Apparatus

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sensors Mode-S transponder

AC1EF0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N880MH · AIRBUS HELICOPTERS EC-130 · operated by MUSTANG LEASING LLC

Hex
AC1EF0
Octal
53017360
Decimal
11,280,112
Country
US
Tail
N880MH
Type
EC30
No current signal · last broadcast 3h ago
Flights observed
21
Distinct callsigns
1
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S AC1EF0.

Country allocation

The ICAO 24-bit address AC1EF0 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
N880MH - 21 2026-04-18

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-04-18 N880MH - Apr 18, 15:55 UTCApr 18, 16:15 UTC20m
2026-04-18 N880MH - Apr 18, 02:10 UTCApr 18, 02:30 UTC20m
2026-04-18 N880MH - Apr 18, 00:00 UTCApr 18, 00:30 UTC30m
2026-04-17 N880MH - Apr 17, 23:05 UTCApr 17, 23:20 UTC15m
2026-04-17 N880MH - Apr 17, 21:00 UTCApr 17, 21:15 UTC15m
2026-04-16 N880MH - Apr 16, 20:05 UTCApr 16, 20:25 UTC20m
2026-04-16 N880MH - Apr 16, 18:00 UTCApr 16, 18:15 UTC15m
2026-04-16 N880MH - Apr 16, 17:00 UTCApr 16, 17:10 UTC10m
2026-04-16 N880MH - Apr 16, 15:15 UTCApr 16, 15:30 UTC15m
2026-04-15 N880MH - Apr 15, 20:10 UTCApr 15, 20:30 UTC20m
2026-04-15 N880MH - Apr 15, 18:05 UTCApr 15, 18:25 UTC20m
2026-04-15 N880MH - Apr 15, 17:05 UTCApr 15, 17:20 UTC15m
2026-04-15 N880MH - Apr 15, 15:05 UTCApr 15, 15:30 UTC25m
2026-04-14 N880MH - Apr 14, 20:00 UTCApr 14, 20:20 UTC20m
2026-04-14 N880MH - Apr 14, 18:05 UTCApr 14, 18:35 UTC30m
2026-04-14 N880MH - Apr 14, 17:00 UTCApr 14, 17:20 UTC20m
2026-04-14 N880MH - Apr 14, 15:05 UTCApr 14, 15:25 UTC20m
2026-04-13 N880MH - Apr 13, 22:15 UTCApr 13, 22:30 UTC15m
2026-04-13 N880MH - Apr 13, 21:00 UTCApr 13, 21:25 UTC25m
2026-04-13 N880MH - Apr 13, 19:05 UTCApr 13, 19:25 UTC20m
2026-04-12 N880MH - Apr 12, 17:15 UTCApr 12, 17:25 UTC10m

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 N880MH page for operator, model, and routing details .

Mode-S AC1EF0 frequently asked

What is Mode-S code AC1EF0?
AC1EF0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N880MH.
Where is Mode-S AC1EF0 registered?
Mode-S code AC1EF0 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 AC1EF0 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC1EF0, octal 53017360, decimal 11,280,112.
What flights does AC1EF0 operate?
Mode-S AC1EF0 has broadcast 1 distinct callsign, including N880MH.