EASA AD 2021-0224-E
Engine Controls — Power Controller — Replacement
Summary
EASA Airworthiness Directive 2021-0224-E is an emergency directive addressing the replacement of certain H300C power controllers installed on PIPISTREL VERTICAL SOLUTIONS d.o.o E-811-268MVLC electrical engines, commonly found on Pipistrel Virus SW 128 (Velis Electro) aeroplanes. The directive mandates replacement of affected power controllers due to a risk of uncommanded engine power loss during ground tests. This AD ensures continued airworthiness and safety of the affected aircraft and engines.
What Changed
This new emergency airworthiness directive introduces a mandatory replacement of H300C power controllers with specific part numbers and serial numbers identified as faulty. It prohibits installation of affected parts and allows only serviceable power controllers to be installed from the effective date. The directive also provides definitions and grouping criteria for affected and unaffected aeroplanes.
Why It Matters
This directive is critical for aviation professionals because it addresses a potentially unsafe condition that could cause engine in-flight shutdown, leading to forced landings and possible injury or damage. Operators and maintenance organizations must comply promptly to ensure flight safety and regulatory compliance. The directive also clarifies installation rules to prevent recurrence of the issue.
What To Do
Operators of Pipistrel Virus SW 128 (Velis Electro) aircraft with E-811-268MVLC engines must replace any affected H300C power controllers before the next flight after 11 October 2021. From that date, only serviceable power controllers may be installed on any affected or unaffected aircraft. Compliance must follow the instructions in Pipistrel Vertical Solutions Service Bulletin SB-811-00-80-002.
AI-generated summary from official EASA source document. Always verify against the original.