Applicability of 90-Day Rule for Intermixed Airplane Engines and/ or Nacelles
other · Rule · Statement of policy. · Published 1999-11-23 · 64 FR 65655
Document
Document number
99-30502
Federal Register citation
64 FR 65655
Type
Rule
Action
Statement of policy.
Category
other
Publication date
1999-11-23
Abstract
This document clarifies the continued applicability of the 90- day limit for certain changes in airplane type designs after the final compliance date requiring an all Stage 3 fleet in the contiguous United States. The Federal Aviation Administration (FAA) has received numerous inquiries regarding the use of the 90-day limit after December 31, 1999. This document provides guidance to operators that need to use that provision of the airplane type certification regulations, including the limits of its use.