Apparatus

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sensors Mode-S transponder

A0FE42

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N163QS · BOMBARDIER BD-700 Global 6000/6500 · operated by NETJETS SALES INC, MMAR HNL LLC

Hex
A0FE42
Octal
50177102
Decimal
10,550,850
Country
US
Tail
N163QS
Type
GLEX
No current signal · last broadcast 12h ago
Flights observed
43
Distinct callsigns
2
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A0FE42.

Country allocation

The ICAO 24-bit address A0FE42 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
EJA163 NetJets 29 2026-06-16
N163QS - 14 2026-06-18

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-06-18 N163QS - Jun 18, 14:25 UTCJun 18, 15:10 UTC45m
2026-06-17 N163QS - Jun 17, 06:45 UTCJun 17, 07:55 UTC1h 10m
2026-06-16 N163QS - Jun 16, 22:35 UTCJun 17, 05:30 UTC6h 55m
2026-06-16 EJA163 SJC → TRM Jun 16, 14:09 UTCJun 16, 17:49 UTC3h 40m
2026-06-14 EJA163 SJC → TRM Jun 14, 14:10 UTCJun 14, 16:05 UTC1h 55m
2026-06-04 EJA163 SJC → TRM Jun 4, 15:10 UTCJun 4, 17:40 UTC2h 30m
2026-05-28 EJA163 SJC → TRM May 28, 00:20 UTCMay 28, 00:40 UTC20m
2026-05-27 N163QS - May 27, 16:55 UTCMay 27, 23:10 UTC6h 15m
2026-05-27 EJA163 SJC → TRM May 27, 13:00 UTCMay 27, 15:25 UTC2h 25m
2026-05-26 EJA163 SJC → TRM May 26, 20:15 UTCMay 26, 20:54 UTC40m
2026-05-26 N163QS - May 26, 09:15 UTCMay 26, 15:54 UTC6h 40m
2026-05-26 N163QS - May 26, 06:25 UTCMay 26, 07:49 UTC1h 25m
2026-05-25 N163QS - May 25, 03:05 UTCMay 25, 10:25 UTC7h 20m
2026-05-24 EJA163 SJC → TRM May 24, 21:25 UTCMay 24, 21:50 UTC25m
2026-05-23 N163QS - May 23, 13:00 UTCMay 23, 22:20 UTC9h 20m
2026-05-22 EJA163 SJC → TRM May 22, 21:45 UTCMay 22, 22:30 UTC45m
2026-05-22 EJA163 SJC → TRM May 22, 20:05 UTCMay 22, 21:00 UTC55m
2026-05-22 EJA163 SJC → TRM May 22, 17:10 UTCMay 22, 18:45 UTC1h 35m
2026-05-22 EJA163 SJC → TRM May 22, 14:05 UTCMay 22, 15:35 UTC1h 30m
2026-05-21 EJA163 SJC → TRM May 21, 22:05 UTCMay 21, 22:30 UTC25m
2026-05-21 EJA163 SJC → TRM May 21, 15:40 UTCMay 21, 20:55 UTC5h 15m
2026-05-18 EJA163 SJC → TRM May 18, 14:35 UTCMay 18, 15:05 UTC30m
2026-05-16 EJA163 SJC → TRM May 16, 00:00 UTCMay 16, 01:25 UTC1h 25m
2026-05-15 EJA163 SJC → TRM May 15, 21:40 UTCMay 15, 22:00 UTC20m
2026-05-14 EJA163 SJC → TRM May 14, 23:30 UTCMay 15, 02:35 UTC3h 5m
2026-05-14 EJA163 SJC → TRM May 14, 18:15 UTCMay 14, 19:40 UTC1h 25m
2026-05-13 EJA163 SJC → TRM May 13, 23:30 UTCMay 14, 03:45 UTC4h 15m
2026-05-13 EJA163 SJC → TRM May 13, 16:45 UTCMay 13, 19:40 UTC2h 55m
2026-05-12 EJA163 SJC → TRM May 12, 12:50 UTCMay 12, 13:45 UTC55m
2026-05-12 EJA163 SJC → TRM May 12, 09:55 UTCMay 12, 11:10 UTC1h 15m
2026-05-11 EJA163 SJC → TRM May 11, 19:35 UTCMay 11, 20:30 UTC55m
2026-05-11 N163QS - May 11, 14:35 UTCMay 11, 18:15 UTC3h 41m
2026-05-10 N163QS - May 10, 18:15 UTCMay 10, 20:50 UTC2h 35m
2026-05-10 N163QS - May 10, 16:40 UTCMay 10, 16:50 UTC10m
2026-05-09 N163QS - May 9, 05:50 UTCMay 9, 10:35 UTC4h 45m
2026-05-08 EJA163 SJC → TRM May 8, 03:09 UTCMay 8, 04:09 UTC1h 0m
2026-05-07 EJA163 SJC → TRM May 7, 22:10 UTCMay 8, 02:14 UTC4h 5m
2026-05-07 EJA163 SJC → TRM May 7, 19:05 UTCMay 7, 21:05 UTC2h 0m
2026-05-07 N163QS - May 7, 01:20 UTCMay 7, 10:45 UTC9h 25m
2026-05-05 N163QS - May 5, 10:55 UTCMay 5, 18:30 UTC7h 35m
2026-05-04 EJA163 SJC → TRM May 4, 20:25 UTCMay 4, 22:50 UTC2h 25m
2026-05-04 EJA163 SJC → TRM May 4, 17:40 UTCMay 4, 18:35 UTC56m
2026-05-04 EJA163 SJC → TRM May 4, 14:45 UTCMay 4, 15:50 UTC1h 5m

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 N163QS page for operator, model, and routing details .

Mode-S A0FE42 frequently asked

What is Mode-S code A0FE42?
A0FE42 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N163QS.
Where is Mode-S A0FE42 registered?
Mode-S code A0FE42 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 A0FE42 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0FE42, octal 50177102, decimal 10,550,850.
What flights does A0FE42 operate?
Mode-S A0FE42 has broadcast 2 distinct callsigns, including EJA163, N163QS.