Apparatus

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sensors Mode-S transponder

AD19BC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N943QS · CESSNA 680 Citation Latitude · operated by 2024 TEXTRON HOLDINGS LLC, 74 AVIATION INC, ADEQUATE AVIATION HOLDINGS LLC, WEISS ANDREW, WEISS BONNIE, CINDYS GETAWAY LLC

Hex
AD19BC
Octal
53214674
Decimal
11,344,316
Country
US
Tail
N943QS
Type
C68A
Broadcasting now · callsign EJA943 · 2,500 ft
Flights observed
134
Distinct callsigns
2
Country
US
Last broadcast
39m ago

Current position

AD19BC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD19BC 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
EJA943 NetJets 129 2026-05-30
N943QS - 5 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 EJA943 SLC → VNY May 30, 14:25 UTCMay 30, 15:00 UTC35m
2026-05-30 EJA943 SLC → VNY May 30, 10:55 UTCMay 30, 13:15 UTC2h 20m
2026-05-29 EJA943 SLC → VNY May 29, 19:10 UTCMay 29, 19:35 UTC25m
2026-05-29 EJA943 SLC → VNY May 29, 16:25 UTCMay 29, 17:55 UTC1h 30m
2026-05-29 EJA943 SLC → VNY May 29, 12:20 UTCMay 29, 14:40 UTC2h 20m
2026-05-28 EJA943 SLC → VNY May 28, 18:40 UTCMay 28, 19:40 UTC1h 0m
2026-05-28 EJA943 SLC → VNY May 28, 15:40 UTCMay 28, 16:35 UTC55m
2026-05-26 EJA943 SLC → VNY May 26, 21:40 UTCMay 26, 22:39 UTC1h 0m
2026-05-26 EJA943 SLC → VNY May 26, 17:44 UTCMay 26, 18:40 UTC55m
2026-05-26 EJA943 SLC → VNY May 26, 13:45 UTCMay 26, 14:40 UTC55m
2026-05-25 EJA943 SLC → VNY May 25, 21:19 UTCMay 25, 22:10 UTC50m
2026-05-25 EJA943 SLC → VNY May 25, 16:55 UTCMay 25, 19:05 UTC2h 10m
2026-05-25 EJA943 SLC → VNY May 25, 15:35 UTCMay 25, 15:50 UTC15m
2026-05-24 EJA943 SLC → VNY May 24, 15:25 UTCMay 24, 17:20 UTC1h 55m
2026-05-24 EJA943 SLC → VNY May 24, 02:55 UTCMay 24, 03:20 UTC25m
2026-05-23 N943QS - May 23, 20:20 UTCMay 24, 02:15 UTC5h 55m
2026-05-23 EJA943 SLC → VNY May 23, 16:30 UTCMay 23, 17:15 UTC45m
2026-05-23 EJA943 SLC → VNY May 23, 00:30 UTCMay 23, 01:40 UTC1h 10m
2026-05-22 EJA943 SLC → VNY May 22, 22:20 UTCMay 22, 23:25 UTC1h 5m
2026-05-22 EJA943 SLC → VNY May 22, 17:25 UTCMay 22, 20:45 UTC3h 20m
2026-05-22 EJA943 SLC → VNY May 22, 14:50 UTCMay 22, 16:10 UTC1h 20m
2026-05-21 EJA943 SLC → VNY May 21, 22:50 UTCMay 22, 02:00 UTC3h 10m
2026-05-21 EJA943 SLC → VNY May 21, 20:20 UTCMay 21, 21:20 UTC1h 0m
2026-05-21 EJA943 SLC → VNY May 21, 14:30 UTCMay 21, 18:45 UTC4h 15m
2026-05-20 EJA943 SLC → VNY May 20, 22:25 UTCMay 21, 01:50 UTC3h 25m
2026-05-20 EJA943 SLC → VNY May 20, 17:45 UTCMay 20, 18:05 UTC20m
2026-05-20 EJA943 SLC → VNY May 20, 14:30 UTCMay 20, 17:05 UTC2h 35m
2026-05-19 EJA943 SLC → VNY May 19, 23:45 UTCMay 20, 00:15 UTC30m
2026-05-19 EJA943 SLC → VNY May 19, 20:45 UTCMay 19, 22:55 UTC2h 10m
2026-05-19 EJA943 SLC → VNY May 19, 19:45 UTCMay 19, 20:05 UTC20m
2026-05-19 EJA943 SLC → VNY May 19, 16:20 UTCMay 19, 16:55 UTC35m
2026-05-18 EJA943 SLC → VNY May 18, 22:30 UTCMay 18, 23:15 UTC45m
2026-05-18 EJA943 SLC → VNY May 18, 16:15 UTCMay 18, 19:15 UTC2h 59m
2026-05-17 EJA943 SLC → VNY May 17, 21:55 UTCMay 17, 22:35 UTC40m
2026-05-17 EJA943 SLC → VNY May 17, 19:30 UTCMay 17, 20:50 UTC1h 20m
2026-05-17 EJA943 SLC → VNY May 17, 15:45 UTCMay 17, 17:40 UTC1h 55m
2026-05-17 EJA943 SLC → VNY May 17, 13:50 UTCMay 17, 14:55 UTC1h 5m
2026-05-16 EJA943 SLC → VNY May 16, 17:40 UTCMay 16, 18:20 UTC40m
2026-05-16 EJA943 SLC → VNY May 16, 13:15 UTCMay 16, 13:41 UTC25m
2026-05-14 EJA943 SLC → VNY May 14, 20:05 UTCMay 14, 20:20 UTC15m
2026-05-14 EJA943 SLC → VNY May 14, 16:10 UTCMay 14, 18:55 UTC2h 45m
2026-05-13 EJA943 SLC → VNY May 13, 22:30 UTCMay 13, 23:15 UTC45m
2026-05-13 EJA943 SLC → VNY May 13, 20:25 UTCMay 13, 20:55 UTC30m
2026-05-13 EJA943 SLC → VNY May 13, 15:55 UTCMay 13, 18:00 UTC2h 5m
2026-05-13 EJA943 SLC → VNY May 13, 14:00 UTCMay 13, 14:45 UTC45m
2026-05-12 EJA943 SLC → VNY May 12, 23:01 UTCMay 12, 23:15 UTC15m
2026-05-12 EJA943 SLC → VNY May 12, 21:40 UTCMay 12, 22:20 UTC40m
2026-05-12 EJA943 SLC → VNY May 12, 16:10 UTCMay 12, 19:15 UTC3h 5m
2026-05-12 EJA943 SLC → VNY May 12, 12:20 UTCMay 12, 14:15 UTC1h 55m
2026-05-11 EJA943 SLC → VNY May 11, 18:00 UTCMay 11, 19:25 UTC1h 25m

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 N943QS page for operator, model, and routing details .

Mode-S AD19BC frequently asked

What is Mode-S code AD19BC?
AD19BC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N943QS.
Where is Mode-S AD19BC registered?
Mode-S code AD19BC 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 AD19BC broadcasting right now?
Yes. Mode-S AD19BC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD19BC, octal 53214674, decimal 11,344,316.
What flights does AD19BC operate?
Mode-S AD19BC has broadcast 2 distinct callsigns, including EJA943, N943QS.