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sensors Mode-S transponder

AD6DD2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9643Q · CESSNA 172 Skyhawk · operated by LEADING EDGE FLIGHT ACADEMY LLC

Hex
AD6DD2
Octal
53266722
Decimal
11,365,842
Country
US
Tail
N9643Q
Type
C172
No current signal · last broadcast 10d ago
Flights observed
315
Distinct callsigns
1
Country
US
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S AD6DD2.

Country allocation

The ICAO 24-bit address AD6DD2 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
N9643Q - 315 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N9643Q - Jul 26, 17:50 UTCJul 26, 19:00 UTC1h 10m
2026-07-26 N9643Q - Jul 26, 16:05 UTCJul 26, 17:10 UTC1h 5m
2026-07-26 N9643Q - Jul 26, 14:05 UTCJul 26, 14:50 UTC45m
2026-07-25 N9643Q - Jul 25, 17:00 UTCJul 25, 17:50 UTC50m
2026-07-25 N9643Q - Jul 25, 14:45 UTCJul 25, 16:00 UTC1h 15m
2026-07-24 N9643Q - Jul 24, 19:55 UTCJul 24, 20:25 UTC30m
2026-07-24 N9643Q - Jul 24, 17:55 UTCJul 24, 18:50 UTC55m
2026-07-24 N9643Q - Jul 24, 16:00 UTCJul 24, 16:40 UTC40m
2026-07-24 N9643Q - Jul 24, 14:35 UTCJul 24, 15:10 UTC35m
2026-07-23 N9643Q - Jul 23, 20:15 UTCJul 23, 21:05 UTC50m
2026-07-23 N9643Q - Jul 23, 17:00 UTCJul 23, 18:05 UTC1h 5m
2026-07-23 N9643Q - Jul 23, 15:05 UTCJul 23, 15:55 UTC50m
2026-07-22 N9643Q - Jul 22, 18:55 UTCJul 22, 19:25 UTC30m
2026-07-22 N9643Q - Jul 22, 13:45 UTCJul 22, 14:15 UTC30m
2026-07-20 N9643Q - Jul 20, 23:55 UTCJul 21, 01:05 UTC1h 10m
2026-07-20 N9643Q - Jul 20, 22:05 UTCJul 20, 23:00 UTC55m
2026-07-20 N9643Q - Jul 20, 19:45 UTCJul 20, 20:55 UTC1h 10m
2026-07-20 N9643Q - Jul 20, 16:55 UTCJul 20, 17:20 UTC25m
2026-07-20 N9643Q - Jul 20, 14:50 UTCJul 20, 15:40 UTC50m
2026-07-20 N9643Q - Jul 20, 13:30 UTCJul 20, 14:00 UTC30m
2026-07-20 N9643Q - Jul 20, 02:55 UTCJul 20, 04:05 UTC1h 10m
2026-07-19 N9643Q - Jul 19, 20:50 UTCJul 19, 21:45 UTC55m
2026-07-19 N9643Q - Jul 19, 19:10 UTCJul 19, 20:00 UTC50m
2026-07-19 N9643Q - Jul 19, 16:50 UTCJul 19, 18:00 UTC1h 10m
2026-07-19 N9643Q - Jul 19, 15:00 UTCJul 19, 15:55 UTC55m
2026-07-18 N9643Q - Jul 18, 15:10 UTCJul 18, 16:00 UTC50m
2026-07-11 N9643Q - Jul 11, 16:00 UTCJul 11, 16:55 UTC55m
2026-07-10 N9643Q - Jul 10, 19:00 UTCJul 10, 20:15 UTC1h 15m
2026-07-09 N9643Q - Jul 9, 17:05 UTCJul 9, 20:00 UTC2h 55m
2026-07-09 N9643Q - Jul 9, 14:55 UTCJul 9, 16:05 UTC1h 10m
2026-07-09 N9643Q - Jul 9, 13:15 UTCJul 9, 14:05 UTC50m
2026-07-08 N9643Q - Jul 8, 19:00 UTCJul 8, 20:00 UTC1h 0m
2026-07-08 N9643Q - Jul 8, 16:50 UTCJul 8, 18:00 UTC1h 10m
2026-07-08 N9643Q - Jul 8, 14:55 UTCJul 8, 15:45 UTC50m
2026-07-07 N9643Q - Jul 7, 20:40 UTCJul 7, 21:30 UTC50m
2026-07-07 N9643Q - Jul 7, 17:45 UTCJul 7, 18:40 UTC55m
2026-07-07 N9643Q - Jul 7, 15:05 UTCJul 7, 16:05 UTC1h 0m
2026-07-07 N9643Q - Jul 7, 13:00 UTCJul 7, 13:55 UTC55m
2026-07-07 N9643Q - Jul 7, 06:15 UTCJul 7, 06:25 UTC10m
2026-07-07 N9643Q - Jul 7, 04:50 UTCJul 7, 05:05 UTC15m
2026-07-06 N9643Q - Jul 6, 17:00 UTCJul 6, 17:15 UTC15m
2026-07-06 N9643Q - Jul 6, 16:10 UTCJul 6, 16:20 UTC10m
2026-07-06 N9643Q - Jul 6, 14:20 UTCJul 6, 15:10 UTC50m
2026-07-05 N9643Q - Jul 5, 23:55 UTCJul 6, 01:10 UTC1h 15m
2026-07-05 N9643Q - Jul 5, 21:05 UTCJul 5, 21:45 UTC40m
2026-07-05 N9643Q - Jul 5, 18:55 UTCJul 5, 20:15 UTC1h 20m
2026-07-05 N9643Q - Jul 5, 16:45 UTCJul 5, 17:55 UTC1h 10m
2026-07-05 N9643Q - Jul 5, 15:05 UTCJul 5, 15:20 UTC15m
2026-07-05 N9643Q - Jul 5, 13:50 UTCJul 5, 14:05 UTC15m
2026-07-05 N9643Q - Jul 5, 05:00 UTCJul 5, 05:45 UTC45m

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 N9643Q page for operator, model, and routing details .

Mode-S AD6DD2 frequently asked

What is Mode-S code AD6DD2?
AD6DD2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9643Q.
Where is Mode-S AD6DD2 registered?
Mode-S code AD6DD2 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 AD6DD2 broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD6DD2, octal 53266722, decimal 11,365,842.
What flights does AD6DD2 operate?
Mode-S AD6DD2 has broadcast 1 distinct callsign, including N9643Q.