EASA SIB NE-13-06
Lycoming 320, 360 and 540 Series Engines with Engine Components International (ECi) Pushrod Shroud Spring Retainers installed
Summary
The Special Airworthiness Information Bulletin (SAIB) NE-13-06 issued by the FAA addresses an airworthiness concern involving Engine Components International (ECi) pushrod shroud spring retainers, part number AEL14995, installed on Lycoming Engines 320, 360, and 540 series reciprocating parallel valve engines. The bulletin informs owners, operators, and certified repair facilities about potential failures of these retainers that may cause pushrod tubes or shrouds to loosen and possibly leak oil. The document provides guidance on identifying and replacing older designs of these retainers to maintain engine reliability.
What Changed
This SAIB introduces awareness of a failure issue with ECi pushrod shroud spring retainers, P/N AEL14995, which are PMA replacements for Lycoming's original parts. It highlights that the older design made from heat treated carbon steel has been redesigned by ECi, and the FAA recommends removing the older design from service. No mandatory regulatory action such as an airworthiness directive has been issued at this time.
Why It Matters
This information is important for aviation professionals because failure of the pushrod shroud spring retainers can lead to loose pushrod tubes and potential oil leaks, which may affect engine performance and safety. Operators and maintenance organizations need to be aware of the risk and inspect engines that have undergone overhaul with ECi gasket sets containing these retainers. Proactive replacement of the older design retainers helps ensure continued airworthiness and reduces the risk of engine issues.
What To Do
Operators and maintenance personnel should review ECi Service Instruction SI No. 12-1 to identify older design pushrod shroud spring retainers on Lycoming 320, 360, and 540 series engines. If the older retainers are found, the FAA recommends replacing them with the redesigned parts. Any broken or cracked retainers must be replaced with approved parts in accordance with 14 CFR Section 91.405(a). No specific compliance deadline is mandated.