The University of North Dakota (UND) aviation fleet experienced abnormal exhaust valve seat recession after switching from 100LL to UL94 unleaded fuel. Lycoming Engines' study found that engine ...
LYCOMING WINS FAA APPROVAL TO BUILD REPLACEMENT CRANKSHAFTS - Textron's Lycoming Engine Co., won certification from FAA last week to produce new crankshafts to replace hundreds of suspect units, some ...
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