Federal Aviation Administration March 24, 2015 – Federal Register Recent Federal Regulation Documents

This action extends the prohibition of flight operations within the Tripoli (HLLL) Flight Information Region (FIR) by all: U.S. air carriers; U.S. commercial operators; persons exercising the privileges of an airman certificate issued by the FAA, except when such persons are operating a U.S.-registered aircraft for a foreign air carrier; and operators of U.S.-registered civil aircraft, except operators of such aircraft that are foreign air carriers. The extension of the expiration date is necessary to address a potential hazard to persons and aircraft engaged in such flight operations. Additionally, the FAA is amending the prohibition to make clear that operations by sub-contractors under a U.S. Government department, agency, or instrumentality's contract, grant, or cooperative agreement may be included in an approval request and to remove an obsolete reference to paragraph 8 of United Nations Security Council Resolution (UNSCR) 1973. The FAA is also revising the approval conditions that will apply to operations authorized by other U.S. Government departments, agencies, and instrumentalities that are approved by the FAA, and the information about requests for exemption, to reflect the termination of statutory authorization for the FAA premium war risk insurance program.

We propose to adopt a new airworthiness directive (AD) for certain Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 188 series airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating that the upper and lower wing skin planks at the attachment of the main landing gear (MLG) ribs at certain wing-stations are subject to widespread fatigue damage (WFD). This proposed AD would require an inspection (for cracking) and modification of the chordwise fastener rows of the upper and lower wing planks at the attachments to the MLG ribs at certain wing-stations. We are proposing this AD to prevent fatigue cracking of the upper and lower wing skin planks at the attachment of the MLG ribs, which could result in failure of the wing.

We propose to adopt a new airworthiness directive (AD) for Airbus Helicopters Deutschland GmbH (AHD) (previously Eurocopter Deutschland GmbH) Model MBB-BK 117 A-1, A-3, A-4, B-1, B-2, C-1, and C- 2 helicopters. This proposed AD would require an initial and recurring inspection of the N2 control arm and, depending on the outcome of the inspection, repairing or replacing the N2 control arm. This proposed AD is prompted by a report of a heavily corroded and broken N2 control arm. The proposed actions are intended to detect corrosion, a crack, or a scratch in the N2 control arm, which could lead to failure of the N2 control arm, a drop in rotor speed, and subsequent loss of control of the helicopter.