Continuous Lower Energy, Emissions and Noise (CLEEN) Phase IV Program: Q&A Responses and FINAL SIR Release

Office has posted an update to the responses to the questions received following the initial Draft SIR. These responses are available for review by all interested parties. All other information posted by the FAA Acquisition Office on Monday, March 30, 2026 regarding the Continuous Lower Energy, Emis

sions and Noise (CLEEN) Phase IV Program: Q&A Responses and FINAL SIR Release remains the same. Monday, March 30, 2026 The FAA Acquisition Office has posted responses to questions received following the initial Draft SIR. These responses ar