The current rest and duty regulations for Part 121 and 135 operations date back to 1985. In 2003, the FAA established a joint FAA/Industry Aviation Rulemaking Committee (ARC) to provide the agency recommendations regarding the safety and applicability standards for Parts 125 and 135. The ARC did achieve consensus on recommendations for revising the commuter and on-demand flight/rest requirements in Part 135. However, the FAA is yet to produce an NPRM on them. It is time to finish the work that was started years ago.