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  <FDSYS>
    <CFRTITLE>14</CFRTITLE>
    <CFRTITLETEXT>Aeronautics and Space</CFRTITLETEXT>
    <VOL>1</VOL>
    <DATE>2006-01-01</DATE>
    <ORIGINALDATE>2006-01-01</ORIGINALDATE>
    <COVERONLY>false</COVERONLY>
    <TITLE>Proof of compliance.</TITLE>
    <GRANULENUM>29.21</GRANULENUM>
    <HEADING>Section 29.21</HEADING>
    <ANCESTORS>
      <PARENT HEADING="Title 14" SEQ="5">Aeronautics and Space</PARENT>
      <PARENT HEADING="CHAPTER I" SEQ="4">FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION</PARENT>
      <PARENT HEADING="SUBCHAPTER C" SEQ="3">AIRCRAFT</PARENT>
      <PARENT HEADING="PART 29" SEQ="2">AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT</PARENT>
      <PARENT HEADING="Subpart B" SEQ="1">Flight</PARENT>
      <PARENT HEADING="" SEQ="0">General</PARENT>
    </ANCESTORS>
  </FDSYS>
  <SECTION>
    <SECTNO>§ 29.21</SECTNO>
    <SUBJECT>Proof of compliance.</SUBJECT>
    <P>Each requirement of this subpart must be met at each appropriate combination of weight and center of gravity within the range of loading conditions for which certification is requested. This must be shown—</P>
    <P>(a) By tests upon a rotorcraft of the type for which certification is requested, or by calculations based on, and equal in accuracy to, the results of testing; and</P>
    <P>(b) By systematic investigation of each required combination of weight and center of gravity, if compliance cannot be reasonably inferred from combinations investigated.</P>
    <CITA>[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29-24, 49 FR 44435, Nov. 6, 1984]</CITA>
  </SECTION>
</CFRGRANULE>
