NTSB Recommends FAA Revise Certification Procedures for New Airplanes

The NTSB recommends that the Federal Aviation Administration revise certification procedures for new airplanes to require the airplane manufacturer to determine that the dynamometer brake drag force test curves used for certification are consistent with the brake forces and energy absorption rates that can be developed during a maximum kinetic energy rejected takeoff. The NTSB also recommends that the airplane and brake manufacturers record brake wear during maximum kinetic energy brake certification tests to determine the onset time and rate of the brake wear during the stop, and then use these data in the development of in-service brake wear limits. Additionally, the NTSB recommends that the airplane and brake manufacturers consider the variance and distribution of brake wear during a rejected takeoff and use this factor to develop brake wear replacement limits.