Apparatus

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sensors Mode-S transponder

A84A50

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N633QS · CESSNA 680 Citation Latitude · operated by NETJETS SALES INC, ACE AVIATION I LLC, AIRGO LLC, AREA 15 VENTURES LLC, BALLARD PARTNERS INC, DATUM 9 CAPITAL LLC

Hex
A84A50
Octal
52045120
Decimal
11,029,072
Country
US
Tail
N633QS
Type
C68A
No current signal · last broadcast 10h ago
Flights observed
87
Distinct callsigns
2
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S A84A50.

Country allocation

The ICAO 24-bit address A84A50 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
EJA633 NetJets 72 2026-05-29
N633QS - 15 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA633 LAS → SJC May 29, 22:25 UTCMay 30, 00:20 UTC1h 55m
2026-05-29 EJA633 LAS → SJC May 29, 20:15 UTCMay 29, 21:30 UTC1h 15m
2026-05-29 EJA633 LAS → SJC May 29, 18:25 UTCMay 29, 18:40 UTC15m
2026-05-29 EJA633 LAS → SJC May 29, 16:05 UTCMay 29, 17:20 UTC1h 15m
2026-05-28 EJA633 LAS → SJC May 28, 22:20 UTCMay 28, 23:25 UTC1h 5m
2026-05-28 EJA633 LAS → SJC May 28, 19:15 UTCMay 28, 21:35 UTC2h 20m
2026-05-28 EJA633 LAS → SJC May 28, 17:10 UTCMay 28, 17:30 UTC20m
2026-05-28 EJA633 LAS → SJC May 28, 13:55 UTCMay 28, 16:10 UTC2h 15m
2026-05-27 EJA633 LAS → SJC May 27, 22:35 UTCMay 27, 23:20 UTC45m
2026-05-27 EJA633 LAS → SJC May 27, 20:20 UTCMay 27, 22:00 UTC1h 40m
2026-05-27 EJA633 LAS → SJC May 27, 18:00 UTCMay 27, 18:50 UTC50m
2026-05-27 EJA633 LAS → SJC May 27, 12:40 UTCMay 27, 15:15 UTC2h 35m
2026-05-26 EJA633 LAS → SJC May 26, 17:44 UTCMay 26, 19:40 UTC1h 55m
2026-05-26 EJA633 LAS → SJC May 26, 15:54 UTCMay 26, 16:10 UTC15m
2026-05-25 EJA633 LAS → SJC May 25, 19:35 UTCMay 25, 21:40 UTC2h 5m
2026-05-25 N633QS - May 25, 15:55 UTCMay 25, 18:30 UTC2h 35m
2026-05-24 N633QS - May 24, 18:30 UTCMay 24, 18:50 UTC20m
2026-05-24 N633QS - May 24, 14:20 UTCMay 24, 14:45 UTC25m
2026-05-23 EJA633 LAS → SJC May 23, 19:35 UTCMay 23, 22:15 UTC2h 40m
2026-05-23 EJA633 LAS → SJC May 23, 16:45 UTCMay 23, 17:05 UTC20m
2026-05-22 N633QS - May 22, 20:25 UTCMay 22, 22:35 UTC2h 10m
2026-05-22 N633QS - May 22, 16:15 UTCMay 22, 16:45 UTC30m
2026-05-22 EJA633 LAS → SJC May 22, 12:00 UTCMay 22, 12:45 UTC45m
2026-05-21 EJA633 LAS → SJC May 21, 17:15 UTCMay 21, 22:10 UTC4h 55m
2026-05-21 EJA633 LAS → SJC May 21, 13:45 UTCMay 21, 15:20 UTC1h 35m
2026-05-20 EJA633 LAS → SJC May 20, 22:50 UTCMay 21, 00:10 UTC1h 20m
2026-05-20 EJA633 LAS → SJC May 20, 19:50 UTCMay 20, 20:30 UTC40m
2026-05-20 EJA633 LAS → SJC May 20, 17:10 UTCMay 20, 17:35 UTC25m
2026-05-20 EJA633 LAS → SJC May 20, 13:45 UTCMay 20, 16:30 UTC2h 45m
2026-05-20 EJA633 LAS → SJC May 20, 10:15 UTCMay 20, 12:45 UTC2h 30m
2026-05-18 EJA633 LAS → SJC May 18, 15:15 UTCMay 18, 18:45 UTC3h 29m
2026-05-18 EJA633 LAS → SJC May 18, 13:00 UTCMay 18, 13:55 UTC55m
2026-05-17 EJA633 LAS → SJC May 17, 21:50 UTCMay 18, 00:05 UTC2h 15m
2026-05-17 EJA633 LAS → SJC May 17, 17:01 UTCMay 17, 19:50 UTC2h 50m
2026-05-17 EJA633 LAS → SJC May 17, 14:01 UTCMay 17, 15:31 UTC1h 30m
2026-05-16 EJA633 LAS → SJC May 16, 22:10 UTCMay 16, 23:00 UTC50m
2026-05-16 EJA633 LAS → SJC May 16, 19:20 UTCMay 16, 20:45 UTC1h 25m
2026-05-16 EJA633 LAS → SJC May 16, 17:45 UTCMay 16, 18:35 UTC50m
2026-05-16 EJA633 LAS → SJC May 16, 03:40 UTCMay 16, 04:05 UTC25m
2026-05-16 EJA633 LAS → SJC May 16, 00:15 UTCMay 16, 02:05 UTC1h 50m
2026-05-15 EJA633 LAS → SJC May 15, 21:20 UTCMay 15, 22:25 UTC1h 5m
2026-05-14 EJA633 LAS → SJC May 14, 21:40 UTCMay 15, 00:20 UTC2h 40m
2026-05-14 N633QS - May 14, 18:05 UTCMay 14, 18:45 UTC40m
2026-05-05 N633QS - May 5, 21:10 UTCMay 5, 23:10 UTC2h 0m
2026-05-05 EJA633 LAS → SJC May 5, 17:55 UTCMay 5, 19:20 UTC1h 25m
2026-05-05 EJA633 LAS → SJC May 5, 14:15 UTCMay 5, 16:06 UTC1h 50m
2026-05-04 EJA633 LAS → SJC May 4, 21:00 UTCMay 4, 21:35 UTC35m
2026-05-04 EJA633 LAS → SJC May 4, 17:00 UTCMay 4, 17:45 UTC45m
2026-05-04 EJA633 LAS → SJC May 4, 14:35 UTCMay 4, 15:25 UTC50m
2026-05-04 EJA633 LAS → SJC May 4, 11:50 UTCMay 4, 13:25 UTC1h 35m

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 N633QS page for operator, model, and routing details .

Mode-S A84A50 frequently asked

What is Mode-S code A84A50?
A84A50 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N633QS.
Where is Mode-S A84A50 registered?
Mode-S code A84A50 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 A84A50 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84A50, octal 52045120, decimal 11,029,072.
What flights does A84A50 operate?
Mode-S A84A50 has broadcast 2 distinct callsigns, including EJA633, N633QS.