QS.
Where is Mode-S A87CF4 registered?
Mode-S code A87CF4 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 A87CF4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A87CF4, octal 52076364, decimal 11,042,036.
What flights does A87CF4 operate?
Mode-S A87CF4 has broadcast 2 distinct callsigns, including EJA646, N646QS.