| Take it from a true to life Sky Geek, it is always best to stay up to date when it comes to your aircraft engine and adjust to changes in requirements. In 1996 the Airworthiness Directive 96-09-10 was released (which affects Textron Lycoming reciprocating aircraft engines) to prevent an oil pump failure. You need certain replacement oil pump gears made of hardened steel to correct this issue. This FAA/PMA approved replacement oil pump gear from SkyGeek.com will do the trick. If you have any additional questions, we encourage you to check out our knowledgeable Help Center. Center. | 
