Action
Supplemental Notice of Proposed Rulemaking (SNPRM).
Summary
The FAA is revising a previous proposal to increase the number of digital flight data recorder (DFDR) parameters required for all Boeing 737 series airplanes. Based on safety recommendations from the National Transportation Safety Board (NTSB) following the investigations of two accidents and other incidents involving 737s, the FAA proposed the addition of flight recorder equipment to monitor the rudder system on 737s. Since that time, the FAA has mandated significant changes to the rudder system on these airplanes. Accordingly, this new proposed rule would apply to a different set of airplanes than originally anticipated. We are requesting comment on this change in applicability and are requesting updated economic information regarding installation of the proposed monitoring equipment. The original proposed rule also sought to amend the flight data recorder (FDR) requirements of part 125 that would affect all airplanes operated under that part or under deviation from that part; we have included that same proposal in this SNPRM.