21.607—General rules governing holders of TSO authorizations.
Each manufacturer of an article for which a TSO authorization has been issued under this part shall—
(b)
Conduct all required tests and inspections and establish and maintain a quality control system adequate to ensure that the article meets the requirements of paragraph (a) of this section and is in condition for safe operation;
(c)
Prepare and maintain, for each model of each article for which a TSO authorization has been issued, a current file of complete technical data and records in accordance with § 21.613; and
(d)
Permanently and legibly mark each article to which this section applies with the following information: