Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA558A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N765QS · BOMBARDIER BD-100 Challenger 350 · operated by NETJETS SALES INC, MOMENT JASON, MOMENT JESSICA, BARGER MATTHEW R, MIRCROSOFT FINANCING CORP, WORKDAY INC

Hex
AA558A
Octal
52452612
Decimal
11,163,018
Country
US
Tail
N765QS
Type
CL35
Broadcasting now · callsign EJA765 · 19,925 ft
Flights observed
113
Distinct callsigns
2
Country
US
Last broadcast
31m ago

Current position

AA558A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA558A 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
EJA765 NetJets 103 2026-06-20
N765QS - 10 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-20 EJA765 TEB → MDW Jun 20, 02:19 UTCJun 20, 02:29 UTC10m
2026-06-19 EJA765 TEB → MDW Jun 19, 23:14 UTCJun 19, 23:59 UTC45m
2026-06-19 EJA765 TEB → MDW Jun 19, 21:14 UTCJun 19, 22:04 UTC50m
2026-06-19 EJA765 TEB → MDW Jun 19, 17:59 UTCJun 19, 18:44 UTC45m
2026-06-19 EJA765 TEB → MDW Jun 19, 16:39 UTCJun 19, 16:59 UTC20m
2026-06-18 EJA765 TEB → MDW Jun 18, 21:40 UTCJun 19, 01:59 UTC4h 19m
2026-06-18 EJA765 TEB → MDW Jun 18, 19:40 UTCJun 18, 20:05 UTC25m
2026-06-18 EJA765 TEB → MDW Jun 18, 17:55 UTCJun 18, 18:35 UTC40m
2026-06-18 N765QS - Jun 18, 15:00 UTCJun 18, 16:00 UTC1h 0m
2026-06-17 N765QS - Jun 17, 16:35 UTCJun 18, 16:00 UTC23h 25m
2026-06-17 N765QS - Jun 17, 16:20 UTCJun 17, 18:15 UTC1h 55m
2026-06-17 EJA765 TEB → MDW Jun 17, 14:10 UTCJun 17, 15:05 UTC55m
2026-06-17 EJA765 TEB → MDW Jun 17, 10:10 UTCJun 17, 12:45 UTC2h 35m
2026-06-16 EJA765 TEB → MDW Jun 16, 20:05 UTCJun 16, 20:35 UTC30m
2026-06-16 EJA765 TEB → MDW Jun 16, 17:00 UTCJun 16, 17:30 UTC30m
2026-06-16 EJA765 TEB → MDW Jun 16, 14:30 UTCJun 16, 14:45 UTC15m
2026-06-15 EJA765 TEB → MDW Jun 15, 17:15 UTCJun 15, 17:30 UTC15m
2026-06-15 N765QS - Jun 15, 15:30 UTCJun 15, 15:50 UTC20m
2026-06-15 N765QS - Jun 15, 13:25 UTCJun 15, 13:54 UTC30m
2026-06-14 EJA765 TEB → MDW Jun 14, 17:30 UTCJun 14, 19:45 UTC2h 15m
2026-06-14 EJA765 TEB → MDW Jun 14, 14:00 UTCJun 14, 15:45 UTC1h 45m
2026-06-13 EJA765 TEB → MDW Jun 13, 23:30 UTCJun 14, 00:05 UTC35m
2026-06-13 EJA765 TEB → MDW Jun 13, 19:00 UTCJun 13, 20:25 UTC1h 25m
2026-06-13 EJA765 TEB → MDW Jun 13, 17:15 UTCJun 13, 18:15 UTC1h 0m
2026-06-12 EJA765 TEB → MDW Jun 12, 18:35 UTCJun 12, 20:20 UTC1h 45m
2026-06-12 EJA765 TEB → MDW Jun 12, 12:50 UTCJun 12, 16:35 UTC3h 45m
2026-06-11 EJA765 TEB → MDW Jun 11, 19:20 UTCJun 11, 21:30 UTC2h 10m
2026-06-11 EJA765 TEB → MDW Jun 11, 15:45 UTCJun 11, 17:45 UTC2h 0m
2026-06-11 N765QS - Jun 11, 14:05 UTCJun 11, 14:40 UTC35m
2026-06-10 N765QS - Jun 10, 14:25 UTCJun 10, 15:00 UTC35m
2026-06-10 EJA765 TEB → MDW Jun 10, 00:25 UTCJun 10, 01:00 UTC35m
2026-06-09 EJA765 TEB → MDW Jun 9, 21:40 UTCJun 9, 22:20 UTC40m
2026-06-09 EJA765 TEB → MDW Jun 9, 19:30 UTCJun 9, 20:25 UTC55m
2026-06-09 EJA765 TEB → MDW Jun 9, 15:40 UTCJun 9, 15:50 UTC10m
2026-06-09 EJA765 TEB → MDW Jun 9, 00:30 UTCJun 9, 01:10 UTC40m
2026-06-08 EJA765 TEB → MDW Jun 8, 18:25 UTCJun 8, 23:40 UTC5h 15m
2026-06-08 EJA765 TEB → MDW Jun 8, 15:20 UTCJun 8, 17:15 UTC1h 55m
2026-06-07 EJA765 TEB → MDW Jun 7, 23:40 UTCJun 8, 01:50 UTC2h 10m
2026-06-07 EJA765 TEB → MDW Jun 7, 19:35 UTCJun 7, 20:00 UTC25m
2026-06-07 EJA765 TEB → MDW Jun 7, 17:30 UTCJun 7, 18:40 UTC1h 10m
2026-06-07 EJA765 TEB → MDW Jun 7, 15:05 UTCJun 7, 16:15 UTC1h 10m
2026-06-07 EJA765 TEB → MDW Jun 7, 13:00 UTCJun 7, 14:00 UTC1h 0m
2026-06-07 EJA765 TEB → MDW Jun 7, 11:30 UTCJun 7, 11:50 UTC20m
2026-06-06 EJA765 TEB → MDW Jun 6, 20:00 UTCJun 6, 20:39 UTC40m
2026-06-06 EJA765 TEB → MDW Jun 6, 14:09 UTCJun 6, 17:19 UTC3h 10m
2026-06-06 EJA765 TEB → MDW Jun 6, 12:20 UTCJun 6, 13:00 UTC40m
2026-06-05 EJA765 TEB → MDW Jun 5, 19:05 UTCJun 5, 19:50 UTC45m
2026-06-05 EJA765 TEB → MDW Jun 5, 16:25 UTCJun 5, 17:30 UTC1h 5m
2026-06-05 EJA765 TEB → MDW Jun 5, 13:20 UTCJun 5, 14:40 UTC1h 20m
2026-06-04 EJA765 TEB → MDW Jun 4, 22:55 UTCJun 5, 00:05 UTC1h 10m

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 N765QS page for operator, model, and routing details .

Mode-S AA558A frequently asked

What is Mode-S code AA558A?
AA558A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N765QS.
Where is Mode-S AA558A registered?
Mode-S code AA558A 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 AA558A broadcasting right now?
Yes. Mode-S AA558A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA558A, octal 52452612, decimal 11,163,018.
What flights does AA558A operate?
Mode-S AA558A has broadcast 2 distinct callsigns, including EJA765, N765QS.