CAO 95.55 - 45 knot stall speed consultation

Date published: 23 March 2022

Date:

We are consulting on proposed changes to the stall speed limits that apply to lightweight aeroplanes operated by self-administering organisations.

Background

On 2 December 2021, new rules commenced which increased the allowable maximum take-off weight (MTOW) of these aeroplanes from 600 kg to 760 kg. The change to the MTOW was the outcome of a discussion paper consulted with the aviation community in 2019. 

During the consultation some respondents:

  • requested CASA increase the maximum stall speed limit beyond 45 knots to capture 2-seat aircraft with an MTOW of 760 kg or less (whose stall speed was greater than 45 knots), or
  • identified the stall speed limit as a concern.

After considering submissions, we determined the 45 knot stall speed should initially remain and that a review of the stall speed limitation be conducted and consulted with industry. 

Have your say

We promised to revisit the stall speed limits that apply to lightweight aeroplanes and would like your feedback.

We are proposing to amend CAO 95.55 to achieve the following outcomes:

  • Remove the 45 knot stall speed limit for lightweight aeroplanes (other than for aeroplanes certificated to CS-VLA as this speed remains a certification limit for these aeroplanes) for which a certificate of airworthiness is in force under regulation 21.176 of the Civil Aviation Safety Regulations 1998 (CASR).
  • Remove the 45 knot stall speed limit for lightweight aeroplanes for which an experimental certificate of airworthiness issued for a purpose mentioned in either paragraph 21.191(g) or paragraph 21.191(h) of CASR is in force.

The amendment to CAO 95.55 will also be incorporated into Part 103 of CASR.

Please provide your feedback on the Consultation Hub before 13 April 2022.
 

Have your say
Online version available at: https://www.casa.gov.au//cao-9555-45-knot-stall-speed-consultation
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