: Installation of a pitot-type engine air intake in accordance with R. David Record Installation Manual, dated August 18, 1988, and Master Print List No. 062088, dated September 23, 1988 Note: The engines approved are United Aircraft of Canada models PT6A-34AG, PT6A-15AG, or PT6A-11AG. The propellers are Hartzell model HC-B3TN-3C hubs with T-10282 blades. View PDF on drs.faa.gov ↗

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