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 12h ago
Flights observed
153
Distinct callsigns
2
Country
US
Last broadcast
12h 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 NetJets 147 2026-05-29
N945QS - 6 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA945 CGF → OXC May 29, 16:10 UTCMay 29, 17:15 UTC1h 5m
2026-05-29 EJA945 CGF → OXC May 29, 12:00 UTCMay 29, 12:40 UTC40m
2026-05-28 EJA945 CGF → OXC May 28, 22:50 UTCMay 29, 00:25 UTC1h 35m
2026-05-28 EJA945 CGF → OXC May 28, 18:15 UTCMay 28, 21:15 UTC3h 0m
2026-05-28 EJA945 CGF → OXC May 28, 02:00 UTCMay 28, 02:45 UTC45m
2026-05-28 EJA945 CGF → OXC May 28, 00:10 UTCMay 28, 01:10 UTC1h 0m
2026-05-27 EJA945 CGF → OXC May 27, 18:05 UTCMay 27, 18:50 UTC45m
2026-05-26 EJA945 CGF → OXC May 26, 23:19 UTCMay 26, 23:39 UTC20m
2026-05-26 EJA945 CGF → OXC May 26, 17:04 UTCMay 26, 21:00 UTC3h 55m
2026-05-26 EJA945 CGF → OXC May 26, 15:14 UTCMay 26, 16:10 UTC55m
2026-05-26 EJA945 CGF → OXC May 26, 11:44 UTCMay 26, 13:40 UTC1h 55m
2026-05-25 EJA945 CGF → OXC May 25, 21:49 UTCMay 25, 22:15 UTC25m
2026-05-25 EJA945 CGF → OXC May 25, 19:20 UTCMay 25, 20:45 UTC1h 25m
2026-05-25 EJA945 CGF → OXC May 25, 16:20 UTCMay 25, 17:10 UTC50m
2026-05-23 EJA945 CGF → OXC May 23, 21:30 UTCMay 23, 22:30 UTC1h 0m
2026-05-23 EJA945 CGF → OXC May 23, 18:00 UTCMay 23, 20:05 UTC2h 5m
2026-05-23 EJA945 CGF → OXC May 23, 15:10 UTCMay 23, 17:05 UTC1h 55m
2026-05-23 EJA945 CGF → OXC May 23, 00:30 UTCMay 23, 00:55 UTC25m
2026-05-22 EJA945 CGF → OXC May 22, 20:45 UTCMay 22, 23:10 UTC2h 25m
2026-05-22 EJA945 CGF → OXC May 22, 14:10 UTCMay 22, 18:20 UTC4h 10m
2026-05-21 EJA945 CGF → OXC May 21, 23:50 UTCMay 22, 01:10 UTC1h 20m
2026-05-21 EJA945 CGF → OXC May 21, 16:35 UTCMay 21, 19:10 UTC2h 35m
2026-05-21 EJA945 CGF → OXC May 21, 13:20 UTCMay 21, 15:25 UTC2h 5m
2026-05-20 EJA945 CGF → OXC May 20, 22:15 UTCMay 20, 23:45 UTC1h 30m
2026-05-20 EJA945 CGF → OXC May 20, 19:50 UTCMay 20, 20:45 UTC55m
2026-05-20 EJA945 CGF → OXC May 20, 18:15 UTCMay 20, 19:10 UTC55m
2026-05-20 EJA945 CGF → OXC May 20, 17:10 UTCMay 20, 17:35 UTC25m
2026-05-20 EJA945 CGF → OXC May 20, 13:45 UTCMay 20, 15:00 UTC1h 15m
2026-05-19 EJA945 CGF → OXC May 19, 23:50 UTCMay 20, 01:20 UTC1h 30m
2026-05-19 EJA945 CGF → OXC May 19, 18:05 UTCMay 19, 18:55 UTC50m
2026-05-19 EJA945 CGF → OXC May 19, 14:10 UTCMay 19, 15:05 UTC55m
2026-05-18 EJA945 CGF → OXC May 18, 21:10 UTCMay 18, 21:55 UTC45m
2026-05-18 EJA945 CGF → OXC May 18, 19:25 UTCMay 18, 20:10 UTC45m
2026-05-18 EJA945 CGF → OXC May 18, 16:55 UTCMay 18, 18:10 UTC1h 15m
2026-05-18 EJA945 CGF → OXC May 18, 11:50 UTCMay 18, 13:30 UTC1h 40m
2026-05-17 EJA945 CGF → OXC May 17, 22:30 UTCMay 17, 23:05 UTC35m
2026-05-17 EJA945 CGF → OXC May 17, 20:55 UTCMay 17, 21:45 UTC50m
2026-05-17 EJA945 CGF → OXC May 17, 18:40 UTCMay 17, 19:10 UTC30m
2026-05-17 EJA945 CGF → OXC May 17, 14:25 UTCMay 17, 17:45 UTC3h 20m
2026-05-16 EJA945 CGF → OXC May 16, 20:10 UTCMay 16, 20:25 UTC15m
2026-05-16 EJA945 CGF → OXC May 16, 16:00 UTCMay 16, 19:15 UTC3h 15m
2026-05-16 EJA945 CGF → OXC May 16, 14:51 UTCMay 16, 15:01 UTC10m
2026-05-15 EJA945 CGF → OXC May 15, 21:15 UTCMay 15, 23:50 UTC2h 35m
2026-05-15 EJA945 CGF → OXC May 15, 19:00 UTCMay 15, 19:20 UTC20m
2026-05-15 EJA945 CGF → OXC May 15, 15:10 UTCMay 15, 17:45 UTC2h 35m
2026-05-15 EJA945 CGF → OXC May 15, 12:10 UTCMay 15, 13:50 UTC1h 40m
2026-05-14 EJA945 CGF → OXC May 14, 22:00 UTCMay 14, 23:00 UTC1h 0m
2026-05-14 EJA945 CGF → OXC May 14, 18:40 UTCMay 14, 20:05 UTC1h 25m
2026-05-14 EJA945 CGF → OXC May 14, 14:45 UTCMay 14, 15:35 UTC50m
2026-05-14 EJA945 CGF → OXC May 14, 12:20 UTCMay 14, 13:45 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 12h 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.