3-2333 PART 121 APPLICANT PROVING TEST REQUIREMENTS. Requirements for part 121 proving tests (part 119, § 119.33 and part 121, § 121.163) include, but are not limited to:
Indicates new/changed information. Indicates new/changed information.
A. Initial Airplane Proving Tests. For a newly manufactured aircraft, an applicant must conduct a minimum of 100 hours of proving test, if an aircraft of this type has not before proven for use in a kind of operation under this part or part 135 of this chapter unless an airplane of that type has had, in addition to the airplane certification tests, at least 100 hours of proving tests acceptable to the Administrator, including a representative number of flights into en route airports. The Administrator may reduce the requirement for at least 100 hours of proving tests if the Administrator determines that a satisfactory level of proficiency has been demonstrated to justify the reduction. This requirement applies to either new aircraft manufactured in the United States or to any foreign manufactured aircraft that a U.S. certificate holder has not previously operated. Ten (10) hours must be flown at night.
C. Materially Altered Airplane. Applicants must conduct at least 50 hours of proving tests when the type of aircraft to be used has been materially altered in design. Examples of materially altering an aircraft design include:
· Installation of engines that are a different type from those originally installed on the aircraft for type certification (for example, reciprocating powered engines to turbine powered engines, or low bypass jet engines to high bypass jet engines), or
· Any design alterations that significantly affect flight characteristics, (principal operations inspectors (POI) may contact the appropriate certification directorate).
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