Cessna 172 Skyhawk — Supplemental Type Certificate

This document is a Supplemental Flight Manual No. 3 for the Cessna Model 172 I, K, and L, specifically for serial numbers 17256513 through 17260758. It details the modifications required when installing a Sensenich propeller model 74DM7S14. The manual must be kept in the aircraft when the specified propeller is installed, as it contains important operational limitations and procedures that supplement the original aircraft documentation. The manual is FAA approved and outlines necessary placards and markings that must be adhered to for compliance with safety regulations.

• This manual is for Cessna Model 172 I, K, and L, S/N 17256513 through 17260758.
• The maximum engine speed is 2700 RPM.
• Static RPM range at full throttle is 2100 to 2400 RPM.
• Propeller model number is Sensenich 74DM7S14.
• Propeller diameter must be between 72.5 inches and 74 inches.