Apparatus

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sensors Mode-S transponder

A73735

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N564QS · CESSNA 680 Citation Latitude · operated by NETJETS SALES INC, ADAR AVIATION LLC, FISHER AUDREY H, PYOTT DAVIS E TRUSTEE, WATSON MAX P JR, MCCOLEE PARTNERS LLC

Hex
A73735
Octal
51633465
Decimal
10,958,645
Country
US
Tail
N564QS
Type
C68A
No current signal · last broadcast 11h ago
Flights observed
171
Distinct callsigns
2
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S A73735.

Country allocation

The ICAO 24-bit address A73735 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
EJA564 - 162 2026-07-14
N564QS - 9 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 EJA564 - Jul 14, 00:45 UTCJul 14, 02:15 UTC1h 30m
2026-07-13 EJA564 - Jul 13, 17:10 UTCJul 13, 21:45 UTC4h 35m
2026-07-08 EJA564 COE → LAS Jul 8, 16:55 UTCJul 8, 19:00 UTC2h 5m
2026-07-07 EJA564 BFI → COE Jul 7, 23:35 UTCJul 8, 00:50 UTC1h 15m
2026-07-06 EJA564 - Jul 6, 18:05 UTCJul 6, 19:20 UTC1h 15m
2026-07-02 EJA564 - Jul 2, 19:20 UTCJul 3, 14:20 UTC19h 0m
2026-07-02 EJA564 - Jul 2, 18:00 UTCJul 3, 14:20 UTC20h 20m
2026-07-02 EJA564 - Jul 2, 15:15 UTCJul 2, 16:20 UTC1h 5m
2026-07-02 EJA564 - Jul 2, 13:45 UTCJul 2, 14:15 UTC30m
2026-07-02 EJA564 - Jul 2, 12:25 UTCJul 2, 13:00 UTC35m
2026-07-01 EJA564 - Jul 1, 22:40 UTCJul 1, 23:20 UTC40m
2026-07-01 EJA564 - Jul 1, 20:30 UTCJul 1, 21:05 UTC35m
2026-07-01 EJA564 - Jul 1, 18:25 UTCJul 1, 19:05 UTC40m
2026-07-01 EJA564 - Jul 1, 15:40 UTCJul 1, 16:50 UTC1h 10m
2026-07-01 EJA564 - Jul 1, 13:10 UTCJul 1, 14:30 UTC1h 20m
2026-06-30 EJA564 - Jun 30, 20:50 UTCJun 30, 21:40 UTC50m
2026-06-30 EJA564 - Jun 30, 17:35 UTCJun 30, 19:50 UTC2h 15m
2026-06-30 EJA564 - Jun 30, 14:10 UTCJun 30, 16:15 UTC2h 5m
2026-06-29 EJA564 - Jun 29, 18:14 UTCJun 29, 21:54 UTC3h 40m
2026-06-29 EJA564 - Jun 29, 12:24 UTCJun 29, 15:54 UTC3h 30m
2026-06-29 EJA564 - Jun 29, 01:34 UTCJun 29, 01:55 UTC20m
2026-06-28 N564QS - Jun 28, 22:34 UTCJun 29, 00:34 UTC2h 0m
2026-06-27 N564QS - Jun 27, 12:39 UTCJun 27, 14:09 UTC1h 30m
2026-06-26 N564QS - Jun 26, 23:15 UTCJun 27, 01:35 UTC2h 20m
2026-06-26 N564QS - Jun 26, 16:44 UTCJun 26, 16:54 UTC10m
2026-06-25 N564QS - Jun 25, 22:14 UTCJun 25, 23:19 UTC1h 5m
2026-06-25 EJA564 - Jun 25, 19:20 UTCJun 25, 21:15 UTC1h 55m
2026-06-25 EJA564 LAS → SUS Jun 25, 15:04 UTCJun 25, 18:00 UTC2h 55m
2026-06-24 EJA564 - Jun 24, 18:44 UTCJun 24, 19:29 UTC45m
2026-06-18 EJA564 - Jun 18, 21:50 UTCJun 18, 22:45 UTC55m
2026-06-18 EJA564 - Jun 18, 18:30 UTCJun 18, 19:55 UTC1h 25m
2026-06-18 EJA564 - Jun 18, 00:05 UTCJun 18, 00:25 UTC20m
2026-06-17 EJA564 - Jun 17, 19:25 UTCJun 17, 20:50 UTC1h 25m
2026-06-17 EJA564 - Jun 17, 16:55 UTCJun 17, 17:25 UTC30m
2026-06-17 EJA564 SMF → SLC Jun 17, 03:05 UTCJun 17, 04:25 UTC1h 20m
2026-06-16 EJA564 - Jun 16, 23:05 UTCJun 17, 00:10 UTC1h 5m
2026-06-16 EJA564 - Jun 16, 21:25 UTCJun 16, 22:05 UTC40m
2026-06-16 EJA564 - Jun 16, 19:10 UTCJun 16, 20:05 UTC56m
2026-06-16 EJA564 - Jun 16, 17:19 UTCJun 16, 18:09 UTC50m
2026-06-15 EJA564 - Jun 15, 21:20 UTCJun 15, 22:25 UTC1h 5m
2026-06-15 EJA564 - Jun 15, 15:19 UTCJun 15, 19:55 UTC4h 35m
2026-06-15 EJA564 - Jun 15, 10:55 UTCJun 15, 11:39 UTC45m
2026-06-14 EJA564 - Jun 14, 19:50 UTCJun 14, 20:25 UTC35m
2026-06-14 N564QS - Jun 14, 18:10 UTCJun 14, 18:35 UTC25m
2026-06-10 N564QS - Jun 10, 16:00 UTCJun 10, 17:00 UTC1h 0m
2026-06-10 EJA564 ASE → PWK Jun 10, 13:25 UTCJun 10, 14:20 UTC55m
2026-06-07 EJA564 ASE → PWK Jun 7, 21:35 UTCJun 7, 22:35 UTC1h 0m
2026-06-07 EJA564 ASE → PWK Jun 7, 19:00 UTCJun 7, 20:05 UTC1h 5m
2026-06-07 N564QS - Jun 7, 14:20 UTCJun 7, 17:25 UTC3h 5m
2026-06-06 N564QS - Jun 6, 19:44 UTCJun 7, 17:25 UTC21h 40m

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 N564QS page for operator, model, and routing details .

Mode-S A73735 frequently asked

What is Mode-S code A73735?
A73735 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N564QS.
Where is Mode-S A73735 registered?
Mode-S code A73735 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 A73735 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A73735, octal 51633465, decimal 10,958,645.
What flights does A73735 operate?
Mode-S A73735 has broadcast 2 distinct callsigns, including EJA564, N564QS.