Cessna Citation XLS+ — Specifications

This document is a process specification for the fabrication of test panels using NMS 128 material, specifically for Hexcel 8552 and 8552S prepregs. It outlines the methods for prepreg cutting, layup, vacuum bagging, and curing processes in an autoclave. The specification is intended for use in material qualification, equivalency, and acceptance testing, and serves as a baseline for users to develop their own process specifications for aerospace composite parts. It includes health and safety considerations, applicable documents, materials required, and detailed procedures for test laminate fabrication. This document is relevant for engineers and technicians involved in the fabrication of composite structures for the Cessna Citation XLS+ and other aerospace applications.

• The document outlines the fabrication process for test panels using NMS 128 material for Hexcel prepregs.
• Key materials include vacuum bags, breather materials, and release films, all with specified temperature tolerances.
• The baseline cure cycle requires heating to 355±10°F and holding for 120 minutes, with specific pressure requirements.
• Quality assurance includes in-process monitoring of temperatures and pressures, with ultrasonic inspection performed by NCAMP.
• Shipping guidelines require completion of monitoring data and FAA conformity records.