A holder of an STC shall-
(a) keep the original STC safe in a place of operation and, if requested, produce such certificate to an authorized officer, inspector or authorized person for inspection;
(b) retain all relevant design information, drawings, test reports and inspection records of the product for period of 2 years from the date on which the last installed STC on a product has been permanently withdrawn from service;
(c) if requested, produce the design information, drawings, test reports and inspection records to an authorized officer, inspector or authorized person for inspection;
(d) provide instructions and any such instruction changes for safe operations and continuing airworthiness to a registered operator of an aircraft on which the concerned STC modification has been incorporated;
(e) remain responsible for the continued integrity of the change to the type of design and shall continue to be the Director’s contact point for resolving issues if corrective action is required;
(f) develop and maintain a system for receiving and analysing information relating to STC continuing airworthiness service difficulties and defects reported by an operator or a maintenance organization;
(g) inform an owner of a product, same type of the details and system developed in accordance with paragraph (f); and
(h) report to the Director any failure, malfunction or defect in accordance with Regulation 21.01.3.