Apparatus

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sensors Mode-S transponder

AC8668

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N906KS · operated by KINGSKY FLIGHT ACADEMY LLC

Hex
AC8668
Octal
53103150
Decimal
11,306,600
Country
US
Tail
N906KS
Type
C172
No current signal · last broadcast 1h ago
Flights observed
46
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AC8668.

Country allocation

The ICAO 24-bit address AC8668 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
N7989U - 46 2026-07-18

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-07-18 N7989U - Jul 18, 16:40 UTCJul 18, 17:30 UTC50m
2026-07-18 N7989U - Jul 18, 14:05 UTCJul 18, 14:55 UTC50m
2026-07-17 N7989U - Jul 17, 23:39 UTCJul 18, 00:19 UTC40m
2026-07-17 N7989U - Jul 17, 22:05 UTCJul 17, 22:45 UTC40m
2026-07-17 N7989U - Jul 17, 17:25 UTCJul 17, 18:10 UTC45m
2026-07-17 N7989U - Jul 17, 13:15 UTCJul 17, 14:15 UTC1h 0m
2026-07-17 N7989U - Jul 17, 11:50 UTCJul 17, 12:25 UTC35m
2026-07-16 N7989U - Jul 16, 22:59 UTCJul 16, 23:35 UTC35m
2026-07-16 N7989U - Jul 16, 19:30 UTCJul 16, 20:15 UTC45m
2026-07-16 N7989U - Jul 16, 17:30 UTCJul 16, 18:40 UTC1h 10m
2026-07-16 N7989U - Jul 16, 15:45 UTCJul 16, 16:35 UTC50m
2026-07-16 N7989U - Jul 16, 13:45 UTCJul 16, 14:35 UTC50m
2026-07-16 N7989U - Jul 16, 11:34 UTCJul 16, 12:30 UTC55m
2026-07-15 N7989U - Jul 15, 23:55 UTCJul 16, 00:25 UTC30m
2026-07-15 N7989U - Jul 15, 18:35 UTCJul 15, 19:15 UTC40m
2026-07-15 N7989U - Jul 15, 17:00 UTCJul 15, 17:30 UTC30m
2026-07-15 N7989U - Jul 15, 14:25 UTCJul 15, 15:30 UTC1h 5m
2026-07-15 N7989U - Jul 15, 13:00 UTCJul 15, 13:50 UTC50m
2026-07-14 N7989U - Jul 14, 20:05 UTCJul 14, 20:55 UTC50m
2026-07-14 N7989U - Jul 14, 17:15 UTCJul 14, 17:55 UTC40m
2026-07-14 N7989U - Jul 14, 15:40 UTCJul 14, 16:25 UTC45m
2026-07-14 N7989U - Jul 14, 14:40 UTCJul 14, 15:00 UTC20m
2026-07-14 N7989U - Jul 14, 12:45 UTCJul 14, 13:55 UTC1h 10m
2026-07-13 N7989U - Jul 13, 16:45 UTCJul 13, 17:20 UTC35m
2026-07-13 N7989U - Jul 13, 13:50 UTCJul 13, 14:45 UTC55m
2026-07-13 N7989U - Jul 13, 11:40 UTCJul 13, 12:50 UTC1h 10m
2026-06-30 N7989U - Jun 30, 21:05 UTCJun 30, 21:45 UTC40m
2026-06-30 N7989U - Jun 30, 15:00 UTCJun 30, 15:25 UTC25m
2026-06-30 N7989U - Jun 30, 13:40 UTCJun 30, 14:25 UTC45m
2026-06-29 N7989U - Jun 29, 17:49 UTCJun 29, 18:19 UTC30m
2026-06-29 N7989U - Jun 29, 14:39 UTCJun 29, 15:24 UTC45m
2026-06-29 N7989U - Jun 29, 11:50 UTCJun 29, 12:34 UTC45m
2026-06-28 N7989U - Jun 28, 19:25 UTCJun 28, 19:49 UTC25m
2026-06-28 N7989U - Jun 28, 17:44 UTCJun 28, 18:10 UTC25m
2026-06-27 N7989U - Jun 27, 18:35 UTCJun 27, 18:49 UTC15m
2026-06-27 N7989U - Jun 27, 16:39 UTCJun 27, 16:49 UTC10m
2026-06-27 N7989U - Jun 27, 13:40 UTCJun 27, 13:49 UTC10m
2026-06-27 N7989U - Jun 27, 11:39 UTCJun 27, 12:09 UTC30m
2026-06-27 N7989U - Jun 27, 03:40 UTCJun 27, 04:09 UTC30m
2026-06-26 N7989U - Jun 26, 23:44 UTCJun 27, 00:34 UTC50m
2026-06-25 N7989U - Jun 25, 15:44 UTCJun 25, 16:55 UTC1h 10m
2026-06-25 N7989U - Jun 25, 12:04 UTCJun 25, 13:00 UTC55m
2026-06-24 N7989U - Jun 24, 20:54 UTCJun 24, 21:29 UTC35m
2026-06-24 N7989U - Jun 24, 13:44 UTCJun 24, 14:20 UTC35m
2026-06-24 N7989U - Jun 24, 11:54 UTCJun 24, 12:25 UTC30m
2026-06-23 N7989U - Jun 23, 16:24 UTCJun 23, 16:54 UTC30m

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 N906KS page for operator, model, and routing details .

Mode-S AC8668 frequently asked

What is Mode-S code AC8668?
AC8668 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N906KS.
Where is Mode-S AC8668 registered?
Mode-S code AC8668 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 AC8668 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC8668, octal 53103150, decimal 11,306,600.
What flights does AC8668 operate?
Mode-S AC8668 has broadcast 1 distinct callsign, including N7989U.