CFM problems
Snecma (aka Smecma) did have some flameout problems on the CFM 56 (3B-2/3C-1 etc) engines in the earlier days. They were corrected by increasing flight idle RPM somewhat, as well as replacing the spinner cones with discs, thus dispersing rain water to the bypass of the engine instead of through the hot section.
This is what I´ve been told by three wise men.
Brgds,
Lackof747