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sensors Mode-S transponder

AC31B0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N885PC · CIRRUS SR-20 · operated by SOMMER BREEZE LLC

Hex
AC31B0
Octal
53030660
Decimal
11,284,912
Country
US
Tail
N885PC
Type
SR20
No current signal · last broadcast 22h ago
Flights observed
135
Distinct callsigns
1
Country
US
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S AC31B0.

Country allocation

The ICAO 24-bit address AC31B0 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
N885PC - 135 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N885PC - Jul 17, 14:30 UTCJul 17, 15:10 UTC40m
2026-07-17 N885PC - Jul 17, 12:35 UTCJul 17, 13:20 UTC45m
2026-07-16 N885PC - Jul 16, 20:05 UTCJul 16, 20:29 UTC25m
2026-07-16 N885PC - Jul 16, 18:05 UTCJul 16, 18:55 UTC50m
2026-07-15 N885PC - Jul 15, 20:15 UTCJul 15, 21:05 UTC50m
2026-07-14 N885PC - Jul 14, 19:35 UTCJul 14, 19:55 UTC20m
2026-07-13 N885PC - Jul 13, 23:45 UTCJul 14, 00:05 UTC20m
2026-07-13 N885PC - Jul 13, 22:35 UTCJul 13, 22:45 UTC10m
2026-07-13 N885PC - Jul 13, 16:20 UTCJul 13, 16:35 UTC15m
2026-07-13 N885PC - Jul 13, 14:10 UTCJul 13, 14:30 UTC20m
2026-07-12 N885PC - Jul 12, 13:20 UTCJul 12, 13:30 UTC10m
2026-07-11 N885PC - Jul 11, 12:55 UTCJul 11, 13:50 UTC55m
2026-07-10 N885PC - Jul 10, 16:25 UTCJul 10, 16:35 UTC10m
2026-07-10 N885PC - Jul 10, 13:20 UTCJul 10, 13:35 UTC15m
2026-07-10 N885PC - Jul 10, 00:05 UTCJul 10, 00:45 UTC40m
2026-07-09 N885PC - Jul 9, 23:15 UTCJul 9, 23:25 UTC10m
2026-07-09 N885PC - Jul 9, 21:30 UTCJul 9, 21:55 UTC25m
2026-07-09 N885PC - Jul 9, 14:50 UTCJul 9, 15:30 UTC40m
2026-07-09 N885PC - Jul 9, 00:30 UTCJul 9, 00:55 UTC25m
2026-07-08 N885PC - Jul 8, 20:50 UTCJul 8, 23:30 UTC2h 40m
2026-07-08 N885PC - Jul 8, 14:30 UTCJul 8, 14:50 UTC20m
2026-07-07 N885PC - Jul 7, 18:25 UTCJul 7, 21:00 UTC2h 35m
2026-07-07 N885PC - Jul 7, 17:35 UTCJul 7, 17:50 UTC15m
2026-07-06 N885PC - Jul 6, 13:30 UTCJul 6, 15:40 UTC2h 10m
2026-07-06 N885PC - Jul 6, 11:35 UTCJul 6, 12:35 UTC1h 0m
2026-07-06 N885PC - Jul 6, 10:40 UTCJul 6, 10:55 UTC15m
2026-07-03 N885PC - Jul 3, 17:20 UTCJul 3, 17:40 UTC20m
2026-07-03 N885PC - Jul 3, 14:45 UTCJul 3, 15:20 UTC35m
2026-07-03 N885PC - Jul 3, 12:10 UTCJul 3, 13:05 UTC55m
2026-07-02 N885PC - Jul 2, 18:35 UTCJul 2, 19:35 UTC1h 0m
2026-07-02 N885PC - Jul 2, 16:40 UTCJul 2, 17:05 UTC25m
2026-07-02 N885PC - Jul 2, 15:45 UTCJul 2, 15:55 UTC10m
2026-07-01 N885PC - Jul 1, 19:40 UTCJul 1, 20:40 UTC1h 0m
2026-07-01 N885PC - Jul 1, 16:15 UTCJul 1, 16:40 UTC25m
2026-07-01 N885PC - Jul 1, 13:55 UTCJul 1, 14:10 UTC15m
2026-06-30 N885PC - Jun 30, 19:15 UTCJun 30, 19:50 UTC35m
2026-06-30 N885PC - Jun 30, 14:05 UTCJun 30, 14:55 UTC50m
2026-06-29 N885PC - Jun 29, 23:09 UTCJun 29, 23:29 UTC20m
2026-06-29 N885PC - Jun 29, 15:30 UTCJun 29, 16:00 UTC30m
2026-06-28 N885PC - Jun 28, 12:50 UTCJun 28, 13:40 UTC50m
2026-06-27 N885PC - Jun 27, 16:44 UTCJun 27, 17:55 UTC1h 10m
2026-06-26 N885PC - Jun 26, 19:45 UTCJun 26, 20:15 UTC30m
2026-06-26 N885PC - Jun 26, 17:15 UTCJun 26, 18:04 UTC50m
2026-06-26 N885PC - Jun 26, 13:59 UTCJun 26, 15:05 UTC1h 5m
2026-06-25 N885PC - Jun 25, 18:00 UTCJun 25, 18:34 UTC35m
2026-06-24 N885PC - Jun 24, 20:05 UTCJun 24, 21:09 UTC1h 5m
2026-06-23 N885PC - Jun 23, 23:55 UTCJun 24, 01:09 UTC1h 15m
2026-06-23 N885PC - Jun 23, 19:29 UTCJun 23, 20:29 UTC1h 0m
2026-06-23 N885PC - Jun 23, 17:25 UTCJun 23, 17:39 UTC15m
2026-06-12 N885PC - Jun 12, 23:25 UTCJun 12, 23:50 UTC25m

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 N885PC page for operator, model, and routing details .

Mode-S AC31B0 frequently asked

What is Mode-S code AC31B0?
AC31B0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N885PC.
Where is Mode-S AC31B0 registered?
Mode-S code AC31B0 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 AC31B0 broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC31B0, octal 53030660, decimal 11,284,912.
What flights does AC31B0 operate?
Mode-S AC31B0 has broadcast 1 distinct callsign, including N885PC.