26.307 Damage tolerance data for existing changes to
fatigue-critical structure
(a) A holder of a type-certificate (TC) or restricted TC for a turbine-powered large aeroplane certified on or after 1 January 1958 certified to carry 30 passengers or more, or with a payload capacity of 3 402 kg (7 500 lbs) or more, for changes and fatigue-critical modified structure (FCMS) existing on 26 February 2021 shall:
(i) review existing design changes (design modifications) and identify all changes that affect FCBS identified in accordance with point 26.306;
(ii) for each change identified in accordance with paragraph (a)(i), identify any associated fatigue-critical modified structure (FCMS);
(iii) for each change identified in accordance with paragraph (a)(i), perform a damage tolerance evaluation and establish and document the associated damage tolerance inspections;
(b) The holder of a type-certificate (TC) or a restricted TC shall submit the list of all fatigue-critical modified structure (FCMS) identified in accordance with paragraph (a)(ii) to the Agency before 26 February 2022, for approval.
(c) The holder of a type-certificate (TC) or a restricted TC shall submit the damage tolerance data, including DTI, resulting from the evaluation performed in accordance with paragraph (a)(iii) to the Agency before 26 August 2022, for approval.
(d) Upon approval by the Agency of the FCMS list submitted in accordance
with paragraph (b), the holder of a type- certificate (TC) or restricted shall
make that list available to operators and persons required to comply with
points 26.330 and 26.370.
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