Apparatus

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sensors Mode-S transponder

AAD72C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N798QS · BOMBARDIER BD-100 Challenger 350 · operated by NETJETS SALES INC, CANTON TRANSPORTATION LLC, SCPDEF LLC, SANDERS WALTER JEREMIAH III

Hex
AAD72C
Octal
52553454
Decimal
11,196,204
Country
US
Tail
N798QS
Type
CL35
No current signal · last broadcast 1d ago
Flights observed
79
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AAD72C.

Country allocation

The ICAO 24-bit address AAD72C 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
EJA798 NetJets 76 2026-06-01
N798QS - 3 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 EJA798 SJC → HPN Jun 1, 19:50 UTCJun 1, 21:55 UTC2h 5m
2026-06-01 EJA798 SJC → HPN Jun 1, 16:50 UTCJun 1, 17:20 UTC30m
2026-06-01 EJA798 SJC → HPN Jun 1, 12:20 UTCJun 1, 15:05 UTC2h 45m
2026-05-31 EJA798 SJC → HPN May 31, 21:05 UTCMay 31, 22:20 UTC1h 15m
2026-05-31 EJA798 SJC → HPN May 31, 19:10 UTCMay 31, 20:15 UTC1h 5m
2026-05-31 EJA798 SJC → HPN May 31, 16:55 UTCMay 31, 17:50 UTC55m
2026-05-31 EJA798 SJC → HPN May 31, 13:55 UTCMay 31, 15:40 UTC1h 45m
2026-05-30 EJA798 SJC → HPN May 30, 21:35 UTCMay 30, 23:05 UTC1h 30m
2026-05-30 EJA798 SJC → HPN May 30, 18:45 UTCMay 30, 20:30 UTC1h 45m
2026-05-30 EJA798 SJC → HPN May 30, 16:40 UTCMay 30, 18:20 UTC1h 40m
2026-05-30 EJA798 SJC → HPN May 30, 13:30 UTCMay 30, 13:55 UTC25m
2026-05-29 EJA798 SJC → HPN May 29, 18:30 UTCMay 29, 20:40 UTC2h 10m
2026-05-29 EJA798 SJC → HPN May 29, 14:40 UTCMay 29, 17:20 UTC2h 41m
2026-05-29 EJA798 SJC → HPN May 29, 11:40 UTCMay 29, 12:20 UTC40m
2026-05-20 EJA798 SJC → HPN May 20, 17:30 UTCMay 20, 18:15 UTC45m
2026-05-20 EJA798 SJC → HPN May 20, 14:40 UTCMay 20, 15:20 UTC40m
2026-05-20 EJA798 SJC → HPN May 20, 00:55 UTCMay 20, 03:00 UTC2h 5m
2026-05-19 EJA798 SJC → HPN May 19, 20:05 UTCMay 19, 21:20 UTC1h 15m
2026-05-19 EJA798 SJC → HPN May 19, 18:15 UTCMay 19, 18:45 UTC30m
2026-05-19 EJA798 SJC → HPN May 19, 00:35 UTCMay 19, 00:50 UTC15m
2026-05-15 EJA798 SJC → HPN May 15, 13:20 UTCMay 15, 14:50 UTC1h 29m
2026-05-11 N798QS BFI → BFI May 11, 13:15 UTCMay 11, 16:45 UTC3h 30m
2026-05-10 EJA798 SJC → HPN May 10, 16:14 UTCMay 10, 20:25 UTC4h 10m
2026-05-09 EJA798 SJC → HPN May 9, 19:14 UTCMay 9, 20:44 UTC1h 30m
2026-05-08 EJA798 SJC → HPN May 8, 21:05 UTCMay 8, 21:20 UTC15m
2026-05-08 EJA798 SJC → HPN May 8, 17:15 UTCMay 8, 19:55 UTC2h 40m
2026-05-07 EJA798 SJC → HPN May 7, 18:50 UTCMay 7, 21:50 UTC3h 0m
2026-05-06 EJA798 SJC → HPN May 6, 19:25 UTCMay 6, 22:05 UTC2h 40m
2026-05-06 EJA798 SJC → HPN May 6, 14:50 UTCMay 6, 16:55 UTC2h 5m
2026-05-05 EJA798 SJC → HPN May 5, 22:50 UTCMay 5, 23:45 UTC55m
2026-05-05 EJA798 SJC → HPN May 5, 21:20 UTCMay 5, 22:05 UTC45m
2026-05-05 EJA798 SJC → HPN May 5, 19:30 UTCMay 5, 20:05 UTC35m
2026-05-05 EJA798 SJC → HPN May 5, 16:45 UTCMay 5, 17:30 UTC45m
2026-05-05 EJA798 SJC → HPN May 5, 14:55 UTCMay 5, 15:01 UTC5m
2026-05-05 EJA798 SJC → HPN May 5, 13:05 UTCMay 5, 13:55 UTC50m
2026-05-04 EJA798 SJC → HPN May 4, 19:00 UTCMay 4, 22:10 UTC3h 10m
2026-05-04 EJA798 SJC → HPN May 4, 14:10 UTCMay 4, 16:40 UTC2h 30m
2026-05-03 EJA798 SJC → HPN May 3, 22:20 UTCMay 4, 01:05 UTC2h 45m
2026-05-03 EJA798 SJC → HPN May 3, 13:10 UTCMay 3, 18:05 UTC4h 55m
2026-05-02 EJA798 SJC → HPN May 2, 18:00 UTCMay 2, 19:45 UTC1h 45m
2026-05-02 EJA798 SJC → HPN May 2, 16:40 UTCMay 2, 17:00 UTC20m
2026-05-01 EJA798 SJC → HPN May 1, 15:40 UTCMay 1, 16:45 UTC1h 5m
2026-04-30 EJA798 SJC → HPN Apr 30, 22:10 UTCMay 1, 02:25 UTC4h 15m
2026-04-30 EJA798 SJC → HPN Apr 30, 19:10 UTCApr 30, 19:20 UTC10m
2026-04-30 EJA798 SJC → HPN Apr 30, 17:00 UTCApr 30, 18:54 UTC1h 54m
2026-04-30 EJA798 SJC → HPN Apr 30, 16:10 UTCApr 30, 16:40 UTC30m
2026-04-30 EJA798 SJC → HPN Apr 30, 14:20 UTCApr 30, 14:40 UTC20m
2026-04-29 EJA798 SJC → HPN Apr 29, 21:40 UTCApr 29, 22:55 UTC1h 15m
2026-04-29 EJA798 SJC → HPN Apr 29, 19:15 UTCApr 29, 19:45 UTC30m
2026-04-29 EJA798 SJC → HPN Apr 29, 18:00 UTCApr 29, 18:20 UTC20m

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 N798QS page for operator, model, and routing details .

Mode-S AAD72C frequently asked

What is Mode-S code AAD72C?
AAD72C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N798QS.
Where is Mode-S AAD72C registered?
Mode-S code AAD72C 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 AAD72C broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAD72C, octal 52553454, decimal 11,196,204.
What flights does AAD72C operate?
Mode-S AAD72C has broadcast 2 distinct callsigns, including EJA798, N798QS.