Apparatus

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sensors Mode-S transponder

AC02C1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N873PA · PIPER PA-28-140/150/160/180 · operated by AV8 FLIGHT ASSETS LLC

Hex
AC02C1
Octal
53001301
Decimal
11,272,897
Country
US
Tail
N873PA
Type
P28A
No current signal · last broadcast Jul 24, 01:40 UTC
Flights observed
240
Distinct callsigns
1
Country
US
Last broadcast
Jul 24, 01:40 UTC

Last known position

Most recent position reported by Mode-S AC02C1.

Country allocation

The ICAO 24-bit address AC02C1 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
BRW173 - 240 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 BRW173 - Jul 24, 00:20 UTCJul 24, 01:40 UTC1h 20m
2026-07-23 BRW173 - Jul 23, 22:25 UTCJul 23, 23:20 UTC55m
2026-07-23 BRW173 - Jul 23, 19:15 UTCJul 23, 21:15 UTC2h 0m
2026-07-23 BRW173 - Jul 23, 15:25 UTCJul 23, 16:10 UTC45m
2026-07-23 BRW173 - Jul 23, 12:05 UTCJul 23, 13:00 UTC55m
2026-07-22 BRW173 - Jul 22, 22:20 UTCJul 23, 00:40 UTC2h 20m
2026-07-22 BRW173 - Jul 22, 20:15 UTCJul 22, 21:25 UTC1h 10m
2026-07-22 BRW173 FCM → FCM Jul 22, 14:15 UTCJul 22, 14:40 UTC25m
2026-07-22 BRW173 FCM → FCM Jul 22, 13:55 UTCJul 22, 14:10 UTC15m
2026-07-22 BRW173 FCM → FCM Jul 22, 13:30 UTCJul 22, 13:50 UTC20m
2026-07-21 BRW173 - Jul 21, 20:00 UTCJul 21, 20:45 UTC45m
2026-07-21 BRW173 - Jul 21, 18:30 UTCJul 21, 18:55 UTC25m
2026-07-21 BRW173 - Jul 21, 13:35 UTCJul 21, 14:40 UTC1h 5m
2026-07-17 BRW173 - Jul 17, 18:34 UTCJul 17, 19:25 UTC50m
2026-07-17 BRW173 - Jul 17, 15:55 UTCJul 17, 16:49 UTC55m
2026-07-17 BRW173 FCM → FCM Jul 17, 13:35 UTCJul 17, 14:55 UTC1h 20m
2026-07-17 BRW173 FCM → FCM Jul 17, 03:10 UTCJul 17, 03:45 UTC35m
2026-07-17 BRW173 - Jul 17, 02:05 UTCJul 17, 03:05 UTC1h 0m
2026-07-17 BRW173 - Jul 17, 00:20 UTCJul 17, 00:55 UTC35m
2026-07-16 BRW173 FCM → FCM Jul 16, 13:45 UTCJul 16, 15:10 UTC1h 25m
2026-07-16 BRW173 FCM → FCM Jul 16, 03:00 UTCJul 16, 05:00 UTC2h 0m
2026-07-15 BRW173 - Jul 15, 21:55 UTCJul 15, 22:55 UTC1h 0m
2026-07-15 BRW173 - Jul 15, 19:00 UTCJul 15, 20:45 UTC1h 45m
2026-07-15 BRW173 - Jul 15, 17:45 UTCJul 15, 18:15 UTC30m
2026-07-15 BRW173 - Jul 15, 15:30 UTCJul 15, 16:00 UTC30m
2026-07-15 BRW173 FCM → FCM Jul 15, 13:15 UTCJul 15, 14:45 UTC1h 30m
2026-07-15 BRW173 FCM → FCM Jul 15, 03:55 UTCJul 15, 04:25 UTC30m
2026-07-15 BRW173 FCM → FCM Jul 15, 03:25 UTCJul 15, 03:45 UTC20m
2026-07-14 BRW173 FCM → FCM Jul 14, 22:35 UTCJul 15, 00:05 UTC1h 29m
2026-07-14 BRW173 - Jul 14, 17:10 UTCJul 14, 18:25 UTC1h 15m
2026-07-14 BRW173 FCM → FCM Jul 14, 15:00 UTCJul 14, 16:30 UTC1h 30m
2026-07-14 BRW173 FCM → FCM Jul 14, 14:30 UTCJul 14, 14:40 UTC10m
2026-07-13 BRW173 - Jul 13, 22:40 UTCJul 13, 23:30 UTC50m
2026-07-13 BRW173 - Jul 13, 20:20 UTCJul 13, 21:35 UTC1h 15m
2026-07-13 BRW173 - Jul 13, 17:30 UTCJul 13, 19:05 UTC1h 35m
2026-07-13 BRW173 FCM → FCM Jul 13, 13:45 UTCJul 13, 16:30 UTC2h 45m
2026-07-11 BRW173 FCM → FCM Jul 11, 17:45 UTCJul 11, 19:00 UTC1h 15m
2026-07-11 BRW173 - Jul 11, 16:15 UTCJul 11, 16:50 UTC35m
2026-07-11 BRW173 - Jul 11, 14:55 UTCJul 11, 15:35 UTC40m
2026-07-10 BRW173 - Jul 10, 22:10 UTCJul 11, 00:10 UTC2h 0m
2026-07-10 BRW173 - Jul 10, 19:35 UTCJul 10, 21:00 UTC1h 25m
2026-07-10 BRW173 FCM → FCM Jul 10, 18:25 UTCJul 10, 18:45 UTC20m
2026-07-10 BRW173 FCM → FCM Jul 10, 17:30 UTCJul 10, 18:20 UTC50m
2026-07-10 BRW173 FCM → FCM Jul 10, 15:20 UTCJul 10, 16:25 UTC1h 5m
2026-07-09 BRW173 FCM → FCM Jul 9, 22:05 UTCJul 9, 23:20 UTC1h 15m
2026-07-09 BRW173 FCM → FCM Jul 9, 19:50 UTCJul 9, 21:00 UTC1h 10m
2026-07-09 BRW173 FCM → FCM Jul 9, 13:50 UTCJul 9, 15:20 UTC1h 30m
2026-07-09 BRW173 - Jul 9, 00:40 UTCJul 9, 02:10 UTC1h 30m
2026-07-08 BRW173 - Jul 8, 22:00 UTCJul 8, 23:25 UTC1h 25m
2026-07-08 BRW173 - Jul 8, 19:25 UTCJul 8, 20:00 UTC35m

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 N873PA page for operator, model, and routing details .

Mode-S AC02C1 frequently asked

What is Mode-S code AC02C1?
AC02C1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N873PA.
Where is Mode-S AC02C1 registered?
Mode-S code AC02C1 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 AC02C1 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 01:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC02C1, octal 53001301, decimal 11,272,897.
What flights does AC02C1 operate?
Mode-S AC02C1 has broadcast 1 distinct callsign, including BRW173.