24 May Airspace Modernisation Project - Tranche Three Proposals May 24, 2019 AusALPA does not support the Tranche Three proposals of the Airspace Modernisation Project and believes that a significant rethink is required. Class E is an inherently less safe model of airspace classification to that of Class C. Any suggestion that the same levels of safety can be maintained when airspace is changed from C to E are simply false. Furthermore, Class E airspace at lower altitudes results in more of a challenge to maintain acceptable levels of safety because of the increased prevalence of VFR traffic at lower altitudes when compared with higher altitudes. Read more>> Comments are closed.