With the implementation of the OSD principles in Part-21 (Regulation (EU) 748/2012), the EASA approved OSD are held under the ownership of the TC or STC holder. In accordance with 21.A.62 the TC or STC holder has an obligation to make the data available to end users (any person required to comply with the OSD). The OSD Contact list aims to facilitate the link between TC and STC holders and the Stakeholders who need access to the data, providing functional mailboxes or websites that Stakeholders can use for OSD matters. The list is regularly updated and is based on TC or STC holder feedback.
Should you require any further clarification or need to modify the existing contact details, please contact OSD [at] easa.europa.eu