Lightning strike.
CFR · 2024-01-01 · US · Title 14
The applicant must demonstrate, by tests, analysis based on tests, or experience on similar designs, that the propeller can withstand a lightning strike without causing a major or hazardous propeller effect. The limit to which the propeller has been qualified must be documented in the appropriate manuals. This section does not apply to
official document · source cfr-2024 · id 14:§ 35.38