Apparatus

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sensors Mode-S transponder

AAB974

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N790QS · BOMBARDIER BD-100 Challenger 350 · operated by NETJETS SALES INC, ECLINICALWORKS LLC, LEE ELIZABETH, BGKSW AIRCRAFT LLC, TARRANT NJ LLC

Hex
AAB974
Octal
52534564
Decimal
11,188,596
Country
US
Tail
N790QS
Type
CL35
No current signal · last broadcast 1d ago
Flights observed
117
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AAB974.

Country allocation

The ICAO 24-bit address AAB974 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
EJA790 NetJets 112 2026-05-28
N790QS - 5 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 EJA790 YYC → YLL May 28, 11:35 UTCMay 28, 13:10 UTC1h 35m
2026-05-27 EJA790 YYC → YLL May 27, 21:00 UTCMay 27, 22:35 UTC1h 35m
2026-05-27 EJA790 YYC → YLL May 27, 19:15 UTCMay 27, 19:45 UTC30m
2026-05-27 EJA790 YYC → YLL May 27, 16:10 UTCMay 27, 18:20 UTC2h 10m
2026-05-27 EJA790 YYC → YLL May 27, 12:40 UTCMay 27, 14:45 UTC2h 5m
2026-05-26 N790QS - May 26, 16:50 UTCMay 26, 17:25 UTC35m
2026-05-25 N790QS - May 25, 20:59 UTCMay 25, 21:15 UTC15m
2026-05-25 N790QS - May 25, 16:40 UTCMay 25, 19:50 UTC3h 10m
2026-05-24 EJA790 YYC → YLL May 24, 20:25 UTCMay 24, 20:45 UTC20m
2026-05-24 EJA790 YYC → YLL May 24, 15:40 UTCMay 24, 16:15 UTC35m
2026-05-23 EJA790 YYC → YLL May 23, 19:00 UTCMay 23, 19:10 UTC10m
2026-05-23 EJA790 YYC → YLL May 23, 16:35 UTCMay 23, 17:40 UTC1h 5m
2026-05-23 EJA790 YYC → YLL May 23, 13:25 UTCMay 23, 15:45 UTC2h 20m
2026-05-23 EJA790 YYC → YLL May 23, 11:50 UTCMay 23, 12:05 UTC15m
2026-05-22 EJA790 YYC → YLL May 22, 16:15 UTCMay 22, 17:25 UTC1h 10m
2026-05-22 EJA790 YYC → YLL May 22, 15:05 UTCMay 22, 15:30 UTC25m
2026-05-20 EJA790 YYC → YLL May 20, 22:10 UTCMay 21, 01:50 UTC3h 40m
2026-05-20 EJA790 YYC → YLL May 20, 15:40 UTCMay 20, 17:40 UTC2h 0m
2026-05-19 EJA790 YYC → YLL May 19, 22:00 UTCMay 20, 01:35 UTC3h 35m
2026-05-19 EJA790 YYC → YLL May 19, 17:15 UTCMay 19, 18:45 UTC1h 30m
2026-05-19 EJA790 YYC → YLL May 19, 15:45 UTCMay 19, 16:30 UTC45m
2026-05-18 EJA790 YYC → YLL May 18, 18:20 UTCMay 18, 20:50 UTC2h 29m
2026-05-17 EJA790 YYC → YLL May 17, 00:25 UTCMay 17, 00:40 UTC15m
2026-05-15 EJA790 YYC → YLL May 15, 22:30 UTCMay 15, 23:35 UTC1h 5m
2026-05-15 EJA790 YYC → YLL May 15, 19:15 UTCMay 15, 19:35 UTC20m
2026-05-15 EJA790 YYC → YLL May 15, 12:10 UTCMay 15, 18:05 UTC5h 54m
2026-05-14 EJA790 YYC → YLL May 14, 20:10 UTCMay 14, 21:45 UTC1h 35m
2026-05-14 EJA790 YYC → YLL May 14, 18:05 UTCMay 14, 19:20 UTC1h 15m
2026-05-14 EJA790 YYC → YLL May 14, 14:25 UTCMay 14, 16:45 UTC2h 20m
2026-05-14 EJA790 YYC → YLL May 14, 12:15 UTCMay 14, 12:50 UTC35m
2026-05-13 EJA790 YYC → YLL May 13, 22:20 UTCMay 13, 22:55 UTC35m
2026-05-13 EJA790 YYC → YLL May 13, 13:05 UTCMay 13, 15:55 UTC2h 50m
2026-05-13 EJA790 YYC → YLL May 13, 11:20 UTCMay 13, 12:00 UTC40m
2026-05-12 N790QS - May 12, 11:05 UTCMay 12, 18:45 UTC7h 40m
2026-05-12 EJA790 YYC → YLL May 12, 09:25 UTCMay 12, 10:20 UTC55m
2026-05-11 EJA790 YYC → YLL May 11, 18:55 UTCMay 11, 21:00 UTC2h 5m
2026-05-11 EJA790 YYC → YLL May 11, 15:40 UTCMay 11, 18:05 UTC2h 26m
2026-05-11 EJA790 YYC → YLL May 11, 11:45 UTCMay 11, 13:05 UTC1h 20m
2026-05-10 EJA790 YYC → YLL May 10, 22:25 UTCMay 10, 23:05 UTC40m
2026-05-10 EJA790 YYC → YLL May 10, 15:35 UTCMay 10, 16:25 UTC50m
2026-05-10 EJA790 YYC → YLL May 10, 14:00 UTCMay 10, 14:30 UTC30m
2026-05-09 EJA790 YYC → YLL May 9, 21:25 UTCMay 9, 22:55 UTC1h 30m
2026-05-09 EJA790 YYC → YLL May 9, 18:05 UTCMay 9, 18:35 UTC30m
2026-05-09 EJA790 YYC → YLL May 9, 13:15 UTCMay 9, 16:55 UTC3h 40m
2026-05-07 EJA790 YYC → YLL May 7, 21:25 UTCMay 7, 22:40 UTC1h 15m
2026-05-07 EJA790 YYC → YLL May 7, 18:55 UTCMay 7, 20:00 UTC1h 5m
2026-05-07 EJA790 YYC → YLL May 7, 15:25 UTCMay 7, 16:05 UTC40m
2026-05-07 EJA790 YYC → YLL May 7, 13:40 UTCMay 7, 14:05 UTC25m
2026-05-07 EJA790 YYC → YLL May 7, 12:15 UTCMay 7, 12:50 UTC35m
2026-05-06 EJA790 YYC → YLL May 6, 20:50 UTCMay 6, 21:50 UTC1h 0m

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 N790QS page for operator, model, and routing details .

Mode-S AAB974 frequently asked

What is Mode-S code AAB974?
AAB974 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N790QS.
Where is Mode-S AAB974 registered?
Mode-S code AAB974 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 AAB974 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 AAB974, octal 52534564, decimal 11,188,596.
What flights does AAB974 operate?
Mode-S AAB974 has broadcast 2 distinct callsigns, including EJA790, N790QS.