Airworthiness Directives; Hélicoptères Guimbal Helicopters

FAA / Federal Register · 2021-16684

The FAA proposes to adopt a new airworthiness directive (AD) for H[eacute]licopt[egrave]res Guimbal (HG) Model Cabri G2 helicopters with certain part-numbered aluminum cooling fans (cooling fan) installed. This proposed AD was prompted by reports of two occurrences of in-flight shutdowns due to a crack and subsequent failure of the cooling fan. This proposed AD would require removing certain part- numbered cooling fans from service, or modifying certain part-numbered cooling fans before exceeding a certain total hours time-in-service (TIS), and installing newly designed cooling fans. This proposed AD would also prohibit installing any affected cooling fan on any helicopter. The FAA is proposing this AD to address the unsafe condition on these products.