Apparatus

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sensors Mode-S transponder

AC1DD8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N880AC · MITSUBISHI MU-2 Marquise · operated by CATCLAW LLC

Hex
AC1DD8
Octal
53016730
Decimal
11,279,832
Country
US
Tail
N880AC
Type
MU2
No current signal · last broadcast Jul 22, 21:50 UTC
Flights observed
21
Distinct callsigns
1
Country
US
Last broadcast
Jul 22, 21:50 UTC

Last known position

Most recent position reported by Mode-S AC1DD8.

Country allocation

The ICAO 24-bit address AC1DD8 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
N880AC - 21 2026-07-22

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-07-22 N880AC - Jul 22, 21:10 UTCJul 22, 21:50 UTC40m
2026-07-22 N880AC - Jul 22, 11:35 UTCJul 22, 12:15 UTC40m
2026-07-18 N880AC - Jul 18, 21:35 UTCJul 18, 22:15 UTC40m
2026-07-18 N880AC - Jul 18, 14:40 UTCJul 18, 15:30 UTC50m
2026-07-17 N880AC - Jul 17, 13:15 UTCJul 17, 14:10 UTC55m
2026-07-16 N880AC - Jul 16, 22:05 UTCJul 16, 22:55 UTC50m
2026-07-16 N880AC - Jul 16, 17:49 UTCJul 16, 18:44 UTC55m
2026-07-16 N880AC - Jul 16, 13:40 UTCJul 16, 14:40 UTC1h 0m
2026-07-14 N880AC - Jul 14, 09:00 UTCJul 14, 10:50 UTC1h 50m
2026-07-13 N880AC - Jul 13, 19:45 UTCJul 13, 20:45 UTC1h 0m
2026-07-13 N880AC - Jul 13, 18:05 UTCJul 13, 19:00 UTC55m
2026-06-25 N880AC - Jun 25, 16:50 UTCJun 25, 17:49 UTC1h 0m
2026-06-25 N880AC - Jun 25, 12:19 UTCJun 25, 13:14 UTC55m
2026-06-22 N880AC - Jun 22, 14:55 UTCJun 22, 16:45 UTC1h 50m
2026-06-10 N880AC - Jun 10, 20:30 UTCJun 10, 21:10 UTC40m
2026-06-10 N880AC - Jun 10, 12:00 UTCJun 10, 12:45 UTC45m
2026-06-09 N880AC - Jun 9, 22:20 UTCJun 9, 22:35 UTC15m
2026-06-09 N880AC - Jun 9, 12:55 UTCJun 9, 13:35 UTC40m
2026-06-09 N880AC - Jun 9, 11:25 UTCJun 9, 12:15 UTC50m
2026-04-30 N880AC - Apr 30, 15:35 UTCApr 30, 16:05 UTC30m
2026-04-30 N880AC - Apr 30, 11:05 UTCApr 30, 11:35 UTC30m

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 N880AC page for operator, model, and routing details .

Mode-S AC1DD8 frequently asked

What is Mode-S code AC1DD8?
AC1DD8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N880AC.
Where is Mode-S AC1DD8 registered?
Mode-S code AC1DD8 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 AC1DD8 broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC1DD8, octal 53016730, decimal 11,279,832.
What flights does AC1DD8 operate?
Mode-S AC1DD8 has broadcast 1 distinct callsign, including N880AC.