Precise Flight Inc. speed brake system. Manufactured in accordance with Precise Flight Engineering Drawing List 010S0000, Revision W, or later FAA approved revision. Installed in accordance with Precise Flight Engineering Drawing List 300S0000, Revision J, or later FAA approved revision. Maintained in accordance with Precise Flight Instructions for Continued Airworthiness, contained in Airplane Flight Manual Supplement Document 300SMAN0001, latest FAA approved revision. NOTE: This approval is limited to airplanes which have had speed brake provisions installed in the wing at the Lancair factory during the manufacture of the airplane. View PDF on drs.faa.gov ↗

The STC PDF is authoritative: installation instructions, ICA requirements and limitations.