Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A57AF9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N452QS · EMBRAER EMB-505 Phenom 300 · operated by NETJETS SALES INC, RAZDAN ASH, RAZDAN MICHELE, JUNE CARL, DURLING DEAN, EAGLE 22 LLC

Hex
A57AF9
Octal
51275371
Decimal
10,844,921
Country
US
Tail
N452QS
Type
E55P
No current signal · last broadcast 12h ago
Flights observed
167
Distinct callsigns
2
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A57AF9.

Country allocation

The ICAO 24-bit address A57AF9 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
EJA452 NetJets 158 2026-05-29
N452QS - 9 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA452 SFO → SMO May 29, 21:35 UTCMay 29, 22:45 UTC1h 10m
2026-05-29 EJA452 SFO → SMO May 29, 01:50 UTCMay 29, 02:30 UTC40m
2026-05-29 EJA452 SFO → SMO May 29, 00:30 UTCMay 29, 01:15 UTC45m
2026-05-28 EJA452 SFO → SMO May 28, 17:15 UTCMay 28, 19:35 UTC2h 20m
2026-05-28 EJA452 SFO → SMO May 28, 13:50 UTCMay 28, 15:15 UTC1h 25m
2026-05-28 EJA452 SFO → SMO May 28, 12:10 UTCMay 28, 12:45 UTC35m
2026-05-28 EJA452 SFO → SMO May 28, 10:30 UTCMay 28, 11:05 UTC35m
2026-05-27 EJA452 SFO → SMO May 27, 20:50 UTCMay 27, 21:50 UTC1h 0m
2026-05-27 EJA452 SFO → SMO May 27, 18:10 UTCMay 27, 19:05 UTC55m
2026-05-27 EJA452 SFO → SMO May 27, 14:25 UTCMay 27, 15:10 UTC45m
2026-05-27 EJA452 SFO → SMO May 27, 13:10 UTCMay 27, 13:55 UTC45m
2026-05-26 EJA452 SFO → SMO May 26, 21:25 UTCMay 26, 23:25 UTC2h 0m
2026-05-26 EJA452 SFO → SMO May 26, 18:34 UTCMay 26, 19:30 UTC55m
2026-05-26 EJA452 SFO → SMO May 26, 15:14 UTCMay 26, 16:55 UTC1h 40m
2026-05-26 EJA452 SFO → SMO May 26, 12:35 UTCMay 26, 13:40 UTC1h 5m
2026-05-26 EJA452 SFO → SMO May 26, 00:14 UTCMay 26, 01:14 UTC1h 0m
2026-05-25 EJA452 SFO → SMO May 25, 22:49 UTCMay 25, 23:45 UTC55m
2026-05-25 EJA452 SFO → SMO May 25, 18:50 UTCMay 25, 20:45 UTC1h 54m
2026-05-25 EJA452 SFO → SMO May 25, 14:50 UTCMay 25, 17:50 UTC3h 0m
2026-05-24 EJA452 SFO → SMO May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 EJA452 SFO → SMO May 24, 21:25 UTCMay 24, 21:45 UTC20m
2026-05-24 EJA452 SFO → SMO May 24, 17:05 UTCMay 24, 20:05 UTC3h 0m
2026-05-24 EJA452 SFO → SMO May 24, 14:45 UTCMay 24, 15:45 UTC1h 0m
2026-05-23 EJA452 SFO → SMO May 23, 15:20 UTCMay 23, 17:05 UTC1h 45m
2026-05-23 N452QS - May 23, 12:45 UTCMay 23, 13:10 UTC25m
2026-05-22 N452QS - May 22, 20:45 UTCMay 22, 22:50 UTC2h 5m
2026-05-22 EJA452 SFO → SMO May 22, 18:00 UTCMay 22, 18:45 UTC45m
2026-05-22 EJA452 SFO → SMO May 22, 15:15 UTCMay 22, 17:05 UTC1h 50m
2026-05-21 EJA452 SFO → SMO May 21, 22:30 UTCMay 21, 23:45 UTC1h 15m
2026-05-21 EJA452 SFO → SMO May 21, 20:10 UTCMay 21, 21:35 UTC1h 25m
2026-05-21 EJA452 SFO → SMO May 21, 17:40 UTCMay 21, 18:05 UTC25m
2026-05-21 EJA452 SFO → SMO May 21, 15:45 UTCMay 21, 16:40 UTC55m
2026-05-21 EJA452 SFO → SMO May 21, 13:35 UTCMay 21, 14:25 UTC50m
2026-05-20 EJA452 SFO → SMO May 20, 21:25 UTCMay 21, 00:00 UTC2h 35m
2026-05-20 EJA452 SFO → SMO May 20, 19:30 UTCMay 20, 20:15 UTC45m
2026-05-20 EJA452 SFO → SMO May 20, 13:15 UTCMay 20, 16:05 UTC2h 50m
2026-05-19 EJA452 SFO → SMO May 19, 18:30 UTCMay 19, 19:00 UTC30m
2026-05-19 EJA452 SFO → SMO May 19, 15:55 UTCMay 19, 16:30 UTC35m
2026-05-19 EJA452 SFO → SMO May 19, 14:10 UTCMay 19, 15:00 UTC50m
2026-05-19 EJA452 SFO → SMO May 19, 11:30 UTCMay 19, 12:15 UTC45m
2026-05-18 EJA452 SFO → SMO May 18, 18:30 UTCMay 18, 19:30 UTC1h 0m
2026-05-18 EJA452 SFO → SMO May 18, 15:25 UTCMay 18, 15:50 UTC25m
2026-05-18 EJA452 SFO → SMO May 18, 12:05 UTCMay 18, 14:30 UTC2h 25m
2026-05-17 EJA452 SFO → SMO May 17, 18:25 UTCMay 17, 22:30 UTC4h 5m
2026-05-17 EJA452 SFO → SMO May 17, 14:45 UTCMay 17, 17:20 UTC2h 35m
2026-05-17 EJA452 SFO → SMO May 17, 12:20 UTCMay 17, 13:20 UTC1h 0m
2026-05-16 EJA452 SFO → SMO May 16, 21:10 UTCMay 16, 22:05 UTC55m
2026-05-16 N452QS - May 16, 19:35 UTCMay 16, 20:10 UTC35m
2026-05-16 N452QS - May 16, 18:15 UTCMay 16, 18:30 UTC15m
2026-05-16 N452QS - May 16, 14:05 UTCMay 16, 14:41 UTC35m

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 N452QS page for operator, model, and routing details .

Mode-S A57AF9 frequently asked

What is Mode-S code A57AF9?
A57AF9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N452QS.
Where is Mode-S A57AF9 registered?
Mode-S code A57AF9 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 A57AF9 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A57AF9, octal 51275371, decimal 10,844,921.
What flights does A57AF9 operate?
Mode-S A57AF9 has broadcast 2 distinct callsigns, including EJA452, N452QS.