The comment period on a notice of proposed rulemaking (NPRM) to establish operational life limitations designed to prevent widespread fatigue damage primarily in large commercial transport aircraft (those with an mtow of more than 75,000 pounds) has been pushed from July 17 to September 18. The NPRM is one of several rulemaking actions that are part of the FAA’s aging-aircraft program. Currently manufactured jets operated under Parts 91 and Part 135 on-demand would be excluded from the retrofit requirement of the proposed rules. For more details, contact the FAA at (425) 227-2774.