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Aero Advantage closing shop.
Got this Email today in my mail. I found it a big troubling as I just
installed the Dual pump in September last year in my B35. (Works great BTW) Does anyone else know the specifics behind the failure of the vanes, and if there is an AD pending? Important Information for Customers Customer experience has uncovered a type of pump failure never experienced in years of field and laboratory testing of the dual rotor vacuum pump design, including the deliberate destruction of over 300 test pumps. These failures resulted in malfunctioning of both pumping chambers simultaneously. The failures are concentrated on the 300 horsepower Lycoming IO-540 engines. We believe that these engines generate a resonant frequency resulting in breakage of both graphite rotors. Multiple replacement pumps have failed on three different engines. At this point, we can't be certain about similar failures occurring on other engines. A failure rate of 3%, while seemingly small, is not acceptable for our product. Although the dual rotor pumps are performing well in the other 97% of installations, shipping of dual rotor pumps has been halted. The tens of thousands of dollars of orders on hand will not be filled. Aero Advantage refuses to continue marketing a product that might not perform satisfactorily for all its customers. Aero Advantage was founded, in good faith, to improve safety of flight and to allow greater peace of mind for its customers by eliminating sudden loss of the vacuum source. While the precise changes that are needed to improve reliability may already be in place, they would likely require between 3 and 9 months to finalize and place into production. The company can not survive the financial burden of having no sales for that length of time and is closing its doors. Closure of the business was an extremely difficult decision for me, the inventor and company founder, since I have invested five years of work and most of my life's savings in the business. Several parties have expressed an interest in procuring the current technology and continuing the development of the necessary product improvements. It is with much regret that I announce the above decision. I believe it is the correct one for all concerned. Sincerely, David A. Boldenow |
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