[Correction] Powerplant — Engine Cooling Fan — Replacement
- Published
- Effective
- Deadline
- Replaces
- 2017-0039
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must replace affected aluminium cooling fans with the composite front flange version within specified compliance times based on flight hours accumulated by 10 March 2017. Installation of affected parts is prohibited from the effective date of 14 August 2019. Maintenance teams should follow Hélicoptères Guimbal Service Bulletin 16-021 issue D for replacement instructions and ensure compliance with updated airworthiness limitations.
Summary
EASA Airworthiness Directive 2019-0187 is a corrective directive addressing the replacement of engine cooling fans on Hélicoptères Guimbal Cabri G2 helicopters. It applies to specific aluminium cooling fan part numbers G52-00-000, G52-00-001, and G52-04-100, requiring replacement with a serviceable composite front flange cooling fan P/N G52-04-101. The directive aims to prevent engine in-flight shutdowns caused by cooling fan failures.
What changed
This directive supersedes EASA AD 2017-0039 and introduces updated compliance times based on flight hours for replacing affected cooling fans. It removes obsolete modification and inspection requirements now covered by the Hélicoptères Guimbal Cabri G2 Maintenance Manual and corrects the definition of a serviceable part. The directive mandates replacement deadlines depending on the accumulated flight hours of the affected parts as of 10 March 2017.
Why it matters
This directive is critical for operators and maintenance organizations to prevent engine failures due to cooling fan cracks that can cause forced landings. Compliance ensures continued airworthiness and safety of Cabri G2 helicopters by mandating timely replacement of vulnerable cooling fans. It also clarifies inspection and modification requirements, reducing the risk of unexpected engine shutdowns and associated operational disruptions.
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