Apparatus

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sensors Mode-S transponder

A831C9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N627RV · VANS RV-7 · operated by PICTURE PERFECT LLC

Hex
A831C9
Octal
52030711
Decimal
11,022,793
Country
US
Tail
N627RV
Type
RV7
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
22
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S A831C9.

Country allocation

The ICAO 24-bit address A831C9 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
N627RV - 22 2026-07-26

Recent flights last 22

DateFlightRouteTakeoffLandingDuration
2026-07-26 N627RV - Jul 26, 18:35 UTCJul 26, 20:15 UTC1h 40m
2026-07-26 N627RV - Jul 26, 17:30 UTCJul 26, 17:40 UTC10m
2026-07-14 N627RV - Jul 14, 20:45 UTCJul 14, 21:25 UTC40m
2026-07-06 N627RV - Jul 6, 19:50 UTCJul 6, 20:20 UTC30m
2026-07-05 N627RV - Jul 5, 21:55 UTCJul 5, 22:15 UTC20m
2026-06-20 N627RV PWT → PWT Jun 20, 21:19 UTCJun 20, 22:10 UTC50m
2026-06-20 N627RV - Jun 20, 19:49 UTCJun 20, 20:45 UTC55m
2026-06-20 N627RV - Jun 20, 18:45 UTCJun 20, 18:54 UTC10m
2026-06-20 N627RV PWT → PWT Jun 20, 17:04 UTCJun 20, 17:59 UTC55m
2026-06-14 N627RV - Jun 14, 23:44 UTCJun 15, 01:20 UTC1h 35m
2026-06-14 N627RV - Jun 14, 19:40 UTCJun 14, 19:55 UTC15m
2026-06-12 N627RV PWT → PWT Jun 12, 02:10 UTCJun 12, 02:20 UTC10m
2026-06-08 N627RV - Jun 8, 00:55 UTCJun 8, 01:20 UTC25m
2026-06-07 N627RV - Jun 7, 23:20 UTCJun 8, 00:05 UTC45m
2026-06-07 N627RV PWT → PWT Jun 7, 21:30 UTCJun 7, 21:50 UTC20m
2026-05-24 N627RV - May 24, 23:10 UTCMay 24, 23:20 UTC10m
2026-05-17 N627RV - May 17, 23:15 UTCMay 17, 23:30 UTC15m
2026-05-17 N627RV PWT → PWT May 17, 22:20 UTCMay 17, 22:40 UTC20m
2026-05-12 N627RV PWT → PWT May 12, 19:20 UTCMay 12, 19:35 UTC15m
2026-05-10 N627RV PWT → PWT May 10, 20:00 UTCMay 10, 20:25 UTC25m
2026-05-07 N627RV - May 7, 23:09 UTCMay 7, 23:59 UTC50m
2026-05-04 N627RV - May 4, 02:19 UTCMay 4, 02:39 UTC20m

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 N627RV page for operator, model, and routing details .

Mode-S A831C9 frequently asked

What is Mode-S code A831C9?
A831C9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N627RV.
Where is Mode-S A831C9 registered?
Mode-S code A831C9 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 A831C9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A831C9, octal 52030711, decimal 11,022,793.
What flights does A831C9 operate?
Mode-S A831C9 has broadcast 1 distinct callsign, including N627RV.