Part 26 of CASR Airworthiness standards for aircraft in the primary category or intermediate category

Rule status

Current

Part 26 of the Civil Aviation Safety Regulations (CASR) sets out the airworthiness standards for aircraft in the primary or intermediate categories. These are aircraft covered by standards set out in Parts 22, 23, 27, 32, 33 or 35.

A primary category aircraft is an aircraft that:

  • is unpowered; or is an aeroplane powered by a single naturally-aspirated engine, with a stalling speed or minimum steady flight speed in the landing configuration (Vso) of 61 knots or less; or is a rotorcraft powered by a single naturally-aspirated engine, with a 29.3 kg/m2 main rotor disc loading limitation under sea level standard day conditions
  • has a maximum take-off weight up to 1,225 kg, or 1,530 kg if a seaplane
  • has a maximum seating capacity of not more than 4 persons, including the pilot
  • has an unpressurised cabin.

An intermediate category aircraft is an aircraft that:

  • is an aeroplane with a stalling speed or minimum steady flight speed in the landing configuration (Vso) of 61 knots or less; or is a rotorcraft with a 29.3 kg/m2 main rotor disc loading limitation under sea level standard day conditions
  • has a maximum take-off weight of not more than 1,750 kg
  • has a maximum seating capacity of 4 persons, including the pilot
  • has an unpressurised cabin.

Part 26 has been based on foreign legislation for primary category aircraft, specifically the USA's Federal Aviation Regulations. The intermediate category is a unique Australian aircraft category.

Who it affects

Part 26 of CASR affects:

  • people who design small aircraft of simple design and low weight
  • people who design modifications and repairs for small aircraft of simple design and low weight.

Legislative instruments

Legislative instruments include exemptions to particular regulatory requirements in aviation regulations or a Manual of Standards, but which apply to a broad range of persons. Instruments related to this part will display in this space or you can view our list of legislative instruments.

Non-legislative instruments

Non-legislative instruments include exemptions to particular regulatory requirements in aviation regulations or a Manual of Standards, but which apply to a particular person. Non-legislative instruments related to this part will display in this space or your can view our list of non-legislative instruments.

Guidance material

Advisory material provides advice and guidance to explain particular regulatory requirements of a CASR Part. Guidance material relating to this part will appear in this space or you can view all our guidance material.

Date published:
Online version available at: https://www.casa.gov.au//search-centre/rules/part-26-casr-airworthiness-standards-aircraft-primary-category-or-intermediate-category
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