Apparatus

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sensors Mode-S transponder

AD212A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N945QS · CESSNA 680 Citation Latitude · operated by COLLEGE STREET INVESTORS LLC, RENAUD ANNETTE, KRIZEK CURTIS A TRUSTEE, KIRK GARRETT JR, KIRK CLAY K, GRAYBAR ELECTRIC CO INC

Hex
AD212A
Octal
53220452
Decimal
11,346,218
Country
US
Tail
N945QS
Type
C68A
No current signal · last broadcast 1d ago
Flights observed
280
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AD212A.

Country allocation

The ICAO 24-bit address AD212A 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
EJA945 - 269 2026-07-12
N945QS - 11 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 EJA945 - Jul 12, 19:10 UTCJul 12, 20:15 UTC1h 5m
2026-07-12 EJA945 - Jul 12, 16:55 UTCJul 12, 17:55 UTC1h 0m
2026-07-12 EJA945 - Jul 12, 14:01 UTCJul 12, 14:55 UTC55m
2026-07-11 EJA945 - Jul 11, 17:35 UTCJul 11, 19:45 UTC2h 10m
2026-07-10 EJA945 - Jul 10, 22:45 UTCJul 10, 23:35 UTC50m
2026-07-10 EJA945 - Jul 10, 19:50 UTCJul 10, 20:50 UTC1h 0m
2026-07-10 EJA945 - Jul 10, 18:10 UTCJul 10, 19:05 UTC55m
2026-07-10 EJA945 - Jul 10, 16:15 UTCJul 10, 16:55 UTC40m
2026-07-10 EJA945 - Jul 10, 13:00 UTCJul 10, 14:35 UTC1h 35m
2026-07-09 EJA945 - Jul 9, 17:30 UTCJul 9, 20:00 UTC2h 30m
2026-07-09 EJA945 - Jul 9, 15:15 UTCJul 9, 16:15 UTC1h 0m
2026-07-09 EJA945 - Jul 9, 13:45 UTCJul 9, 14:25 UTC40m
2026-07-08 EJA945 TIL → MSP Jul 8, 20:00 UTCJul 8, 22:10 UTC2h 10m
2026-07-08 EJA945 - Jul 8, 15:20 UTCJul 8, 19:00 UTC3h 40m
2026-07-07 EJA945 CGF → OXC Jul 7, 18:10 UTCJul 7, 20:05 UTC1h 55m
2026-07-07 EJA945 CGF → OXC Jul 7, 15:50 UTCJul 7, 16:25 UTC35m
2026-07-07 EJA945 CGF → OXC Jul 7, 00:20 UTCJul 7, 02:50 UTC2h 30m
2026-07-06 EJA945 CGF → OXC Jul 6, 17:30 UTCJul 6, 19:40 UTC2h 10m
2026-07-06 EJA945 CGF → OXC Jul 6, 15:50 UTCJul 6, 16:00 UTC10m
2026-07-05 EJA945 CGF → OXC Jul 5, 23:10 UTCJul 5, 23:45 UTC35m
2026-07-05 EJA945 CGF → OXC Jul 5, 16:50 UTCJul 5, 18:35 UTC1h 45m
2026-07-05 EJA945 CGF → OXC Jul 5, 11:50 UTCJul 5, 13:30 UTC1h 40m
2026-07-04 EJA945 CGF → OXC Jul 4, 20:20 UTCJul 4, 21:05 UTC45m
2026-07-04 EJA945 CGF → OXC Jul 4, 18:15 UTCJul 4, 19:15 UTC1h 0m
2026-07-04 EJA945 CGF → OXC Jul 4, 16:10 UTCJul 4, 16:55 UTC45m
2026-07-04 EJA945 CGF → OXC Jul 4, 13:30 UTCJul 4, 14:55 UTC1h 25m
2026-07-04 EJA945 CGF → OXC Jul 4, 12:10 UTCJul 4, 12:40 UTC30m
2026-07-03 EJA945 CGF → OXC Jul 3, 14:35 UTCJul 3, 15:20 UTC45m
2026-07-02 EJA945 CGF → OXC Jul 2, 22:50 UTCJul 3, 00:45 UTC1h 55m
2026-07-02 EJA945 CGF → OXC Jul 2, 21:00 UTCJul 2, 22:10 UTC1h 10m
2026-07-02 EJA945 CGF → OXC Jul 2, 16:30 UTCJul 2, 18:50 UTC2h 20m
2026-07-02 EJA945 CGF → OXC Jul 2, 13:40 UTCJul 2, 15:00 UTC1h 20m
2026-07-01 EJA945 CGF → OXC Jul 1, 22:45 UTCJul 1, 23:15 UTC30m
2026-07-01 EJA945 CGF → OXC Jul 1, 21:40 UTCJul 1, 22:10 UTC30m
2026-07-01 EJA945 CGF → OXC Jul 1, 17:45 UTCJul 1, 19:25 UTC1h 40m
2026-07-01 EJA945 CGF → OXC Jul 1, 15:55 UTCJul 1, 16:45 UTC50m
2026-07-01 EJA945 CGF → OXC Jul 1, 12:35 UTCJul 1, 14:00 UTC1h 25m
2026-06-30 EJA945 CGF → OXC Jun 30, 19:00 UTCJun 30, 20:30 UTC1h 30m
2026-06-30 EJA945 CGF → OXC Jun 30, 17:15 UTCJun 30, 18:10 UTC55m
2026-06-30 EJA945 CGF → OXC Jun 30, 14:35 UTCJun 30, 16:30 UTC1h 55m
2026-06-29 EJA945 CGF → OXC Jun 29, 19:20 UTCJun 29, 20:04 UTC45m
2026-06-29 EJA945 CGF → OXC Jun 29, 16:25 UTCJun 29, 18:14 UTC1h 50m
2026-06-29 EJA945 CGF → OXC Jun 29, 13:54 UTCJun 29, 14:44 UTC50m
2026-06-29 EJA945 CGF → OXC Jun 29, 12:09 UTCJun 29, 13:09 UTC1h 0m
2026-06-28 EJA945 CGF → OXC Jun 28, 18:05 UTCJun 28, 20:04 UTC2h 0m
2026-06-28 EJA945 CGF → OXC Jun 28, 16:05 UTCJun 28, 16:39 UTC35m
2026-06-28 EJA945 CGF → OXC Jun 28, 14:34 UTCJun 28, 15:14 UTC40m
2026-06-27 EJA945 CGF → OXC Jun 27, 19:24 UTCJun 27, 20:39 UTC1h 15m
2026-06-27 N945QS - Jun 27, 14:35 UTCJun 27, 16:14 UTC1h 40m
2026-06-26 N945QS - Jun 26, 18:34 UTCJun 27, 16:14 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 N945QS page for operator, model, and routing details .

Mode-S AD212A frequently asked

What is Mode-S code AD212A?
AD212A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N945QS.
Where is Mode-S AD212A registered?
Mode-S code AD212A 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 AD212A broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD212A, octal 53220452, decimal 11,346,218.
What flights does AD212A operate?
Mode-S AD212A has broadcast 2 distinct callsigns, including EJA945, N945QS.