Apparatus

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sensors Mode-S transponder

A2605B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N252QS · BOMBARDIER CL-600 Challenger · operated by NETJETS SALES INC, ASSET RISK MANAGEMENT LLC, DRIVEN CAPITAL MANAGEMENT LLC, EDGAR LLOYD LLC, BRENNAN EDWARD, VISHRIA ERIC

Hex
A2605B
Octal
50460133
Decimal
10,641,499
Country
US
Tail
N252QS
Type
CL60
No current signal · last broadcast 4h ago
Flights observed
86
Distinct callsigns
2
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A2605B.

Country allocation

The ICAO 24-bit address A2605B 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
EJA252 NetJets 81 2026-06-02
N252QS - 5 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 EJA252 TYR → TUS Jun 2, 15:30 UTCJun 2, 20:05 UTC4h 35m
2026-06-01 EJA252 TYR → TUS Jun 1, 21:35 UTCJun 1, 22:35 UTC1h 0m
2026-06-01 EJA252 TYR → TUS Jun 1, 18:50 UTCJun 1, 19:55 UTC1h 5m
2026-06-01 EJA252 TYR → TUS Jun 1, 16:05 UTCJun 1, 17:05 UTC1h 0m
2026-06-01 EJA252 TYR → TUS Jun 1, 13:40 UTCJun 1, 14:45 UTC1h 5m
2026-05-31 EJA252 TYR → TUS May 31, 16:55 UTCMay 31, 19:10 UTC2h 15m
2026-05-31 EJA252 TYR → TUS May 31, 13:25 UTCMay 31, 15:25 UTC2h 0m
2026-05-30 EJA252 TYR → TUS May 30, 21:25 UTCMay 30, 22:30 UTC1h 5m
2026-05-28 EJA252 TYR → TUS May 28, 13:35 UTCMay 28, 14:15 UTC40m
2026-05-27 EJA252 TYR → TUS May 27, 17:55 UTCMay 27, 20:15 UTC2h 20m
2026-05-27 EJA252 TYR → TUS May 27, 11:20 UTCMay 27, 13:40 UTC2h 20m
2026-05-26 EJA252 TYR → TUS May 26, 15:49 UTCMay 26, 16:05 UTC15m
2026-05-25 EJA252 TYR → TUS May 25, 19:59 UTCMay 25, 22:34 UTC2h 35m
2026-05-25 EJA252 TYR → TUS May 25, 16:45 UTCMay 25, 17:50 UTC1h 5m
2026-05-25 EJA252 TYR → TUS May 25, 13:55 UTCMay 25, 14:30 UTC35m
2026-05-23 EJA252 TYR → TUS May 23, 17:15 UTCMay 23, 17:55 UTC40m
2026-05-23 EJA252 TYR → TUS May 23, 12:45 UTCMay 23, 14:45 UTC2h 0m
2026-05-22 N252QS - May 22, 19:05 UTCMay 22, 19:35 UTC30m
2026-05-22 N252QS - May 22, 15:35 UTCMay 22, 17:25 UTC1h 50m
2026-05-21 EJA252 TYR → TUS May 21, 20:25 UTCMay 21, 21:05 UTC40m
2026-05-21 N252QS - May 21, 19:05 UTCMay 21, 19:50 UTC45m
2026-05-21 N252QS - May 21, 17:55 UTCMay 21, 18:05 UTC10m
2026-05-21 N252QS - May 21, 14:00 UTCMay 21, 16:25 UTC2h 25m
2026-05-21 EJA252 TYR → TUS May 21, 00:10 UTCMay 21, 00:40 UTC30m
2026-05-20 EJA252 TYR → TUS May 20, 21:35 UTCMay 20, 23:15 UTC1h 40m
2026-05-20 EJA252 TYR → TUS May 20, 18:55 UTCMay 20, 19:40 UTC45m
2026-05-20 EJA252 TYR → TUS May 20, 16:15 UTCMay 20, 18:05 UTC1h 50m
2026-05-20 EJA252 TYR → TUS May 20, 14:10 UTCMay 20, 14:40 UTC30m
2026-05-19 EJA252 TYR → TUS May 19, 19:35 UTCMay 19, 21:40 UTC2h 5m
2026-05-19 EJA252 TYR → TUS May 19, 15:45 UTCMay 19, 17:00 UTC1h 15m
2026-05-19 EJA252 TYR → TUS May 19, 13:35 UTCMay 19, 14:10 UTC35m
2026-05-18 EJA252 TYR → TUS May 18, 22:55 UTCMay 18, 23:30 UTC35m
2026-05-18 EJA252 TYR → TUS May 18, 17:25 UTCMay 18, 22:10 UTC4h 44m
2026-05-17 EJA252 TYR → TUS May 17, 21:01 UTCMay 17, 23:15 UTC2h 15m
2026-05-17 EJA252 TYR → TUS May 17, 18:35 UTCMay 17, 20:01 UTC1h 25m
2026-05-17 EJA252 TYR → TUS May 17, 14:35 UTCMay 17, 17:10 UTC2h 35m
2026-05-15 EJA252 TYR → TUS May 15, 20:40 UTCMay 15, 22:50 UTC2h 10m
2026-05-15 EJA252 TYR → TUS May 15, 15:35 UTCMay 15, 18:30 UTC2h 55m
2026-05-15 EJA252 TYR → TUS May 15, 13:35 UTCMay 15, 13:50 UTC15m
2026-05-09 EJA252 TYR → TUS May 9, 18:05 UTCMay 9, 18:45 UTC40m
2026-05-08 EJA252 TYR → TUS May 8, 22:40 UTCMay 9, 00:35 UTC1h 55m
2026-05-08 EJA252 TYR → TUS May 8, 20:40 UTCMay 8, 21:25 UTC45m
2026-05-08 EJA252 TYR → TUS May 8, 17:15 UTCMay 8, 19:30 UTC2h 15m
2026-05-08 EJA252 TYR → TUS May 8, 15:45 UTCMay 8, 16:15 UTC30m
2026-05-07 EJA252 TYR → TUS May 7, 23:05 UTCMay 8, 00:20 UTC1h 15m
2026-05-07 EJA252 TYR → TUS May 7, 19:40 UTCMay 7, 21:45 UTC2h 5m
2026-05-07 EJA252 TYR → TUS May 7, 14:30 UTCMay 7, 16:00 UTC1h 30m
2026-05-06 EJA252 TYR → TUS May 6, 21:50 UTCMay 6, 23:30 UTC1h 40m
2026-05-05 EJA252 TYR → TUS May 5, 16:10 UTCMay 5, 20:50 UTC4h 40m
2026-05-04 EJA252 TYR → TUS May 4, 13:45 UTCMay 4, 19:40 UTC5h 56m

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 N252QS page for operator, model, and routing details .

Mode-S A2605B frequently asked

What is Mode-S code A2605B?
A2605B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N252QS.
Where is Mode-S A2605B registered?
Mode-S code A2605B 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 A2605B broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2605B, octal 50460133, decimal 10,641,499.
What flights does A2605B operate?
Mode-S A2605B has broadcast 2 distinct callsigns, including EJA252, N252QS.