The Flammability Assurance Process
Change Team
Our
team goal is lower cost—while continuing to meet safety requirements.
U.S. Federal Aviation Administration regulations mandate that airplanes
be made from fire-resistant materials—including those carrying electric
current. To guarantee flammability compliance, Boeing has been burn testing
every new electronic assembly it introduces on its planes—trial
by fire in a lab.
This has included a lot of new-model printed wiring circuit boards and
printed wiring assemblies—plus many additional printed wiring boards
and assemblies installed with each electronic upgrade of the airplane.
Even though many of these new circuit boards are made of identical materials,
Boeing still has had to "burn" them all in fire tests—costing
as much as $10,000 or more each.
Our team collaborated with the FAA to reduce redundant burning by completing
several years of extensive proof-of-concept testing and developing the
associated procedures. The FAA subsequently agreed to accept a "similarity"
approach for certifying the fireworthiness of specific eligible next-generation
printed circuit assemblies now being designed. Establishing their fireworthiness
by using data from previously tested similar circuit boards will eliminate
some 500 new burn tests on the 787 in its first year alone. Additionally,
this similarity process requires industry-standard materials that already
include flammability testing of the individual components be used in fabrication
of all printed wiring assemblies.
In five years, this system will save around $30 million for Boeing Commercial
Airplanes programs—"cool" savings that will help keep
Boeing competitive.
Clockwise from left
Ken Hester
Boeing Commercial Airplanes Systems Engineering
Shawn Thomas
Puget Sound Modification/Certification Engineering
George Sotolongo
Airplane Systems Safety and Airworthiness
Kenneth Young
Material & Process Technology, FAA Designated Engineering Representative/Boeing
Authorized Representative – Flammability
James Peterson
Material & Process Technology, Senior Technical Fellow, Boeing Authorized
Representative – Flammability
Terry McMillan
Laboratory Technician – Flammability Testing |