Apparatus

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sensors Mode-S transponder

A72C10

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N561QS · CESSNA 680 Citation Latitude · operated by WALKER & DUNLOP LLC, CHARLOTTE PIPE AND FOUNDRY COMPANY, CLBOYS LLC, E&H SALES AND LEASING LLC, GOLDSTEIN GROUP INC, HOLT LOGISTICS CORP

Hex
A72C10
Octal
51626020
Decimal
10,955,792
Country
US
Tail
N561QS
Type
C68A
No current signal · last broadcast 6d ago
Flights observed
69
Distinct callsigns
2
Country
US
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S A72C10.

Country allocation

The ICAO 24-bit address A72C10 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
EJA561 NetJets 65 2026-05-23
N561QS - 4 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-23 N561QS - May 23, 17:35 UTCMay 23, 22:10 UTC4h 36m
2026-05-23 EJA561 PHL → BNA May 23, 15:45 UTCMay 23, 16:05 UTC20m
2026-05-21 EJA561 PHL → BNA May 21, 22:55 UTCMay 22, 00:10 UTC1h 15m
2026-05-21 EJA561 PHL → BNA May 21, 21:00 UTCMay 21, 22:05 UTC1h 5m
2026-05-21 EJA561 PHL → BNA May 21, 00:05 UTCMay 21, 18:45 UTC18h 40m
2026-05-20 EJA561 PHL → BNA May 20, 22:55 UTCMay 21, 18:45 UTC19h 50m
2026-05-20 EJA561 PHL → BNA May 20, 19:50 UTCMay 20, 21:05 UTC1h 15m
2026-05-20 EJA561 PHL → BNA May 20, 14:15 UTCMay 20, 18:25 UTC4h 10m
2026-05-20 EJA561 PHL → BNA May 20, 10:40 UTCMay 20, 12:10 UTC1h 30m
2026-05-19 EJA561 PHL → BNA May 19, 17:25 UTCMay 19, 19:20 UTC1h 55m
2026-05-19 EJA561 PHL → BNA May 19, 15:30 UTCMay 19, 16:25 UTC55m
2026-05-19 EJA561 PHL → BNA May 19, 13:05 UTCMay 19, 13:40 UTC35m
2026-05-19 EJA561 PHL → BNA May 19, 11:15 UTCMay 19, 12:20 UTC1h 5m
2026-05-18 EJA561 PHL → BNA May 18, 23:40 UTCMay 19, 00:55 UTC1h 15m
2026-05-18 EJA561 PHL → BNA May 18, 21:50 UTCMay 18, 23:00 UTC1h 10m
2026-05-18 EJA561 PHL → BNA May 18, 15:50 UTCMay 18, 19:05 UTC3h 14m
2026-05-12 EJA561 PHL → BNA May 12, 21:50 UTCMay 12, 22:45 UTC55m
2026-05-10 EJA561 PHL → BNA May 10, 19:15 UTCMay 10, 20:00 UTC45m
2026-05-10 EJA561 PHL → BNA May 10, 17:30 UTCMay 10, 17:55 UTC25m
2026-05-10 EJA561 PHL → BNA May 10, 02:10 UTCMay 10, 04:09 UTC2h 0m
2026-05-09 EJA561 PHL → BNA May 9, 22:25 UTCMay 10, 00:30 UTC2h 5m
2026-05-09 EJA561 PHL → BNA May 9, 19:40 UTCMay 9, 20:25 UTC45m
2026-05-09 EJA561 PHL → BNA May 9, 18:00 UTCMay 9, 18:20 UTC20m
2026-05-08 EJA561 PHL → BNA May 8, 21:55 UTCMay 9, 03:55 UTC6h 0m
2026-05-08 EJA561 PHL → BNA May 8, 19:40 UTCMay 8, 20:30 UTC50m
2026-05-08 EJA561 PHL → BNA May 8, 16:55 UTCMay 8, 18:10 UTC1h 15m
2026-05-08 EJA561 PHL → BNA May 8, 15:25 UTCMay 8, 16:15 UTC50m
2026-05-07 EJA561 PHL → BNA May 7, 22:35 UTCMay 8, 00:09 UTC1h 35m
2026-05-07 EJA561 PHL → BNA May 7, 20:05 UTCMay 7, 20:40 UTC35m
2026-05-07 EJA561 PHL → BNA May 7, 16:10 UTCMay 7, 18:30 UTC2h 20m
2026-05-06 EJA561 PHL → BNA May 6, 23:00 UTCMay 7, 00:05 UTC1h 5m
2026-05-06 EJA561 PHL → BNA May 6, 21:00 UTCMay 6, 22:10 UTC1h 10m
2026-05-06 EJA561 PHL → BNA May 6, 18:20 UTCMay 6, 19:30 UTC1h 10m
2026-05-06 EJA561 PHL → BNA May 6, 15:30 UTCMay 6, 16:25 UTC55m
2026-05-06 EJA561 PHL → BNA May 6, 03:00 UTCMay 6, 03:30 UTC30m
2026-05-06 EJA561 PHL → BNA May 6, 01:30 UTCMay 6, 02:25 UTC55m
2026-05-05 EJA561 PHL → BNA May 5, 23:25 UTCMay 6, 00:46 UTC1h 20m
2026-05-05 EJA561 PHL → BNA May 5, 17:35 UTCMay 5, 18:25 UTC50m
2026-05-05 EJA561 PHL → BNA May 5, 13:55 UTCMay 5, 15:20 UTC1h 25m
2026-05-04 EJA561 PHL → BNA May 4, 21:45 UTCMay 4, 23:25 UTC1h 40m
2026-05-04 EJA561 PHL → BNA May 4, 18:15 UTCMay 4, 20:50 UTC2h 36m
2026-05-04 EJA561 PHL → BNA May 4, 15:55 UTCMay 4, 16:10 UTC15m
2026-05-04 EJA561 PHL → BNA May 4, 01:00 UTCMay 4, 01:50 UTC50m
2026-05-03 EJA561 PHL → BNA May 3, 21:10 UTCMay 3, 23:50 UTC2h 40m
2026-05-03 EJA561 PHL → BNA May 3, 18:30 UTCMay 3, 19:34 UTC1h 5m
2026-05-03 EJA561 PHL → BNA May 3, 16:09 UTCMay 3, 17:20 UTC1h 10m
2026-05-02 EJA561 PHL → BNA May 2, 17:00 UTCMay 2, 19:25 UTC2h 25m
2026-05-02 EJA561 PHL → BNA May 2, 14:35 UTCMay 2, 15:10 UTC35m
2026-05-02 EJA561 PHL → BNA May 2, 12:20 UTCMay 2, 13:20 UTC1h 0m
2026-05-01 EJA561 PHL → BNA May 1, 15:00 UTCMay 1, 17:15 UTC2h 15m

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 N561QS page for operator, model, and routing details .

Mode-S A72C10 frequently asked

What is Mode-S code A72C10?
A72C10 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N561QS.
Where is Mode-S A72C10 registered?
Mode-S code A72C10 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 A72C10 broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A72C10, octal 51626020, decimal 10,955,792.
What flights does A72C10 operate?
Mode-S A72C10 has broadcast 2 distinct callsigns, including EJA561, N561QS.