Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A258ED

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N250QS · BOMBARDIER CL-600 Challenger · operated by NETJETS SALES INC, AVELLANA TRAVEL LLC, CHTX AVIATION LLC, GTS AVIATION LLC, GUERNSEY PARTNERS LLC, HOLT LOGISTICS CORP

Hex
A258ED
Octal
50454355
Decimal
10,639,597
Country
US
Tail
N250QS
Type
CL60
No current signal · last broadcast 1d ago
Flights observed
81
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A258ED.

Country allocation

The ICAO 24-bit address A258ED 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
EJA250 NetJets 67 2026-06-01
N250QS - 14 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 EJA250 HPN → BED Jun 1, 23:45 UTCJun 1, 23:55 UTC10m
2026-05-31 N250QS - May 31, 22:45 UTCMay 31, 23:15 UTC30m
2026-05-31 N250QS - May 31, 19:30 UTCMay 31, 20:40 UTC1h 10m
2026-05-31 EJA250 HPN → BED May 31, 17:00 UTCMay 31, 18:20 UTC1h 20m
2026-05-31 EJA250 HPN → BED May 31, 12:00 UTCMay 31, 15:05 UTC3h 5m
2026-05-30 EJA250 HPN → BED May 30, 12:20 UTCMay 30, 15:10 UTC2h 50m
2026-05-29 EJA250 HPN → BED May 29, 20:50 UTCMay 29, 21:15 UTC25m
2026-05-29 EJA250 HPN → BED May 29, 17:30 UTCMay 29, 20:05 UTC2h 35m
2026-05-29 EJA250 HPN → BED May 29, 14:00 UTCMay 29, 14:35 UTC35m
2026-05-28 EJA250 HPN → BED May 28, 23:10 UTCMay 29, 00:35 UTC1h 25m
2026-05-26 EJA250 HPN → BED May 26, 10:50 UTCMay 26, 11:34 UTC45m
2026-05-25 EJA250 HPN → BED May 25, 20:40 UTCMay 25, 20:50 UTC10m
2026-05-25 EJA250 HPN → BED May 25, 18:05 UTCMay 25, 19:54 UTC1h 49m
2026-05-23 EJA250 HPN → BED May 23, 11:35 UTCMay 23, 12:10 UTC35m
2026-05-22 EJA250 HPN → BED May 22, 22:00 UTCMay 22, 23:05 UTC1h 5m
2026-05-22 EJA250 HPN → BED May 22, 18:30 UTCMay 22, 20:50 UTC2h 20m
2026-05-22 EJA250 HPN → BED May 22, 13:55 UTCMay 22, 16:05 UTC2h 10m
2026-05-21 N250QS - May 21, 21:20 UTCMay 21, 22:45 UTC1h 25m
2026-05-18 N250QS - May 18, 15:45 UTCMay 18, 16:55 UTC1h 10m
2026-05-18 EJA250 HPN → BED May 18, 12:25 UTCMay 18, 12:40 UTC15m
2026-05-17 EJA250 HPN → BED May 17, 20:50 UTCMay 17, 22:30 UTC1h 40m
2026-05-17 EJA250 HPN → BED May 17, 19:15 UTCMay 17, 19:40 UTC25m
2026-05-17 EJA250 HPN → BED May 17, 17:25 UTCMay 17, 18:05 UTC40m
2026-05-17 EJA250 HPN → BED May 17, 15:01 UTCMay 17, 15:50 UTC50m
2026-05-16 EJA250 HPN → BED May 16, 19:55 UTCMay 16, 20:40 UTC45m
2026-05-09 EJA250 HPN → BED May 9, 17:35 UTCMay 9, 18:10 UTC35m
2026-05-08 EJA250 HPN → BED May 8, 00:25 UTCMay 8, 04:54 UTC4h 30m
2026-05-07 EJA250 HPN → BED May 7, 21:40 UTCMay 7, 21:55 UTC15m
2026-05-07 EJA250 HPN → BED May 7, 18:40 UTCMay 7, 19:50 UTC1h 10m
2026-05-05 EJA250 HPN → BED May 5, 16:35 UTCMay 5, 17:15 UTC40m
2026-05-05 EJA250 HPN → BED May 5, 02:15 UTCMay 5, 03:10 UTC55m
2026-05-05 EJA250 HPN → BED May 5, 00:05 UTCMay 5, 01:25 UTC1h 20m
2026-05-04 EJA250 HPN → BED May 4, 00:34 UTCMay 4, 02:54 UTC2h 20m
2026-05-03 EJA250 HPN → BED May 3, 23:00 UTCMay 4, 00:00 UTC1h 0m
2026-05-03 EJA250 HPN → BED May 3, 20:25 UTCMay 3, 22:15 UTC1h 50m
2026-05-03 EJA250 HPN → BED May 3, 18:20 UTCMay 3, 18:50 UTC30m
2026-05-02 EJA250 HPN → BED May 2, 14:35 UTCMay 2, 17:35 UTC3h 0m
2026-05-01 EJA250 HPN → BED May 1, 23:20 UTCMay 1, 23:55 UTC35m
2026-05-01 EJA250 HPN → BED May 1, 21:20 UTCMay 1, 22:00 UTC40m
2026-05-01 EJA250 HPN → BED May 1, 19:20 UTCMay 1, 20:30 UTC1h 10m
2026-05-01 EJA250 HPN → BED May 1, 16:20 UTCMay 1, 17:50 UTC1h 30m
2026-05-01 EJA250 HPN → BED May 1, 13:40 UTCMay 1, 14:45 UTC1h 5m
2026-04-30 EJA250 HPN → BED Apr 30, 20:25 UTCApr 30, 22:05 UTC1h 40m
2026-04-30 EJA250 HPN → BED Apr 30, 17:00 UTCApr 30, 17:50 UTC50m
2026-04-30 EJA250 HPN → BED Apr 30, 13:20 UTCApr 30, 16:20 UTC3h 0m
2026-04-29 EJA250 HPN → BED Apr 29, 18:55 UTCApr 29, 21:40 UTC2h 45m
2026-04-29 EJA250 HPN → BED Apr 29, 15:30 UTCApr 29, 17:40 UTC2h 10m
2026-04-28 EJA250 HPN → BED Apr 28, 20:55 UTCApr 29, 00:59 UTC4h 5m
2026-04-26 EJA250 HPN → BED Apr 26, 11:55 UTCApr 26, 16:55 UTC5h 0m
2026-04-25 EJA250 HPN → BED Apr 25, 18:10 UTCApr 25, 18:55 UTC45m

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 N250QS page for operator, model, and routing details .

Mode-S A258ED frequently asked

What is Mode-S code A258ED?
A258ED is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N250QS.
Where is Mode-S A258ED registered?
Mode-S code A258ED 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 A258ED broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A258ED, octal 50454355, decimal 10,639,597.
What flights does A258ED operate?
Mode-S A258ED has broadcast 2 distinct callsigns, including EJA250, N250QS.