Summary
The FAA proposes to adopt a new airworthiness directive (AD) for Robinson Helicopter Company Model R44 and R44 II helicopters with an agricultural spray system installed by Supplemental Type Certificate (STC) SR00286BO (spray system). This spray system is also known as a Simplex Manufacturing Company (Simplex) Model 244 spray system. This proposed AD was prompted by a report of an in-flight failure of the spray system elbow pump fitting (pump fitting). This proposed AD would require repetitive inspections of the spray system pump fitting, corrective action if necessary, replacement of the spray system pump fitting, and installation of hose supports and a pump outlet cover. The FAA is proposing this AD to address the unsafe condition on these products.