Apparatus

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sensors Mode-S transponder

A0DE31

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N155QS · BOMBARDIER BD-700 Global 6000/6500 · operated by NETJETS SALES INC, BLAKELY VENTURES LLC, CLAVIUS BASE INC, EXACTLY! LLC, JENSEN GREGORY S TRUSTEE, OPTIMUM VENTURES 1 LLC

Hex
A0DE31
Octal
50157061
Decimal
10,542,641
Country
US
Tail
N155QS
Type
GLEX
No current signal · last broadcast 2d ago
Flights observed
50
Distinct callsigns
2
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A0DE31.

Country allocation

The ICAO 24-bit address A0DE31 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
EJA155 NetJets 30 2026-05-26
N155QS - 20 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-27 N155QS - May 27, 13:05 UTCMay 27, 15:45 UTC2h 40m
2026-05-26 EJA155 SJC → LAS May 26, 21:59 UTCMay 27, 00:19 UTC2h 20m
2026-05-26 N155QS - May 26, 09:29 UTCMay 26, 16:20 UTC6h 50m
2026-05-25 N155QS - May 25, 12:00 UTCMay 25, 12:25 UTC25m
2026-05-20 N155QS FAO → FAB May 20, 13:45 UTCMay 20, 16:00 UTC2h 15m
2026-05-19 N155QS LIS → FAO May 19, 09:15 UTCMay 19, 09:50 UTC35m
2026-05-19 N155QS TEB → LIS May 19, 01:00 UTCMay 19, 07:05 UTC6h 5m
2026-05-18 EJA155 SJC → LAS May 18, 17:40 UTCMay 18, 20:00 UTC2h 19m
2026-05-18 EJA155 SJC → LAS May 18, 15:25 UTCMay 18, 16:25 UTC1h 0m
2026-05-17 EJA155 SJC → LAS May 17, 20:10 UTCMay 17, 22:30 UTC2h 20m
2026-05-17 EJA155 SJC → LAS May 17, 15:20 UTCMay 17, 17:15 UTC1h 55m
2026-05-16 EJA155 SJC → LAS May 16, 19:35 UTCMay 16, 20:30 UTC55m
2026-05-07 EJA155 SJC → LAS May 7, 21:00 UTCMay 7, 22:15 UTC1h 15m
2026-05-07 EJA155 SJC → LAS May 7, 19:10 UTCMay 7, 20:15 UTC1h 5m
2026-05-07 EJA155 SJC → LAS May 7, 12:05 UTCMay 7, 14:50 UTC2h 45m
2026-05-06 EJA155 SJC → LAS May 6, 21:50 UTCMay 6, 22:20 UTC30m
2026-05-06 EJA155 SJC → LAS May 6, 11:20 UTCMay 6, 13:50 UTC2h 30m
2026-05-05 EJA155 SJC → LAS May 5, 18:50 UTCMay 5, 19:10 UTC20m
2026-05-04 EJA155 SJC → LAS May 4, 21:30 UTCMay 4, 23:00 UTC1h 30m
2026-05-04 EJA155 SJC → LAS May 4, 15:15 UTCMay 4, 18:10 UTC2h 55m
2026-05-04 EJA155 SJC → LAS May 4, 05:35 UTCMay 4, 06:10 UTC35m
2026-05-02 EJA155 SJC → LAS May 2, 17:45 UTCMay 2, 18:00 UTC15m
2026-05-01 N155QS - May 1, 23:40 UTCMay 2, 00:20 UTC40m
2026-04-30 N155QS - Apr 30, 22:35 UTCApr 30, 22:55 UTC20m
2026-04-28 N155QS - Apr 28, 23:50 UTCApr 29, 00:05 UTC15m
2026-04-28 N155QS - Apr 28, 18:10 UTCApr 28, 19:45 UTC1h 35m
2026-04-25 N155QS - Apr 25, 01:45 UTCApr 25, 03:30 UTC1h 45m
2026-04-23 N155QS - Apr 23, 22:05 UTCApr 23, 22:15 UTC10m
2026-04-23 N155QS - Apr 23, 16:45 UTCApr 23, 17:35 UTC50m
2026-04-21 N155QS - Apr 21, 00:05 UTCApr 21, 01:05 UTC1h 0m
2026-04-19 N155QS - Apr 19, 21:55 UTCApr 19, 22:15 UTC20m
2026-04-17 N155QS - Apr 17, 20:45 UTCApr 17, 21:05 UTC20m
2026-04-17 N155QS - Apr 17, 15:20 UTCApr 17, 16:30 UTC1h 10m
2026-04-17 N155QS - Apr 17, 13:20 UTCApr 17, 15:15 UTC1h 54m
2026-04-17 N155QS - Apr 17, 11:40 UTCApr 17, 13:15 UTC1h 35m
2026-04-17 EJA155 SJC → LAS Apr 17, 01:20 UTCApr 17, 01:50 UTC30m
2026-04-16 EJA155 SJC → LAS Apr 16, 23:20 UTCApr 17, 01:15 UTC1h 55m
2026-04-16 EJA155 SJC → LAS Apr 16, 22:00 UTCApr 16, 23:10 UTC1h 10m
2026-04-16 EJA155 SJC → LAS Apr 16, 07:09 UTCApr 16, 07:49 UTC40m
2026-04-16 EJA155 SJC → LAS Apr 16, 05:09 UTCApr 16, 07:05 UTC1h 55m
2026-04-16 EJA155 SJC → LAS Apr 16, 03:09 UTCApr 16, 05:05 UTC1h 55m
2026-04-16 EJA155 SJC → LAS Apr 16, 02:00 UTCApr 16, 03:04 UTC1h 5m
2026-04-16 EJA155 SJC → LAS Apr 16, 00:05 UTCApr 16, 00:55 UTC50m
2026-04-15 EJA155 SJC → LAS Apr 15, 00:55 UTCApr 15, 02:25 UTC1h 30m
2026-04-15 EJA155 SJC → LAS Apr 15, 00:15 UTCApr 15, 00:50 UTC35m
2026-04-14 EJA155 SJC → LAS Apr 14, 22:55 UTCApr 14, 23:30 UTC35m
2026-04-14 EJA155 SJC → LAS Apr 14, 20:55 UTCApr 14, 22:50 UTC1h 55m
2026-04-14 EJA155 SJC → LAS Apr 14, 19:50 UTCApr 14, 20:50 UTC1h 0m
2026-04-13 EJA155 SJC → LAS Apr 13, 04:35 UTCApr 13, 05:40 UTC1h 5m
2026-04-13 N155QS - Apr 13, 02:40 UTCApr 13, 03:10 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 N155QS page for operator, model, and routing details .

Mode-S A0DE31 frequently asked

What is Mode-S code A0DE31?
A0DE31 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N155QS.
Where is Mode-S A0DE31 registered?
Mode-S code A0DE31 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 A0DE31 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0DE31, octal 50157061, decimal 10,542,641.
What flights does A0DE31 operate?
Mode-S A0DE31 has broadcast 2 distinct callsigns, including EJA155, N155QS.