Apparatus

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sensors Mode-S transponder

A9ADCA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7223Q · CESSNA 172 Skyhawk · operated by BUIQUI AEROSPACE CORP

Hex
A9ADCA
Octal
52326712
Decimal
11,120,074
Country
US
Tail
N7223Q
Type
C172
No current signal · last broadcast Jul 25, 22:20 UTC
Flights observed
90
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 22:20 UTC

Last known position

Most recent position reported by Mode-S A9ADCA.

Country allocation

The ICAO 24-bit address A9ADCA 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 1 distinct

Callsign Airline Flights Last seen
N7223Q - 90 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N7223Q SIG → SIG Jul 25, 21:20 UTCJul 25, 22:20 UTC1h 0m
2026-07-25 N7223Q - Jul 25, 15:40 UTCJul 25, 15:50 UTC10m
2026-07-25 N7223Q - Jul 25, 14:30 UTCJul 25, 14:55 UTC25m
2026-07-24 N7223Q - Jul 24, 16:30 UTCJul 24, 16:45 UTC15m
2026-07-24 N7223Q - Jul 24, 15:40 UTCJul 24, 15:50 UTC10m
2026-07-24 N7223Q - Jul 24, 14:30 UTCJul 24, 14:40 UTC10m
2026-07-24 N7223Q - Jul 24, 12:30 UTCJul 24, 12:50 UTC20m
2026-07-24 N7223Q - Jul 24, 11:40 UTCJul 24, 11:50 UTC10m
2026-07-23 N7223Q - Jul 23, 20:30 UTCJul 23, 20:40 UTC10m
2026-07-23 N7223Q - Jul 23, 19:40 UTCJul 23, 19:50 UTC10m
2026-07-23 N7223Q - Jul 23, 18:15 UTCJul 23, 18:55 UTC40m
2026-07-23 N7223Q - Jul 23, 17:30 UTCJul 23, 17:40 UTC10m
2026-07-23 N7223Q - Jul 23, 15:40 UTCJul 23, 15:50 UTC10m
2026-07-23 N7223Q SIG → SIG Jul 23, 13:35 UTCJul 23, 13:50 UTC15m
2026-07-22 N7223Q - Jul 22, 00:20 UTCJul 22, 00:30 UTC10m
2026-07-15 N7223Q - Jul 15, 15:40 UTCJul 15, 15:50 UTC10m
2026-06-30 N7223Q - Jun 30, 13:45 UTCJun 30, 14:05 UTC20m
2026-06-26 N7223Q - Jun 26, 17:19 UTCJun 26, 17:29 UTC10m
2026-06-26 N7223Q - Jun 26, 13:45 UTCJun 26, 14:39 UTC55m
2026-06-26 N7223Q SIG → SIG Jun 26, 11:45 UTCJun 26, 12:39 UTC55m
2026-06-25 N7223Q - Jun 25, 20:39 UTCJun 25, 21:50 UTC1h 10m
2026-06-23 N7223Q - Jun 23, 17:44 UTCJun 23, 18:50 UTC1h 5m
2026-06-23 N7223Q - Jun 23, 15:40 UTCJun 23, 16:09 UTC30m
2026-06-18 N7223Q - Jun 18, 11:50 UTCJun 18, 12:40 UTC50m
2026-06-17 N7223Q - Jun 17, 17:05 UTCJun 17, 17:40 UTC35m
2026-06-17 N7223Q - Jun 17, 14:20 UTCJun 17, 14:30 UTC10m
2026-06-17 N7223Q - Jun 17, 12:30 UTCJun 17, 12:40 UTC10m
2026-06-16 N7223Q - Jun 16, 18:39 UTCJun 16, 19:05 UTC25m
2026-06-16 N7223Q - Jun 16, 16:15 UTCJun 16, 17:00 UTC45m
2026-06-16 N7223Q - Jun 16, 13:50 UTCJun 16, 14:45 UTC55m
2026-06-15 N7223Q - Jun 15, 20:34 UTCJun 15, 20:45 UTC10m
2026-06-15 N7223Q - Jun 15, 19:25 UTCJun 15, 19:35 UTC10m
2026-06-15 N7223Q - Jun 15, 13:40 UTCJun 15, 14:40 UTC1h 0m
2026-06-12 N7223Q - Jun 12, 14:50 UTCJun 12, 15:15 UTC25m
2026-06-11 N7223Q - Jun 11, 12:30 UTCJun 11, 12:50 UTC20m
2026-06-11 N7223Q - Jun 11, 11:40 UTCJun 11, 11:55 UTC15m
2026-06-10 N7223Q - Jun 10, 20:55 UTCJun 10, 21:40 UTC45m
2026-06-10 N7223Q - Jun 10, 13:35 UTCJun 10, 14:40 UTC1h 5m
2026-06-10 N7223Q - Jun 10, 11:20 UTCJun 10, 12:10 UTC50m
2026-06-09 N7223Q - Jun 9, 15:30 UTCJun 9, 15:40 UTC10m
2026-06-09 N7223Q - Jun 9, 13:35 UTCJun 9, 14:25 UTC50m
2026-06-09 N7223Q SIG → SIG Jun 9, 11:30 UTCJun 9, 12:15 UTC45m
2026-06-08 N7223Q SIG → SIG Jun 8, 18:45 UTCJun 8, 19:45 UTC1h 0m
2026-06-08 N7223Q - Jun 8, 14:50 UTCJun 8, 15:00 UTC10m
2026-06-08 N7223Q - Jun 8, 14:05 UTCJun 8, 14:20 UTC15m
2026-06-08 N7223Q - Jun 8, 11:30 UTCJun 8, 12:35 UTC1h 5m
2026-06-06 N7223Q - Jun 6, 13:49 UTCJun 6, 14:45 UTC55m
2026-06-06 N7223Q - Jun 6, 11:35 UTCJun 6, 12:40 UTC1h 5m
2026-06-05 N7223Q SIG → SIG Jun 5, 21:00 UTCJun 5, 21:55 UTC55m
2026-06-05 N7223Q - Jun 5, 18:40 UTCJun 5, 18:50 UTC10m

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 N7223Q page for operator, model, and routing details .

Mode-S A9ADCA frequently asked

What is Mode-S code A9ADCA?
A9ADCA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7223Q.
Where is Mode-S A9ADCA registered?
Mode-S code A9ADCA 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 A9ADCA broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 22:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9ADCA, octal 52326712, decimal 11,120,074.
What flights does A9ADCA operate?
Mode-S A9ADCA has broadcast 1 distinct callsign, including N7223Q.