
It is with deep sadness that we announce the passing of David Leroy Grumman Sr. on January 3, 2025, at the age of 90. As the son of aviation pioneer Leroy Grumman, founder of the Grumman Aircraft Engineering Corporation, David carried on his family’s legacy of innovation and excellence.
David Sr. significantly contributed to energy efficiency and indoor air quality through his renowned engineering firm, Grumman|Butkus Associates, which he founded in 1973. His pioneering work improved sustainability practices in buildings worldwide.
Beyond his professional achievements, David was a dedicated supporter of the Cradle of Aviation Museum. For decades, his unwavering and consistent support helped preserve the rich history of Long Island’s aerospace industry. His commitment to aviation heritage was evident in his passion for sharing Grumman's legacy and its impact on aviation and space exploration.
Museum President Andrew Parton shared,
"David Grumman's passion for aviation and dedication to sustainability have left an indelible mark on our community. His legacy will continue to inspire future generations."
Grumman's Lasting Impact at the Cradle of Aviation Museum
Leroy Grumman’s founding of the Grumman Aircraft Engineering Corporation helped shape Long Island’s aerospace industry. The Cradle of Aviation Museum proudly preserves this legacy, showcasing:
- The Grumman F-11A Tiger was the first aircraft to use the NACA-developed "area rule" design, which reduced drag and improved efficiency.
- The Grumman F-14 Tomcat, an iconic naval jet with variable-sweep wings, is vital to U.S. Navy operations.
- The Grumman F6F Hellcat was a crucial World War II carrier-based fighter that helped secure Allied air superiority.
- The Grumman F9F-7 Cougar was a swept-wing jet fighter that marked a significant advancement in naval aviation.
- The Grumman G-21 Goose is a versatile amphibious aircraft used in both military and civilian roles.
- The Grumman Kitten, an experimental cabin monoplane that reflected Grumman's innovative approach to aircraft design.
- The Grumman Lunar Module LM-13, initially intended for Apollo 18 or 19, showcases Grumman’s key role in NASA's Apollo program.
We extend our heartfelt condolences to David’s family, friends, and all who knew him. His legacy of service, generosity, and innovation will continue to inspire for years to come.