Federal Aviation Administration March 25, 2021 – Federal Register Recent Federal Regulation Documents

This action amends the Class E airspace extending upward from 700 feet above the surface at Fosston Municipal Airport-Anderson Field, Fosston, MN, and Little Falls/Morrison County Airport-Lindbergh Field, Little Falls, MN. This action is the result of airspace reviews caused by the decommissioning of the Fosston and Little Falls non-federal non- directional beacons (NDBs). The names and geographic coordinates of the airports are also being updated to coincide with the FAA's aeronautical database.

The FAA is adopting a new airworthiness directive (AD) for all Air Tractor, Inc., (Air Tractor) Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, AT-504, AT-602, AT- 802, and AT-802A airplanes. This AD was prompted by reports of cracks in the flap torque tube actuator attachment brackets that may cause the flap actuator to detach from the flap torque tube. This AD requires repetitive visual and dye penetrant inspections of the flap actuator attachment bracket welds for cracks and replacement if cracks are identified. The FAA is issuing this AD to address the unsafe condition on these products.

These special conditions are issued for the Mitsubishi Aircraft Corporation (MITAC) Model MRJ-200 airplane. This airplane will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport- category airplanes. This design feature is an Automatic Takeoff Thrust Control System (ATTCS), referred to as an Automatic Power Reserve (APR), to set the performance level for approach-climb operation after an engine failure. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.