Federal Aviation Administration July 8, 2019 – Federal Register Recent Federal Regulation Documents

The Federal Aviation Administration (FAA) announces its decision to adopt the United States Marine Corps (USMC) Supplemental Environmental Analysis for Temporary Activation of Playas Military Operations Area (SEA) for the establishment of a Temporary Military Operating Area (TMOA) in Playas, New Mexico. This notice announces that based on its independent review and evaluation of the SEA and supporting documents, the FAA is adopting the SEA and issuing a Finding of No Significant Impact (FONSI)/Record of Decision (ROD) for the establishment of the Playas TMOA.

The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. This AD was prompted by reports of low clearance between the variable frequency generator (VFG) power feeder cables and adjacent hydraulic lines and/or fuel lines in the aft equipment bay, which could cause chafing damage. This AD requires modifying the routing of the VFG power feeder cables and harnesses in the aft equipment bay. The FAA is issuing this AD to address the unsafe condition on these products.

The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model DHC-8-102, -103, and -106 airplanes; Model DHC-8-200 series airplanes; and Model DHC-8-300 series airplanes. This AD was prompted by the reported loss of an elevator spring tab balance weight prior to takeoff. This AD requires inspecting the two balance weights and the two hinge arms on each elevator spring tab, and corrective actions if necessary. The FAA is issuing this AD to address the unsafe condition on these products.

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus SAS Model A320-251N and -271N airplanes, and Model A321- 251N, -253N, -271N, and -272N airplanes. This proposed AD was prompted by reports that the regulated bleed temperature was measured above the design target with a temperature regulation shift phenomenon, and investigation results show that incorrect temperature regulation can degrade pneumatic system components located downstream of the pre- cooler. This proposed AD would require uploading improved bleed monitoring computer (BMC) software (SW), as specified in a European Aviation Safety Agency (EASA) AD, which will be incorporated by reference. The FAA is proposing this AD to address the unsafe condition on these products.

The FAA proposes to supersede Airworthiness Directive (AD) 2017-12-07, which applies to certain The Boeing Company Model 737-800, -900, and -900ER series airplanes. AD 2017-12-07 requires replacing the affected left temperature control valve and control cabin trim air modulating valve. Since the FAA issued AD 2017-12-07, the agency determined that the affected parts may be installed on airplanes outside the original applicability of AD 2017-12-07. This proposed AD would retain the requirements of AD 2017-12-07, expand the applicability to include those other airplanes, and add a new requirement for certain airplanes to identify and replace the affected parts. The FAA is proposing this AD to address the unsafe condition on these products.