Mooney M20U Ovation Ultra — Service Bulletins

This service instruction document, issued by Mooney International Corporation, outlines the necessary modifications to the seat back cushions of the Mooney M20U Ovation Ultra aircraft. Specifically, it addresses the need to trim the front seat back cushions to ensure proper clearance between the bottom cushion and the seat height adjustment handle. The document provides detailed procedures for removing and modifying the seat foam, ensuring that the modifications are performed safely and effectively. It is intended for use by FAA Certified Mechanics and includes warranty information for labor associated with the modifications.

• Modification required for seat back cushions to ensure clearance with seat height adjustment handle.
• Step-by-step procedure for removing and trimming seat back foam is provided.
• Labor warranty of 6 hours is available if modifications are performed as instructed.
• Specific hardware required includes AN23-14A screws, MS21042-3 nuts, and NAS1149F0363P washers.
• Caution advised when separating leather from the seat frame to avoid tearing.