Boeing has completed the dry runway brake tests of the 777-9 prototype, which lasted 63 days. The tests took longer than the planned 30 days, and the aircraft underwent 117 tire changes during this period. The team worked under variable weather conditions in Oklahoma, including wind, storms, and hail.
The first prototype, WH001, arrived at Clinton-Sherman Airport in March. The tests aimed to verify the reliability and performance of the braking system. Some tests were postponed or conducted at alternative runways due to weather conditions. The work was carried out around the clock, with engineers on-site supported by a logistics team.
The next phase of the program will include brake performance tests on wet runways and ice simulation tests. The FAA approved the start of the TIA 2D phase, allowing the certification process to continue.
