Apparatus

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sensors Mode-S transponder

AC6CA9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9YJ · BELL 206 JetRanger · operated by HELICOPTERS INC

Hex
AC6CA9
Octal
53066251
Decimal
11,300,009
Country
US
Tail
N9YJ
Type
B06
No current signal · last broadcast 3h ago
Flights observed
87
Distinct callsigns
1
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S AC6CA9.

Country allocation

The ICAO 24-bit address AC6CA9 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
N9YJ - 87 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N9YJ - Jul 14, 11:00 UTCJul 14, 12:10 UTC1h 10m
2026-07-13 N9YJ - Jul 13, 17:45 UTCJul 13, 18:05 UTC20m
2026-07-13 N9YJ - Jul 13, 13:05 UTCJul 13, 13:50 UTC45m
2026-07-13 N9YJ - Jul 13, 11:00 UTCJul 13, 12:00 UTC1h 0m
2026-07-10 N9YJ - Jul 10, 11:00 UTCJul 10, 12:15 UTC1h 15m
2026-07-09 N9YJ - Jul 9, 15:25 UTCJul 9, 16:55 UTC1h 30m
2026-07-09 N9YJ - Jul 9, 11:00 UTCJul 9, 12:00 UTC1h 0m
2026-07-08 N9YJ - Jul 8, 10:55 UTCJul 8, 12:00 UTC1h 5m
2026-07-07 N9YJ - Jul 7, 11:00 UTCJul 7, 12:20 UTC1h 20m
2026-07-06 N9YJ - Jul 6, 10:55 UTCJul 6, 12:05 UTC1h 10m
2026-07-03 N9YJ - Jul 3, 20:10 UTCJul 3, 21:45 UTC1h 35m
2026-07-02 N9YJ - Jul 2, 11:35 UTCJul 2, 12:35 UTC1h 0m
2026-07-01 N9YJ - Jul 1, 11:00 UTCJul 1, 12:05 UTC1h 5m
2026-06-30 N9YJ - Jun 30, 10:55 UTCJun 30, 12:35 UTC1h 40m
2026-06-29 N9YJ - Jun 29, 10:59 UTCJun 29, 12:05 UTC1h 5m
2026-06-26 N9YJ MWC → MWC Jun 26, 11:00 UTCJun 26, 12:14 UTC1h 15m
2026-06-25 N9YJ - Jun 25, 10:59 UTCJun 25, 11:44 UTC45m
2026-06-24 N9YJ - Jun 24, 10:59 UTCJun 24, 12:04 UTC1h 5m
2026-06-23 N9YJ - Jun 23, 14:19 UTCJun 23, 14:39 UTC20m
2026-06-23 N9YJ - Jun 23, 10:59 UTCJun 23, 12:09 UTC1h 10m
2026-06-18 N9YJ - Jun 18, 11:15 UTCJun 18, 12:05 UTC50m
2026-06-17 N9YJ - Jun 17, 11:00 UTCJun 17, 12:05 UTC1h 5m
2026-06-16 N9YJ - Jun 16, 11:00 UTCJun 16, 12:10 UTC1h 10m
2026-06-15 N9YJ MWC → MWC Jun 15, 11:10 UTCJun 15, 12:05 UTC55m
2026-06-12 N9YJ - Jun 12, 11:00 UTCJun 12, 12:15 UTC1h 15m
2026-06-11 N9YJ - Jun 11, 14:30 UTCJun 11, 15:20 UTC50m
2026-06-11 N9YJ MWC → MWC Jun 11, 11:00 UTCJun 11, 12:05 UTC1h 5m
2026-06-10 N9YJ - Jun 10, 16:30 UTCJun 10, 17:30 UTC1h 0m
2026-06-04 N9YJ - Jun 4, 11:00 UTCJun 4, 12:05 UTC1h 5m
2026-06-03 N9YJ - Jun 3, 13:40 UTCJun 3, 15:15 UTC1h 35m
2026-06-03 N9YJ MWC → MWC Jun 3, 10:55 UTCJun 3, 12:45 UTC1h 50m
2026-06-02 N9YJ MWC → MWC Jun 2, 11:00 UTCJun 2, 12:20 UTC1h 20m
2026-06-01 N9YJ - Jun 1, 19:05 UTCJun 1, 19:50 UTC45m
2026-06-01 N9YJ - Jun 1, 11:00 UTCJun 1, 12:05 UTC1h 5m
2026-05-29 N9YJ - May 29, 13:25 UTCMay 29, 14:20 UTC55m
2026-05-29 N9YJ - May 29, 11:00 UTCMay 29, 12:00 UTC1h 0m
2026-05-28 N9YJ - May 28, 11:00 UTCMay 28, 12:05 UTC1h 5m
2026-05-27 N9YJ - May 27, 11:00 UTCMay 27, 12:10 UTC1h 10m
2026-05-26 N9YJ MWC → MWC May 26, 11:00 UTCMay 26, 12:05 UTC1h 5m
2026-05-22 N9YJ - May 22, 11:05 UTCMay 22, 12:05 UTC1h 0m
2026-05-21 N9YJ - May 21, 15:20 UTCMay 21, 17:20 UTC2h 0m
2026-05-21 N9YJ - May 21, 11:00 UTCMay 21, 12:40 UTC1h 40m
2026-05-21 N9YJ - May 21, 00:10 UTCMay 21, 00:35 UTC25m
2026-05-20 N9YJ - May 20, 18:35 UTCMay 20, 19:00 UTC25m
2026-05-20 N9YJ - May 20, 11:00 UTCMay 20, 12:05 UTC1h 5m
2026-05-19 N9YJ - May 19, 11:00 UTCMay 19, 12:00 UTC1h 0m
2026-05-18 N9YJ - May 18, 11:00 UTCMay 18, 11:45 UTC45m
2026-05-15 N9YJ MWC → MWC May 15, 10:55 UTCMay 15, 12:10 UTC1h 15m
2026-05-14 N9YJ - May 14, 11:01 UTCMay 14, 12:30 UTC1h 30m
2026-05-13 N9YJ - May 13, 18:35 UTCMay 13, 19:40 UTC1h 5m

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 N9YJ page for operator, model, and routing details .

Mode-S AC6CA9 frequently asked

What is Mode-S code AC6CA9?
AC6CA9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9YJ.
Where is Mode-S AC6CA9 registered?
Mode-S code AC6CA9 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 AC6CA9 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC6CA9, octal 53066251, decimal 11,300,009.
What flights does AC6CA9 operate?
Mode-S AC6CA9 has broadcast 1 distinct callsign, including N9YJ.