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sensors Mode-S transponder

A17876

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N194QS · operated by NETJETS SALES INC

Hex
A17876
Octal
50274166
Decimal
10,582,134
Country
US
Tail
N194QS
No current signal · last broadcast 2h ago
Flights observed
113
Distinct callsigns
2
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A17876.

Country allocation

The ICAO 24-bit address A17876 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
EJA194 - 89 2026-07-11
N194QS - 24 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N194QS - Jul 14, 11:15 UTCJul 14, 14:35 UTC3h 20m
2026-07-14 N194QS - Jul 14, 08:25 UTCJul 14, 08:35 UTC10m
2026-07-13 N194QS - Jul 13, 08:50 UTCJul 13, 11:05 UTC2h 15m
2026-07-12 N194QS SFO → STN Jul 12, 02:20 UTCJul 12, 11:25 UTC9h 5m
2026-07-11 EJA194 VNY → SFO Jul 11, 21:25 UTCJul 11, 22:15 UTC50m
2026-07-10 EJA194 - Jul 10, 00:15 UTCJul 10, 00:55 UTC40m
2026-07-09 EJA194 - Jul 9, 22:10 UTCJul 9, 22:55 UTC45m
2026-07-09 EJA194 SJC → VNY Jul 9, 19:40 UTCJul 9, 20:25 UTC45m
2026-07-08 N194QS - Jul 8, 23:25 UTCJul 9, 00:00 UTC35m
2026-07-06 N194QS - Jul 6, 18:05 UTCJul 6, 18:40 UTC35m
2026-07-05 EJA194 LGB → SJC Jul 5, 21:30 UTCJul 5, 22:20 UTC50m
2026-07-05 EJA194 - Jul 5, 19:15 UTCJul 5, 20:15 UTC1h 0m
2026-07-05 EJA194 BFI → APC Jul 5, 16:35 UTCJul 5, 18:00 UTC1h 25m
2026-07-02 N194QS - Jul 2, 15:45 UTCJul 3, 01:15 UTC9h 30m
2026-07-01 N194QS - Jul 1, 17:30 UTCJul 1, 18:55 UTC1h 25m
2026-06-30 N194QS - Jun 30, 13:30 UTCJun 30, 15:20 UTC1h 50m
2026-06-29 N194QS - Jun 29, 08:04 UTCJun 29, 09:29 UTC1h 25m
2026-06-28 N194QS SLC → ATH Jun 28, 19:04 UTCJun 29, 06:05 UTC11h 0m
2026-06-28 EJA194 TEB → SLC Jun 28, 11:19 UTCJun 28, 15:44 UTC4h 25m
2026-06-26 EJA194 YUL → TEB Jun 26, 22:40 UTCJun 26, 23:34 UTC55m
2026-06-26 EJA194 TEB → YUL Jun 26, 20:29 UTCJun 26, 21:30 UTC1h 0m
2026-06-26 EJA194 - Jun 26, 16:14 UTCJun 26, 17:09 UTC55m
2026-06-25 N194QS - Jun 25, 17:20 UTCJun 26, 00:05 UTC6h 45m
2026-06-25 N194QS - Jun 25, 14:44 UTCJun 25, 15:59 UTC1h 15m
2026-06-25 N194QS - Jun 25, 12:50 UTCJun 25, 13:14 UTC25m
2026-06-24 N194QS BMA → LIN Jun 24, 09:29 UTCJun 24, 11:39 UTC2h 10m
2026-06-22 N194QS BFI → BMA Jun 22, 01:44 UTCJun 22, 09:49 UTC8h 5m
2026-06-20 N194QS NCE → BFI Jun 20, 06:19 UTCJun 20, 15:54 UTC9h 35m
2026-06-18 N194QS ATH → NCE Jun 18, 08:00 UTCJun 18, 10:05 UTC2h 5m
2026-06-16 N194QS - Jun 16, 23:35 UTCJun 17, 07:40 UTC8h 5m
2026-06-15 N194QS - Jun 15, 14:40 UTCJun 15, 20:54 UTC6h 15m
2026-06-14 N194QS - Jun 14, 12:10 UTCJun 14, 17:55 UTC5h 45m
2026-06-14 EJA194 - Jun 14, 10:35 UTCJun 14, 11:05 UTC30m
2026-06-12 EJA194 VNY → TEB Jun 12, 20:25 UTCJun 13, 00:40 UTC4h 15m
2026-06-12 EJA194 BUR → VNY Jun 12, 18:35 UTCJun 12, 18:45 UTC10m
2026-06-11 EJA194 YUL → IAD Jun 11, 18:10 UTCJun 11, 23:30 UTC5h 20m
2026-06-11 EJA194 YUL → IAD Jun 11, 16:00 UTCJun 11, 17:20 UTC1h 20m
2026-06-11 EJA194 YUL → IAD Jun 11, 13:15 UTCJun 11, 14:30 UTC1h 15m
2026-06-10 N194QS - Jun 10, 09:15 UTCJun 10, 16:50 UTC7h 35m
2026-06-09 N194QS NCE → TLN Jun 9, 14:20 UTCJun 9, 14:40 UTC20m
2026-06-08 N194QS - Jun 8, 13:10 UTCJun 8, 21:10 UTC8h 0m
2026-06-07 EJA194 YUL → IAD Jun 7, 22:33 UTCJun 7, 23:15 UTC42m
2026-06-07 EJA194 YUL → IAD Jun 7, 22:10 UTCJun 7, 22:15 UTC5m
2026-06-07 EJA194 YUL → IAD Jun 7, 20:20 UTCJun 7, 21:15 UTC55m
2026-06-07 EJA194 YUL → IAD Jun 7, 16:40 UTCJun 7, 17:20 UTC40m
2026-06-05 EJA194 YUL → IAD Jun 5, 14:00 UTCJun 5, 15:25 UTC1h 25m
2026-06-05 EJA194 YUL → IAD Jun 5, 10:40 UTCJun 5, 13:00 UTC2h 20m
2026-05-31 EJA194 YUL → IAD May 31, 15:50 UTCMay 31, 16:40 UTC50m
2026-05-29 EJA194 YUL → IAD May 29, 20:30 UTCMay 29, 21:35 UTC1h 5m
2026-05-28 EJA194 YUL → IAD May 28, 23:50 UTCMay 29, 00:20 UTC30m

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 N194QS page for operator, model, and routing details .

Mode-S A17876 frequently asked

What is Mode-S code A17876?
A17876 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N194QS.
Where is Mode-S A17876 registered?
Mode-S code A17876 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 A17876 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A17876, octal 50274166, decimal 10,582,134.
What flights does A17876 operate?
Mode-S A17876 has broadcast 2 distinct callsigns, including EJA194, N194QS.