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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 10h ago
Flights observed
215
Distinct callsigns
2
Country
US
Last broadcast
10h 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 - 205 2026-07-13
N879QS - 10 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 EJA879 - Jul 13, 16:55 UTCJul 13, 22:15 UTC5h 20m
2026-07-13 EJA879 - Jul 13, 15:05 UTCJul 13, 15:35 UTC30m
2026-07-13 EJA879 SJC → BUR Jul 13, 13:10 UTCJul 13, 14:00 UTC50m
2026-07-09 EJA879 PHX → SJC Jul 9, 23:05 UTCJul 10, 00:30 UTC1h 25m
2026-07-09 EJA879 - Jul 9, 18:50 UTCJul 9, 21:05 UTC2h 15m
2026-07-09 EJA879 - Jul 9, 15:00 UTCJul 9, 17:10 UTC2h 10m
2026-07-08 EJA879 - Jul 8, 00:35 UTCJul 8, 05:10 UTC4h 35m
2026-07-07 EJA879 - Jul 7, 23:00 UTCJul 7, 23:25 UTC25m
2026-07-02 EJA879 - Jul 2, 18:20 UTCJul 2, 19:30 UTC1h 10m
2026-07-02 EJA879 - Jul 2, 15:55 UTCJul 2, 17:25 UTC1h 30m
2026-07-02 EJA879 OCE → IAD Jul 2, 13:35 UTCJul 2, 14:15 UTC40m
2026-07-02 EJA879 - Jul 2, 12:00 UTCJul 2, 12:35 UTC35m
2026-07-01 EJA879 - Jul 1, 18:25 UTCJul 1, 23:05 UTC4h 40m
2026-07-01 EJA879 - Jul 1, 15:50 UTCJul 1, 17:25 UTC1h 35m
2026-07-01 EJA879 - Jul 1, 12:20 UTCJul 1, 13:45 UTC1h 25m
2026-06-30 EJA879 - Jun 30, 20:20 UTCJun 30, 21:30 UTC1h 10m
2026-06-30 EJA879 - Jun 30, 17:50 UTCJun 30, 19:40 UTC1h 50m
2026-06-30 EJA879 - Jun 30, 15:15 UTCJun 30, 16:10 UTC55m
2026-06-30 EJA879 IAD → NEW Jun 30, 12:30 UTCJun 30, 14:35 UTC2h 5m
2026-06-29 EJA879 - Jun 29, 19:39 UTCJun 29, 20:19 UTC40m
2026-06-28 EJA879 - Jun 28, 22:34 UTCJun 28, 23:25 UTC50m
2026-06-28 EJA879 CEZ → BOS Jun 28, 17:04 UTCJun 28, 21:20 UTC4h 15m
2026-06-28 EJA879 LAS → CEZ Jun 28, 14:45 UTCJun 28, 15:34 UTC50m
2026-06-27 EJA879 - Jun 27, 00:34 UTCJun 27, 03:49 UTC3h 15m
2026-06-26 EJA879 - Jun 26, 22:40 UTCJun 26, 23:00 UTC20m
2026-06-26 EJA879 - Jun 26, 19:14 UTCJun 26, 21:45 UTC2h 30m
2026-06-26 EJA879 LAS → VNY Jun 26, 17:15 UTCJun 26, 18:09 UTC55m
2026-06-26 EJA879 - Jun 26, 02:54 UTCJun 26, 03:50 UTC55m
2026-06-25 EJA879 - Jun 25, 21:29 UTCJun 26, 01:54 UTC4h 25m
2026-06-25 EJA879 - Jun 25, 18:50 UTCJun 25, 19:15 UTC25m
2026-06-25 EJA879 - Jun 25, 16:55 UTCJun 25, 17:54 UTC1h 0m
2026-06-25 EJA879 LUK → BOS Jun 25, 01:30 UTCJun 25, 03:04 UTC1h 35m
2026-06-24 EJA879 - Jun 24, 21:00 UTCJun 24, 22:39 UTC1h 40m
2026-06-24 EJA879 - Jun 24, 16:45 UTCJun 24, 18:15 UTC1h 30m
2026-06-24 EJA879 - Jun 24, 13:54 UTCJun 24, 15:44 UTC1h 50m
2026-06-24 EJA879 - Jun 24, 11:09 UTCJun 24, 12:44 UTC1h 35m
2026-06-23 EJA879 - Jun 23, 21:20 UTCJun 23, 23:24 UTC2h 5m
2026-06-23 EJA879 - Jun 23, 18:14 UTCJun 23, 18:55 UTC40m
2026-06-18 EJA879 - Jun 18, 12:35 UTCJun 18, 12:50 UTC15m
2026-06-17 EJA879 - Jun 17, 20:10 UTCJun 17, 21:15 UTC1h 5m
2026-06-15 EJA879 - Jun 15, 23:30 UTCJun 16, 00:00 UTC30m
2026-06-15 EJA879 - Jun 15, 21:20 UTCJun 15, 22:35 UTC1h 15m
2026-06-15 EJA879 TEB → BED Jun 15, 19:00 UTCJun 15, 19:39 UTC40m
2026-06-15 EJA879 - Jun 15, 16:04 UTCJun 15, 17:30 UTC1h 25m
2026-06-15 EJA879 - Jun 15, 12:35 UTCJun 15, 14:15 UTC1h 40m
2026-06-15 EJA879 - Jun 15, 10:24 UTCJun 15, 11:05 UTC40m
2026-06-14 EJA879 - Jun 14, 20:30 UTCJun 14, 21:20 UTC50m
2026-06-14 EJA879 TEB → IAD Jun 14, 18:25 UTCJun 14, 19:10 UTC45m
2026-06-14 EJA879 - Jun 14, 15:20 UTCJun 14, 16:00 UTC40m
2026-06-14 EJA879 - Jun 14, 13:50 UTCJun 14, 14:30 UTC40m

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 10h 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.