http://www.nhtsa.gov/staticfiles/nvs/pdf/NASA-UA_report.pdf But... If you do a search for the term "whiskers" in the full report , you will see that failure due to whiskers did happen. Section 6.6.2.3 (page 112) for example Bob Landman H&L Instruments, LLC www.hlinstruments.com LDF Coatings, LLC www.ldfcoatings.com