From the 2017-18 Update & Review (p.2):
8. TIMING & DATA TECHNICAL REPORT REQUIREMENT
A Timing and Data Technical Report is required for all levels of U.S. Ski & Snowboard events – both non-scored and scored. For non-FIS events, a signed copy of this form must be submitted to the applicable region/division representative. FIS will evaluate the TDTR’s for FIS events and will report any anomalies to U.S. Ski & Snowboard Competition Services.
A copy of the calculation(s) required for Replacement Time(s) (EET) must accompany the TDTR submitted to the above U.S. Ski & Snowboard Region/Division representatives.