Piston helicopter

N984MM

2025 Homebuilt Calidus

Registered No accidents on file
Built
2025
Serial
C00597
Class
Piston helicopter
Engines
Rotax 912ULS series
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Denton, TX
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Registration record

N984MM on the FAA register

Type
2025 Homebuilt Calidus
Serial
C00597
Engines
Rotax 912ULS series
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Denton, TX
Certificate issued
2025-07-17
Airworthiness date
2025-09-17
Registration expires
2032-07-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
ADBB1F
Mode S (octal)
53335437
Seats (type)
2
Weight class
up to 12,499 lb
Kit
Autogyro Gmbh CALIDUS
Status
Current as of October 2026
Registry history

Timeline

  • 2032-07-31
    Registration expires (renewal due).
  • 2025-09-17
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 2025-07-17
    Certificate of registration issued as N984MM.
Overview

About N984MM

N984MM is a 2025 Homebuilt Calidus, serial number C00597. It is registered to an individual in Denton, Texas. The current certificate of registration was issued on July 17, 2025 and expires on July 31, 2032.

The FAA aircraft reference file describes the type as a piston helicopter, one Rotax 912ULS series engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated September 17, 2025.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N984MM.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N984MM.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

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Other piston helicopters on the register

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Browse: Aircraft registered in Texas· Registry by state· FAA registry stats

Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.