http://links.govdelivery.com/track?type=click&enid=ZWFzPTEmbXNpZD0mYXVpZD0mbWFpbGluZ2lkPTIwMTcwODIzLjc3MjcyNjQxJm1lc3NhZ2VpZD1NREItUFJELUJVTC0yMDE3MDgyMy43NzI3MjY0MSZkYXRhYmFzZWlkPTEwMDEmc2VyaWFsPTE2OTQ2NTA1JmVtYWlsaWQ9QWVyb25hdXRlay5iY0BnbWFpbC5jb20mdXNlcmlkPUFlcm9uYXV0ZWsuYmNAZ21haWwuY29tJnRhcmdldGlkPSZmbD0mZXh0cmE9TXVsdGl2YXJpYXRlSWQ9JiYm&&&100&&&http://rgl.faa.gov/ wrote:
2017-16-11 Lycoming Engines Reciprocating Engines: (Type Certificate previously held by Textron Lycoming Division, AVCO Corporation): Amendment 39-18988; Docket No. FAA-2017- 0788; Product Identifier 2017-NE-27-AD.
AD is effective August 15, 2017.

(1) All Lycoming Engines reciprocating engines listed in Table 1 of Lycoming Engines Mandatory Service Bulletin (MSB) No. 632B, dated August 4, 2017, and
(2) all Lycoming Engines reciprocating engines that were overhauled or repaired using any replacement part listed in Table 2 of Lycoming Engines MSB No. 632B, dated August 4, 2017, which was shipped from Lycoming Engines during the dates listed in Table 2 of Lycoming Engines MSB No. 632B, dated August 4, 2017.