Developed, demonstrated, and implemented into depot remanufacturing production a thermal curing blanket that can maintain a temperature of 250^oF +/- 5^oF over a 24-foot-long bonding surface. This resulted in a reliable, durable, and repeatable method by which main rotor leading edge de-icing mat sheath assemblies (one of the depot’s most difficult advanced composite repairs) could be replaced and rebounded. By using control feedback and closer heat zoning, this effort demonstrates control of localized heating over a long span. This project provided technology that can be horizontally applied to any repair dealing with thermal curing using heat blankets.