Apparatus

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sensors Mode-S transponder

A6909C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N522CP · CIRRUS SR-22 · operated by REGISTRATION PENDING

Hex
A6909C
Octal
51510234
Decimal
10,915,996
Country
US
Tail
N522CP
Type
SR22
No current signal · last broadcast Jul 23, 18:20 UTC
Flights observed
42
Distinct callsigns
1
Country
US
Last broadcast
Jul 23, 18:20 UTC

Last known position

Most recent position reported by Mode-S A6909C.

Country allocation

The ICAO 24-bit address A6909C 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
N522CP - 42 2026-07-23

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-07-23 N522CP - Jul 23, 17:25 UTCJul 23, 18:20 UTC55m
2026-07-23 N522CP RBK → HII Jul 23, 16:00 UTCJul 23, 17:00 UTC1h 0m
2026-07-18 N522CP - Jul 18, 17:25 UTCJul 18, 18:50 UTC1h 25m
2026-07-18 N522CP - Jul 18, 15:30 UTCJul 18, 16:40 UTC1h 10m
2026-07-15 N522CP - Jul 15, 22:05 UTCJul 15, 23:25 UTC1h 20m
2026-07-15 N522CP - Jul 15, 19:50 UTCJul 15, 21:05 UTC1h 15m
2026-07-06 N522CP - Jul 6, 02:20 UTCJul 6, 03:20 UTC1h 0m
2026-07-06 N522CP - Jul 6, 00:50 UTCJul 6, 01:45 UTC55m
2026-07-03 N522CP - Jul 3, 00:00 UTCJul 3, 01:00 UTC1h 0m
2026-07-02 N522CP - Jul 2, 22:30 UTCJul 2, 23:30 UTC1h 0m
2026-06-28 N522CP HII → RBK Jun 28, 18:29 UTCJun 28, 19:34 UTC1h 5m
2026-06-28 N522CP RBK → HII Jun 28, 17:00 UTCJun 28, 17:55 UTC55m
2026-06-26 N522CP - Jun 26, 17:09 UTCJun 26, 18:15 UTC1h 5m
2026-06-26 N522CP - Jun 26, 16:05 UTCJun 26, 16:54 UTC50m
2026-06-11 N522CP SFO → RBK Jun 11, 22:35 UTCJun 12, 00:50 UTC2h 16m
2026-06-11 N522CP - Jun 11, 16:35 UTCJun 11, 19:00 UTC2h 25m
2026-05-22 N522CP - May 22, 17:10 UTCMay 22, 18:10 UTC1h 0m
2026-05-22 N522CP - May 22, 15:40 UTCMay 22, 16:45 UTC1h 5m
2026-05-17 N522CP HII → RBK May 17, 19:45 UTCMay 17, 20:50 UTC1h 5m
2026-05-17 N522CP - May 17, 18:35 UTCMay 17, 19:30 UTC55m
2026-05-16 N522CP - May 16, 00:15 UTCMay 16, 01:15 UTC1h 0m
2026-05-15 N522CP - May 15, 22:45 UTCMay 15, 23:45 UTC1h 0m
2026-05-11 N522CP - May 11, 16:15 UTCMay 11, 16:35 UTC20m
2026-05-08 N522CP - May 8, 21:45 UTCMay 8, 22:25 UTC40m
2026-05-08 N522CP - May 8, 20:35 UTCMay 8, 21:30 UTC55m
2026-05-07 N522CP - May 7, 21:25 UTCMay 7, 21:40 UTC15m
2026-05-01 N522CP - May 1, 19:10 UTCMay 1, 19:30 UTC20m
2026-05-01 N522CP HSH → RBK May 1, 02:00 UTCMay 1, 03:00 UTC1h 0m
2026-04-30 N522CP RBK → HSH Apr 30, 21:45 UTCApr 30, 23:05 UTC1h 20m
2026-04-26 N522CP HII → RBK Apr 26, 20:30 UTCApr 26, 21:45 UTC1h 15m
2026-04-26 N522CP RBK → HII Apr 26, 18:45 UTCApr 26, 19:40 UTC55m
2026-04-26 N522CP HII → RBK Apr 26, 17:00 UTCApr 26, 18:10 UTC1h 10m
2026-04-24 N522CP - Apr 24, 15:05 UTCApr 24, 16:00 UTC55m
2026-04-22 N522CP - Apr 22, 22:45 UTCApr 22, 23:45 UTC1h 0m
2026-04-22 N522CP - Apr 22, 21:30 UTCApr 22, 22:40 UTC1h 10m
2026-04-21 N522CP - Apr 21, 17:40 UTCApr 21, 17:55 UTC15m
2026-04-21 N522CP - Apr 21, 16:40 UTCApr 21, 16:55 UTC15m
2026-04-21 N522CP - Apr 21, 16:10 UTCApr 21, 16:15 UTC5m
2026-04-21 N522CP - Apr 21, 15:15 UTCApr 21, 15:40 UTC25m
2026-04-12 N522CP - Apr 12, 19:05 UTCApr 12, 20:00 UTC55m
2026-04-12 N522CP - Apr 12, 18:05 UTCApr 12, 18:55 UTC50m
2026-04-12 N522CP - Apr 12, 17:15 UTCApr 12, 17:25 UTC10m

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 N522CP page for operator, model, and routing details .

Mode-S A6909C frequently asked

What is Mode-S code A6909C?
A6909C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N522CP.
Where is Mode-S A6909C registered?
Mode-S code A6909C 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 A6909C broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 18:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6909C, octal 51510234, decimal 10,915,996.
What flights does A6909C operate?
Mode-S A6909C has broadcast 1 distinct callsign, including N522CP.