Apparatus

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sensors Mode-S transponder

A56D7B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N449QS · EMBRAER EMB-505 Phenom 300 · operated by NETJETS SALES INC, JAR JET LLC, VAN HARTE JEFFERY S TRUSTEE, SMITH MELISSA L TRUSTEE, KP AVIATION LLC, MAGELLAN PROPERTIES LLC

Hex
A56D7B
Octal
51266573
Decimal
10,841,467
Country
US
Tail
N449QS
Type
E55P
No current signal · last broadcast Jul 25, 21:05 UTC
Flights observed
259
Distinct callsigns
2
Country
US
Last broadcast
Jul 25, 21:05 UTC

Last known position

Most recent position reported by Mode-S A56D7B.

Country allocation

The ICAO 24-bit address A56D7B 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
EJA449 NetJets 254 2026-07-25
N449QS - 5 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 EJA449 TEB → PDK Jul 25, 20:05 UTCJul 25, 21:05 UTC1h 0m
2026-07-25 EJA449 TEB → PDK Jul 25, 17:10 UTCJul 25, 19:00 UTC1h 50m
2026-07-25 EJA449 TEB → PDK Jul 25, 15:10 UTCJul 25, 16:05 UTC55m
2026-07-25 EJA449 TEB → PDK Jul 25, 13:10 UTCJul 25, 14:00 UTC50m
2026-07-24 EJA449 TEB → PDK Jul 24, 21:20 UTCJul 24, 22:35 UTC1h 15m
2026-07-24 EJA449 TEB → PDK Jul 24, 19:30 UTCJul 24, 20:40 UTC1h 10m
2026-07-24 EJA449 TEB → PDK Jul 24, 18:10 UTCJul 24, 18:20 UTC10m
2026-07-24 EJA449 TEB → PDK Jul 24, 15:10 UTCJul 24, 17:25 UTC2h 15m
2026-07-24 EJA449 - Jul 24, 12:25 UTCJul 24, 13:35 UTC1h 10m
2026-07-22 EJA449 STL → PAH Jul 22, 18:40 UTCJul 22, 19:10 UTC30m
2026-07-22 EJA449 CMI → STL Jul 22, 16:00 UTCJul 22, 16:30 UTC30m
2026-07-22 EJA449 - Jul 22, 12:15 UTCJul 22, 13:00 UTC45m
2026-07-21 EJA449 - Jul 21, 22:20 UTCJul 22, 00:20 UTC2h 0m
2026-07-21 EJA449 - Jul 21, 19:05 UTCJul 21, 19:55 UTC50m
2026-07-21 EJA449 - Jul 21, 17:40 UTCJul 21, 17:50 UTC10m
2026-07-20 EJA449 - Jul 20, 22:40 UTCJul 21, 01:35 UTC2h 54m
2026-07-20 EJA449 - Jul 20, 16:05 UTCJul 20, 18:45 UTC2h 40m
2026-07-20 EJA449 - Jul 20, 12:15 UTCJul 20, 13:20 UTC1h 5m
2026-07-19 EJA449 - Jul 19, 22:30 UTCJul 19, 23:15 UTC45m
2026-07-19 EJA449 - Jul 19, 21:20 UTCJul 19, 21:40 UTC20m
2026-07-19 EJA449 - Jul 19, 17:30 UTCJul 19, 19:55 UTC2h 25m
2026-07-19 EJA449 - Jul 19, 14:05 UTCJul 19, 16:45 UTC2h 40m
2026-07-19 EJA449 - Jul 19, 11:55 UTCJul 19, 12:40 UTC45m
2026-07-18 EJA449 - Jul 18, 21:15 UTCJul 18, 22:35 UTC1h 20m
2026-07-18 EJA449 - Jul 18, 19:05 UTCJul 18, 20:00 UTC55m
2026-07-18 EJA449 - Jul 18, 13:10 UTCJul 18, 13:40 UTC30m
2026-07-17 EJA449 - Jul 17, 22:35 UTCJul 17, 22:49 UTC15m
2026-07-17 EJA449 - Jul 17, 20:04 UTCJul 17, 21:34 UTC1h 30m
2026-07-17 EJA449 - Jul 17, 17:50 UTCJul 17, 18:34 UTC45m
2026-07-17 EJA449 TPA → PVD Jul 17, 14:04 UTCJul 17, 16:59 UTC2h 55m
2026-07-16 EJA449 - Jul 16, 22:05 UTCJul 16, 22:15 UTC10m
2026-07-16 EJA449 - Jul 16, 18:29 UTCJul 16, 20:35 UTC2h 5m
2026-07-16 EJA449 - Jul 16, 16:25 UTCJul 16, 17:30 UTC1h 5m
2026-07-16 EJA449 - Jul 16, 01:35 UTCJul 16, 03:10 UTC1h 35m
2026-07-15 EJA449 - Jul 15, 23:40 UTCJul 16, 00:35 UTC55m
2026-07-15 EJA449 - Jul 15, 20:10 UTCJul 15, 22:20 UTC2h 10m
2026-07-15 EJA449 BNA → TEB Jul 15, 16:30 UTCJul 15, 18:30 UTC2h 0m
2026-07-14 EJA449 - Jul 14, 20:25 UTCJul 14, 21:35 UTC1h 10m
2026-07-14 EJA449 - Jul 14, 18:10 UTCJul 14, 18:25 UTC15m
2026-07-14 EJA449 - Jul 14, 15:35 UTCJul 14, 16:00 UTC25m
2026-07-14 EJA449 - Jul 14, 00:35 UTCJul 14, 02:40 UTC2h 5m
2026-07-13 EJA449 - Jul 13, 21:25 UTCJul 13, 23:30 UTC2h 5m
2026-07-13 EJA449 - Jul 13, 18:55 UTCJul 13, 19:45 UTC50m
2026-07-13 EJA449 - Jul 13, 17:25 UTCJul 13, 18:10 UTC45m
2026-07-13 EJA449 - Jul 13, 00:05 UTCJul 13, 03:15 UTC3h 10m
2026-07-12 EJA449 CCR → LAS Jul 12, 17:20 UTCJul 12, 22:20 UTC5h 0m
2026-07-11 EJA449 SJC → CCR Jul 11, 20:45 UTCJul 11, 21:00 UTC15m
2026-07-09 EJA449 - Jul 9, 01:40 UTCJul 9, 02:40 UTC1h 0m
2026-07-09 EJA449 - Jul 9, 00:05 UTCJul 9, 01:00 UTC55m
2026-07-08 EJA449 - Jul 8, 18:05 UTCJul 8, 18:45 UTC40m

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 N449QS page for operator, model, and routing details .

Mode-S A56D7B frequently asked

What is Mode-S code A56D7B?
A56D7B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N449QS.
Where is Mode-S A56D7B registered?
Mode-S code A56D7B 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 A56D7B broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 21:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A56D7B, octal 51266573, decimal 10,841,467.
What flights does A56D7B operate?
Mode-S A56D7B has broadcast 2 distinct callsigns, including EJA449, N449QS.