Superior Responds to Crankshaft NPRM - KITPLANES Sign in Home Magazine Flight Reports Builder Spotlight Exploring Shop Talk Designer’s Notebook PDF Issues SUBSCRIBE Contact Us Customer Service Guidelines for Writers Advertise with Kitplanes Newsline News Industry News Kneeboard Notes Video Builders Homebuilder’s Portal Completions Classified Ads Create Manage Resources Aircraft Buyer’s Guide Buying a Used Homebuilt Engines Avionics Propellers Products Builders’ Marketplace Sign in Welcome!Log into your account your username your password Forgot your password? Privacy Policy Password recovery Recover your password your email Search Sign in / Join Activate My Web Access Subscribe My account Free Newsletter Advertise Give a Gift Sign in Welcome! Log into your account your username your password Forgot your password? Get help Privacy Policy Password recovery Recover your password your email A password will be e-mailed to you. KITPLANES Home Magazine Flight Reports Builder Spotlight Exploring Shop Talk Designer’s Notebook PDF Issues SUBSCRIBE Contact Us Customer Service Guidelines for Writers Advertise with Kitplanes Newsline News Industry News Kneeboard Notes Video Builders Homebuilder’s Portal Completions Classified Ads Create Manage Resources Aircraft Buyer’s Guide Buying a Used Homebuilt Engines Avionics Propellers Products Builders’ Marketplace Home Newsline Industry News Superior Responds to Crankshaft NPRM Newsline Industry News Superior Responds to Crankshaft NPRM By Marc Cook - February 25, 2020 0 Superior Air Parts issued a statement regarding the FAA’s Notice of Proposed Rulemaking on potentially defective crankshafts in some Lycoming engines. This NPRM, which identifies cranks in some 115 engines, is likely to turn into an Airworthiness Directive. According to Superior, the NPRM affects Superior-built O-360 and IO-360 engines, and certain Lycoming engines (AEIO-360, IO-360 and O-360). “Unfortunately, we were only informed of the proposed rule two-weeks ago. Since then, we have been in contact with the FAA regarding their findings to fully understand the issue and identify the most likely cause of the failures,” stated Scott Hayes, VP of sales and marketing Superior Air Parts, Inc. “Our engineering team is currently reviewing all of the available information, and once we have determined the actual cause, we can work with the FAA to determine the most logical course of action.” “All I can say for certain is that it is still just too early to form any type of conclusion about what caused these three crankshafts to fail the way they did,” stated Bill Ross, VP of product support, Superior Air Parts, Inc. “We want every one of our customers to know that we put safety ahead of everything and will do everything in our power to find the root cause as soon as possible.” Superior claims that the affected crankshafts were “all produced by a specific Superior Air Parts vendor between 2012 and 2014, with the following parts numbers: (P/N) SL36500-A20 or P/N SL36500-A31, with serial numbers 82976-01; 82976-02; SP12-0003 through AP12-0089, inclusive; SP13-0034 through SP13-0150, inclusive; or SP14-0151 through SP14-0202, inclusive.” The cranks were in new engines from Superior as well as sold as replacement parts for other engines. The NPRM stems from the FAA’s recognition of three engine stoppages from March 2017 to October 2018 resulting from crankshaft failure. In the NPRM, the FAA says that it “considered alternatives that may be less burdensome than removing the crankshaft assembly from service, including not taking AD action and requiring periodic inspections of the crankshaft assembly. However, these options are not acceptable because taking no action does not correct this known unsafe condition and the crankshaft assembly cannot be inspected without destroying it. The FAA concluded that there is no acceptable safety alternative to the replacement of the crankshaft assembly.” Airshow coverage sponsor: VIAAVweb TAGS engines faa superior engines Previous articleuAvionix tailBeaconX Next articleSmall Screens, Big Deal Marc Cook KITPLANES Editor in Chief Marc Cook has been in aviation journalism for more than 30 years. He is a 4000-hour instrument-rated, multi-engine pilot with experience in nearly 150 types. He’s completed two kit aircraft, an Aero Designs Pulsar XP and a Glasair Sportsman 2+2, and currently flies a 2002 GlaStar. RELATED ARTICLESMORE FROM AUTHOR GAMI G100UL Approval and Next Steps GAMI Unleaded Avgas Approved For GA Piston Fleet What You Should Know About Hoses Continental Increases R&D Budget, Plans to Reduce Lead Times Pinnacle of Tattoos Heron Turbine Lycoming Assembly Workshop TurbAero Update from AirVenture 2022 Firewall Forward: Carburetors and Troubleshooting LEAVE A REPLY Cancel reply Please enter your comment! Please enter your name here You have entered an incorrect email address! Please enter your email address here Δ This site uses Akismet to reduce spam. Learn how your comment data is processed. In Case You Missed it Repairman Certificate, Aerobatics, LSA Rules Mel Asberry - February 20, 2022 0 Question: I have a question about the repairman certificate. Let’s say the FAA issues... All About Avionics: Wiring Bundles Stein Bruch - June 11, 2009 0 Anyone can make wiring look good. The bonus is that your installations maintenance and future upgrades will be much easier. Stein Bruch shows you how. Rotax Training for the 9 Series Vic Syracuse - March 28, 2020 5 Lockwood Aviation helps you get a full understanding of the four-stroke Rotax. Wind Tunnel Barnaby Wainfan - September 15, 2007 0 Its an age-old duality: stability versus maneuverability. Many factors go into developing and building any aircraft, and the designers choices will affect a pilots workload, for good or ill. Among the topics discussed are trim, pitch stability and yaw stability; Search by tags: ads-b airventure avionics building technique dar design techniques dynon eaa editorials efis electrical electronics engines faa fly-in fuel fwf garmin history homebuilder humor instruments kit building kitplanes lsa lycoming maintenance ownership pilot events products propellers racing rans regulations reno replica safety shop tip sonex subsonex sun 'n fun tools van's video zenith ABOUT US Kitplanes Magazine: Your Homebuilt Aircraft Authority. We cover topics relevant to anyone who has ever dreamed of building or owning a homebuilt experimental aircraft. FOLLOW US Give a Gift Contact Us Advertise Subscribe Privacy Do Not Sell My Personal Information Customer Service © 2022 Kitplanes.com. All rights reserved worldwide. Kitplanes.com and the Kitplanes logo are protected properties under international copyright law. '); var formated_str = arr_splits[i].replace(/\surl\(\'(?!data\:)/gi, function regex_function(str) { return ' url(\'' + dir_path + '/' + str.replace(/url\(\'/gi, '').replace(/^\s+|\s+$/gm,''); }); splited_css += ""; } var td_theme_css = jQuery('link#td-theme-css'); if (td_theme_css.length) { td_theme_css.after(splited_css); } } }); } })();