(iv) Removal of accessories that are listed as required equipment on the
aircraft or engine specification.
(v) Installation of structural parts other than the type of parts approved for
the installation.
(vi) Conversions of any sort for the purpose of using fuel of a rating or
grade other than that listed in the engine specifications.
(3) Propeller major alterations.
(i) Changes in blade design.
(ii) Changes in hub design.
(iii) Installation of parts not approved for the propeller.
(iv) Change of propeller pitch.
(b) Major repairs. Must be pre-approved by the Manufacturer or other identity and
performed by an FAA certified A&P
All major repairs or alterations made to aircraft subsequent to its initial design and
production acceptance testing to applicable ASTM standards and sale to a consumer must
be evaluated relative to the requirements of the applicable ASTM design and production
acceptance specification(s).
The manufacturer or other entity that performs the evaluation of an alteration or repair
shall provide a written affidavit that the aircraft being altered will still meet the
requirements of the applicable ASTM design and performance specification subsequent to
the alteration.
(1) Airframe major repairs. Repairs to the following parts of an airframe and repairs of the
following types, involving the strengthening, reinforcing, splicing, and manufacturing of
primary structural members or their replacement, when replacement is by fabrication such
as riveting or welding, are airframe major repairs.
(i) Spars.
(ii) Monocoque or semimonocoque wings or control surfaces.
(iii) Spar flanges.
(iv) Wing main ribs and compression members
(v) Wing or tail surfaces
(vi) Engine mount.
(vii) Fuselage longerons.
(viii) Members of the side truss, horizontal truss, or bulkheads.
Appendix 2 July 09
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