Apparatus

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sensors Mode-S transponder

A238DC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N242QS · BOMBARDIER CL-600 Challenger · operated by NETJETS SALES INC, BANK OF AMERICA NA, BKRFLY LLC, JJ AIR LLC, HUND-MEJEAN MARTINA, MEJEAN BRUNO

Hex
A238DC
Octal
50434334
Decimal
10,631,388
Country
US
Tail
N242QS
Type
CL60
No current signal · last broadcast Jul 26, 20:40 UTC
Flights observed
89
Distinct callsigns
2
Country
US
Last broadcast
Jul 26, 20:40 UTC

Last known position

Most recent position reported by Mode-S A238DC.

Country allocation

The ICAO 24-bit address A238DC 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
EJA242 NetJets 77 2026-07-26
N242QS - 12 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EJA242 BZN → VNY Jul 26, 20:20 UTCJul 26, 20:35 UTC15m
2026-07-26 N242QS - Jul 26, 18:20 UTCJul 26, 19:20 UTC1h 0m
2026-07-26 N242QS - Jul 26, 13:40 UTCJul 26, 14:30 UTC50m
2026-07-25 EJA242 BZN → VNY Jul 25, 20:10 UTCJul 25, 20:55 UTC45m
2026-07-25 EJA242 BZN → VNY Jul 25, 16:30 UTCJul 25, 18:00 UTC1h 30m
2026-07-25 EJA242 BZN → VNY Jul 25, 00:20 UTCJul 25, 00:30 UTC10m
2026-07-23 EJA242 BZN → VNY Jul 23, 19:20 UTCJul 23, 20:50 UTC1h 30m
2026-07-23 EJA242 BZN → VNY Jul 23, 16:45 UTCJul 23, 18:05 UTC1h 20m
2026-07-23 EJA242 BZN → VNY Jul 23, 14:30 UTCJul 23, 15:30 UTC1h 0m
2026-07-22 EJA242 BZN → VNY Jul 22, 22:15 UTCJul 23, 00:10 UTC1h 55m
2026-07-22 EJA242 BZN → VNY Jul 22, 19:10 UTCJul 22, 21:25 UTC2h 15m
2026-07-22 EJA242 BZN → VNY Jul 22, 01:25 UTCJul 22, 04:15 UTC2h 50m
2026-07-21 EJA242 BZN → VNY Jul 21, 21:40 UTCJul 22, 00:50 UTC3h 10m
2026-07-21 EJA242 BZN → VNY Jul 21, 17:00 UTCJul 21, 19:15 UTC2h 15m
2026-07-20 N242QS - Jul 20, 22:10 UTCJul 21, 00:40 UTC2h 29m
2026-07-20 N242QS - Jul 20, 21:55 UTCJul 20, 22:05 UTC10m
2026-07-20 N242QS - Jul 20, 17:00 UTCJul 20, 17:40 UTC40m
2026-07-20 N242QS - Jul 20, 14:35 UTCJul 20, 14:50 UTC15m
2026-07-19 N242QS - Jul 19, 19:40 UTCJul 19, 20:00 UTC20m
2026-07-19 EJA242 - Jul 19, 16:15 UTCJul 19, 18:50 UTC2h 35m
2026-07-19 EJA242 - Jul 19, 13:30 UTCJul 19, 14:05 UTC35m
2026-07-17 EJA242 LAS → TEB Jul 17, 17:15 UTCJul 17, 21:44 UTC4h 30m
2026-07-16 EJA242 - Jul 16, 23:40 UTCJul 17, 04:14 UTC4h 35m
2026-07-16 EJA242 - Jul 16, 20:39 UTCJul 16, 21:10 UTC30m
2026-07-16 EJA242 - Jul 16, 01:20 UTCJul 16, 03:15 UTC1h 55m
2026-07-15 EJA242 - Jul 15, 01:15 UTCJul 15, 03:05 UTC1h 50m
2026-07-14 EJA242 TEB → DAL Jul 14, 13:00 UTCJul 14, 15:50 UTC2h 50m
2026-07-14 EJA242 - Jul 14, 11:40 UTCJul 14, 12:10 UTC30m
2026-07-14 EJA242 - Jul 14, 02:20 UTCJul 14, 02:45 UTC25m
2026-07-14 EJA242 IAD → TEB Jul 14, 00:55 UTCJul 14, 02:15 UTC1h 20m
2026-07-13 EJA242 - Jul 13, 21:00 UTCJul 13, 21:45 UTC45m
2026-07-13 EJA242 CAK → CMH Jul 13, 17:55 UTCJul 13, 18:25 UTC30m
2026-07-12 EJA242 DFW → CAK Jul 12, 15:10 UTCJul 12, 17:20 UTC2h 10m
2026-07-12 EJA242 - Jul 12, 12:35 UTCJul 12, 13:25 UTC50m
2026-07-11 EJA242 - Jul 11, 20:05 UTCJul 11, 23:15 UTC3h 10m
2026-07-11 EJA242 - Jul 11, 18:00 UTCJul 11, 18:35 UTC35m
2026-07-10 EJA242 - Jul 10, 23:25 UTCJul 11, 00:10 UTC45m
2026-07-10 EJA242 - Jul 10, 20:50 UTCJul 10, 21:25 UTC35m
2026-07-10 EJA242 - Jul 10, 19:05 UTCJul 10, 19:50 UTC45m
2026-07-06 EJA242 SBA → LAS Jul 6, 21:45 UTCJul 6, 22:35 UTC50m
2026-07-06 EJA242 - Jul 6, 19:20 UTCJul 6, 20:15 UTC55m
2026-07-06 EJA242 - Jul 6, 15:35 UTCJul 6, 16:25 UTC50m
2026-07-03 EJA242 - Jul 3, 22:35 UTCJul 4, 00:25 UTC1h 50m
2026-07-03 EJA242 - Jul 3, 02:20 UTCJul 3, 07:25 UTC5h 5m
2026-07-02 EJA242 SJC → EWR Jul 2, 17:45 UTCJul 2, 22:40 UTC4h 55m
2026-07-02 EJA242 - Jul 2, 13:55 UTCJul 2, 15:45 UTC1h 50m
2026-07-01 EJA242 - Jul 1, 19:10 UTCJul 1, 20:55 UTC1h 45m
2026-07-01 EJA242 - Jul 1, 15:45 UTCJul 1, 16:15 UTC30m
2026-06-29 EJA242 - Jun 29, 23:44 UTCJun 29, 23:49 UTC5m
2026-06-29 EJA242 - Jun 29, 20:15 UTCJun 29, 23:05 UTC2h 50m

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 N242QS page for operator, model, and routing details .

Mode-S A238DC frequently asked

What is Mode-S code A238DC?
A238DC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N242QS.
Where is Mode-S A238DC registered?
Mode-S code A238DC 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 A238DC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A238DC, octal 50434334, decimal 10,631,388.
What flights does A238DC operate?
Mode-S A238DC has broadcast 2 distinct callsigns, including EJA242, N242QS.