EASA SIB CE-13-44
Lake Model LA-4-200 Aeroplanes - Bendix 450-OK Fuel Filter
Summary
The Special Airworthiness Information Bulletin SAIB: CE-13-44 is an FAA informational bulletin addressing fuel filter concerns on Lake Model LA-4-200 airplanes. It highlights issues with the original Bendix 450-OK fuel filter, which may cause engine power loss during takeoff due to inadequate fuel flow. The bulletin provides recommendations for replacement or relocation of the fuel filter to improve safety and reliability.
What Changed
This bulletin introduces recommendations to replace the original Bendix 450-OK fuel filter with the FAA-approved Airmaze Filter Assembly AM01W052261, which offers a higher flow rate and bypass capabilities. It also suggests relocating the fuel filter below the center fuel tank under FAA Supplemental Type Certificate SA00333BO to allow proper drainage of water and sediment. These changes aim to mitigate engine power loss events related to fuel flow restrictions.
Why It Matters
This information is important for operators and maintenance personnel of Lake Model LA-4-200 airplanes because the original fuel filter design can lead to engine surging and power reduction, increasing the risk of accidents. Implementing the recommended filter replacement or relocation enhances engine reliability and safety during critical phases like takeoff. Compliance with these recommendations supports continued airworthiness and operational safety.
What To Do
Operators should replace or relocate the Bendix 450-OK fuel filter within the next 25 hours time-in-service. Pilots must continue standard preflight procedures, including draining fuel tank gascolators and ensuring the fuel boost pump is engaged during takeoff. The fuel filter should be inspected or replaced as needed during each 100-hour or annual inspection.