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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 Jul 25, 21:00 UTC
Flights observed
293
Distinct callsigns
2
Country
US
Last broadcast
Jul 25, 21:00 UTC

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 NetJets 280 2026-07-22
N945QS - 13 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N945QS - Jul 25, 19:35 UTCJul 25, 20:15 UTC40m
2026-07-23 N945QS - Jul 23, 00:10 UTCJul 23, 01:05 UTC55m
2026-07-22 EJA945 CGF → OXC Jul 22, 21:30 UTCJul 22, 22:10 UTC40m
2026-07-22 EJA945 CGF → OXC Jul 22, 20:20 UTCJul 22, 20:45 UTC25m
2026-07-22 EJA945 CGF → OXC Jul 22, 18:20 UTCJul 22, 18:35 UTC15m
2026-07-22 EJA945 CGF → OXC Jul 22, 17:15 UTCJul 22, 17:45 UTC30m
2026-07-20 EJA945 CGF → OXC Jul 20, 00:10 UTCJul 20, 01:20 UTC1h 10m
2026-07-19 EJA945 CGF → OXC Jul 19, 21:35 UTCJul 19, 22:50 UTC1h 15m
2026-07-19 EJA945 CGF → OXC Jul 19, 17:15 UTCJul 19, 20:40 UTC3h 25m
2026-07-19 EJA945 CGF → OXC Jul 19, 14:35 UTCJul 19, 16:25 UTC1h 50m
2026-07-18 EJA945 CGF → OXC Jul 18, 18:00 UTCJul 18, 18:30 UTC30m
2026-07-18 EJA945 CGF → OXC Jul 18, 16:10 UTCJul 18, 16:30 UTC20m
2026-07-18 EJA945 CGF → OXC Jul 18, 14:25 UTCJul 18, 14:55 UTC30m
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

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 Jul 25, 21:00 UTC.
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.