Apparatus

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sensors Mode-S transponder

AC1613

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N878WS · PIPER PA-28-140/150/160/180 · operated by WALLACE STATE COMMUNITY COLLEGE

Hex
AC1613
Octal
53013023
Decimal
11,277,843
Country
US
Tail
N878WS
Type
P28A
No current signal · last broadcast 1d ago
Flights observed
54
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC1613.

Country allocation

The ICAO 24-bit address AC1613 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
N878WS - 54 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 N878WS - May 28, 15:50 UTCMay 28, 16:50 UTC1h 0m
2026-05-11 N878WS - May 11, 14:50 UTCMay 11, 16:10 UTC1h 20m
2026-05-08 N878WS - May 8, 19:15 UTCMay 8, 21:05 UTC1h 50m
2026-05-05 N878WS - May 5, 20:30 UTCMay 5, 22:50 UTC2h 20m
2026-05-04 N878WS - May 4, 21:50 UTCMay 5, 01:10 UTC3h 20m
2026-05-04 N878WS - May 4, 01:10 UTCMay 4, 02:19 UTC1h 10m
2026-05-03 N878WS - May 3, 22:00 UTCMay 3, 23:15 UTC1h 15m
2026-05-03 N878WS - May 3, 17:29 UTCMay 3, 18:05 UTC35m
2026-05-03 N878WS - May 3, 01:00 UTCMay 3, 01:30 UTC30m
2026-05-02 N878WS - May 2, 23:30 UTCMay 3, 00:30 UTC1h 0m
2026-05-02 N878WS - May 2, 21:30 UTCMay 2, 22:10 UTC40m
2026-05-02 N878WS - May 2, 20:05 UTCMay 2, 20:45 UTC40m
2026-05-01 N878WS - May 1, 21:05 UTCMay 1, 21:50 UTC45m
2026-05-01 N878WS - May 1, 18:05 UTCMay 1, 19:50 UTC1h 45m
2026-04-30 N878WS - Apr 30, 22:05 UTCApr 30, 22:40 UTC35m
2026-04-30 N878WS - Apr 30, 20:55 UTCApr 30, 21:30 UTC35m
2026-04-30 N878WS - Apr 30, 16:25 UTCApr 30, 17:35 UTC1h 10m
2026-04-30 N878WS - Apr 30, 14:20 UTCApr 30, 15:20 UTC1h 0m
2026-04-29 N878WS - Apr 29, 19:15 UTCApr 29, 20:50 UTC1h 35m
2026-04-29 N878WS - Apr 29, 15:40 UTCApr 29, 16:50 UTC1h 10m
2026-04-27 N878WS - Apr 27, 21:30 UTCApr 27, 23:10 UTC1h 40m
2026-04-24 N878WS - Apr 24, 19:40 UTCApr 24, 20:00 UTC20m
2026-04-24 N878WS - Apr 24, 18:55 UTCApr 24, 19:05 UTC10m
2026-04-24 N878WS - Apr 24, 18:05 UTCApr 24, 18:25 UTC20m
2026-04-24 N878WS - Apr 24, 00:00 UTCApr 24, 02:40 UTC2h 40m
2026-04-23 N878WS - Apr 23, 20:20 UTCApr 23, 21:15 UTC55m
2026-04-23 N878WS - Apr 23, 17:45 UTCApr 23, 18:50 UTC1h 5m
2026-04-23 N878WS - Apr 23, 15:50 UTCApr 23, 16:45 UTC55m
2026-04-23 N878WS - Apr 23, 13:55 UTCApr 23, 14:45 UTC50m
2026-04-22 N878WS - Apr 22, 21:15 UTCApr 22, 22:25 UTC1h 10m
2026-04-22 N878WS - Apr 22, 19:00 UTCApr 22, 20:05 UTC1h 5m
2026-04-22 N878WS - Apr 22, 16:55 UTCApr 22, 17:55 UTC1h 0m
2026-04-22 N878WS - Apr 22, 13:20 UTCApr 22, 14:30 UTC1h 10m
2026-04-21 N878WS - Apr 21, 21:50 UTCApr 21, 22:50 UTC1h 0m
2026-04-21 N878WS - Apr 21, 20:05 UTCApr 21, 20:25 UTC20m
2026-04-21 N878WS - Apr 21, 17:30 UTCApr 21, 18:50 UTC1h 20m
2026-04-20 N878WS - Apr 20, 22:10 UTCApr 20, 23:10 UTC1h 0m
2026-04-20 N878WS - Apr 20, 17:40 UTCApr 20, 18:50 UTC1h 10m
2026-04-17 N878WS - Apr 17, 21:25 UTCApr 17, 21:35 UTC10m
2026-04-17 N878WS - Apr 17, 20:20 UTCApr 17, 21:20 UTC1h 0m
2026-04-17 N878WS - Apr 17, 13:30 UTCApr 17, 14:40 UTC1h 10m
2026-04-16 N878WS - Apr 16, 19:50 UTCApr 16, 20:05 UTC15m
2026-04-16 N878WS - Apr 16, 18:50 UTCApr 16, 19:10 UTC20m
2026-04-16 N878WS - Apr 16, 17:20 UTCApr 16, 17:44 UTC25m
2026-04-16 N878WS - Apr 16, 16:25 UTCApr 16, 17:05 UTC40m
2026-04-16 N878WS - Apr 16, 13:40 UTCApr 16, 14:45 UTC1h 5m
2026-04-15 N878WS - Apr 15, 23:10 UTCApr 15, 23:20 UTC10m
2026-04-15 N878WS - Apr 15, 22:15 UTCApr 15, 23:00 UTC45m
2026-04-15 N878WS - Apr 15, 01:10 UTCApr 15, 02:10 UTC1h 0m
2026-04-13 N878WS - Apr 13, 17:35 UTCApr 13, 18:30 UTC55m

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 N878WS page for operator, model, and routing details .

Mode-S AC1613 frequently asked

What is Mode-S code AC1613?
AC1613 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N878WS.
Where is Mode-S AC1613 registered?
Mode-S code AC1613 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 AC1613 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC1613, octal 53013023, decimal 11,277,843.
What flights does AC1613 operate?
Mode-S AC1613 has broadcast 1 distinct callsign, including N878WS.