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sensors Mode-S transponder

AC1934

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N879QS · operated by ALAN JAY AUTOMOTIVE MANAGEMENT INC, GOLDBERG EVAN TRUSTEE, GOLDBERG CYNTHIA TRUSTEE, ISLAND VENTURES INC, SHERMAN JOHN J, COMOLLI KEVIN EARLE TRUSTEE

Hex
AC1934
Octal
53014464
Decimal
11,278,644
Country
US
Tail
N879QS
Type
C700
No current signal · last broadcast 1d ago
Flights observed
119
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC1934.

Country allocation

The ICAO 24-bit address AC1934 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
EJA879 NetJets 109 2026-05-28
N879QS - 10 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 EJA879 HOU → TEB May 28, 21:20 UTCMay 28, 23:10 UTC1h 50m
2026-05-28 EJA879 HOU → TEB May 28, 18:40 UTCMay 28, 19:30 UTC50m
2026-05-27 N879QS - May 27, 16:05 UTCMay 28, 00:50 UTC8h 45m
2026-05-27 EJA879 HOU → TEB May 27, 13:55 UTCMay 27, 14:35 UTC40m
2026-05-26 EJA879 HOU → TEB May 26, 20:24 UTCMay 26, 21:40 UTC1h 15m
2026-05-26 EJA879 HOU → TEB May 26, 16:00 UTCMay 26, 17:44 UTC1h 45m
2026-05-26 EJA879 HOU → TEB May 26, 12:35 UTCMay 26, 13:54 UTC1h 20m
2026-05-25 EJA879 HOU → TEB May 25, 19:05 UTCMay 25, 23:35 UTC4h 30m
2026-05-25 EJA879 HOU → TEB May 25, 11:40 UTCMay 25, 16:55 UTC5h 15m
2026-05-24 EJA879 HOU → TEB May 24, 12:40 UTCMay 24, 13:50 UTC1h 10m
2026-05-23 EJA879 HOU → TEB May 23, 13:00 UTCMay 23, 17:15 UTC4h 15m
2026-05-23 N879QS - May 23, 05:10 UTCMay 23, 05:55 UTC45m
2026-05-23 N879QS - May 23, 01:00 UTCMay 23, 01:10 UTC10m
2026-05-22 N879QS - May 22, 02:05 UTCMay 22, 02:35 UTC30m
2026-05-21 N879QS - May 21, 21:25 UTCMay 21, 22:00 UTC35m
2026-05-20 EJA879 HOU → TEB May 20, 20:50 UTCMay 20, 21:40 UTC50m
2026-05-20 EJA879 HOU → TEB May 20, 18:50 UTCMay 20, 19:50 UTC1h 0m
2026-05-20 EJA879 HOU → TEB May 20, 16:05 UTCMay 20, 16:40 UTC35m
2026-05-20 EJA879 HOU → TEB May 20, 11:55 UTCMay 20, 14:30 UTC2h 35m
2026-05-19 EJA879 HOU → TEB May 19, 18:25 UTCMay 19, 21:00 UTC2h 35m
2026-05-19 EJA879 HOU → TEB May 19, 15:20 UTCMay 19, 17:20 UTC2h 0m
2026-05-18 EJA879 HOU → TEB May 18, 15:55 UTCMay 18, 21:20 UTC5h 24m
2026-05-18 EJA879 HOU → TEB May 18, 12:00 UTCMay 18, 13:05 UTC1h 5m
2026-05-17 EJA879 HOU → TEB May 17, 23:45 UTCMay 18, 00:10 UTC25m
2026-05-17 EJA879 HOU → TEB May 17, 22:01 UTCMay 17, 22:55 UTC55m
2026-05-17 EJA879 HOU → TEB May 17, 19:35 UTCMay 17, 21:15 UTC1h 40m
2026-05-17 EJA879 HOU → TEB May 17, 17:55 UTCMay 17, 18:35 UTC40m
2026-05-17 EJA879 HOU → TEB May 17, 16:10 UTCMay 17, 16:45 UTC35m
2026-05-16 EJA879 HOU → TEB May 16, 23:40 UTCMay 17, 00:30 UTC50m
2026-05-16 EJA879 HOU → TEB May 16, 17:40 UTCMay 16, 18:25 UTC45m
2026-05-16 EJA879 HOU → TEB May 16, 15:35 UTCMay 16, 16:15 UTC40m
2026-05-15 EJA879 HOU → TEB May 15, 15:35 UTCMay 15, 17:10 UTC1h 35m
2026-05-15 EJA879 HOU → TEB May 15, 13:50 UTCMay 15, 14:45 UTC55m
2026-05-14 EJA879 HOU → TEB May 14, 22:20 UTCMay 14, 22:45 UTC25m
2026-05-14 EJA879 HOU → TEB May 14, 17:55 UTCMay 14, 21:30 UTC3h 35m
2026-05-13 EJA879 HOU → TEB May 13, 19:30 UTCMay 13, 21:05 UTC1h 35m
2026-05-13 EJA879 HOU → TEB May 13, 16:10 UTCMay 13, 18:35 UTC2h 25m
2026-05-12 EJA879 HOU → TEB May 12, 18:40 UTCMay 12, 23:25 UTC4h 45m
2026-05-11 EJA879 HOU → TEB May 11, 15:40 UTCMay 11, 18:15 UTC2h 36m
2026-05-11 EJA879 HOU → TEB May 11, 13:45 UTCMay 11, 14:45 UTC1h 0m
2026-05-10 EJA879 HOU → TEB May 10, 03:40 UTCMay 10, 04:29 UTC50m
2026-05-08 EJA879 HOU → TEB May 8, 23:35 UTCMay 9, 04:30 UTC4h 55m
2026-05-08 EJA879 HOU → TEB May 8, 16:35 UTCMay 8, 21:50 UTC5h 15m
2026-05-07 EJA879 HOU → TEB May 7, 21:15 UTCMay 7, 22:30 UTC1h 15m
2026-05-07 EJA879 HOU → TEB May 7, 19:35 UTCMay 7, 20:25 UTC50m
2026-05-07 EJA879 HOU → TEB May 7, 15:30 UTCMay 7, 16:25 UTC55m
2026-05-07 EJA879 HOU → TEB May 7, 01:30 UTCMay 7, 01:45 UTC15m
2026-05-06 EJA879 HOU → TEB May 6, 23:25 UTCMay 7, 01:00 UTC1h 35m
2026-05-06 EJA879 HOU → TEB May 6, 21:55 UTCMay 6, 22:15 UTC20m
2026-05-06 EJA879 HOU → TEB May 6, 18:35 UTCMay 6, 20:45 UTC2h 10m

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 N879QS page for operator, model, and routing details .

Mode-S AC1934 frequently asked

What is Mode-S code AC1934?
AC1934 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N879QS.
Where is Mode-S AC1934 registered?
Mode-S code AC1934 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 AC1934 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 AC1934, octal 53014464, decimal 11,278,644.
What flights does AC1934 operate?
Mode-S AC1934 has broadcast 2 distinct callsigns, including EJA879, N879QS.