May 30, 2013 – Federal Register Recent Federal Regulation Documents

This document adopts as a final rule, with two changes, interim amendments to the U.S. Customs and Border Protection (``CBP'') regulations which were published in the Federal Register on March 19, 2012, as CBP Dec. 12-03, to implement the preferential tariff treatment and other customs-related provisions of the United States-Korea Free Trade Agreement entered into by the United States and the Republic of Korea.

We propose to rescind an airworthiness directive (AD) for PIAGGIO AERO INDUSTRIES S.p.A. Model P-180 airplanes. The existing AD resulted from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as partial detachment of the inner protective film of the composite nacelles. Since issuance of that AD, we have determined that the unsafe condition does not exist or is not likely to develop on affected type design airplanes, and therefore the AD should be rescinded. The proposed AD would allow the public the opportunity to comment on the FAA's determination of the unsafe condition no longer existing before it is officially rescinded.

We are adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company Model 500, 501, 550, 551, S550, 560, 560XL, and 650 airplanes. This AD was prompted by multiple reports of smoke and/or fire in the tailcone caused by sparking due to excessive wear of the brushes in the air conditioning (A/C) motor. This AD requires inspecting to determine if certain A/C compressor motors are installed and to determine the accumulated hours on certain A/C drive motor assemblies; repetitive replacement of the brushes in the drive motor assembly, or, as an option to the brush replacement, deactivation of the A/C system and placard installation; and return of replaced brushes to Cessna. We are issuing this AD to prevent the brushes in the A/C motor from wearing down beyond their limits, which could result in the rivet in the brush contacting the commutator causing sparks and consequent fire and/or smoke in the tailcone with no means to detect or extinguish the fire and/or smoke.

This rule provides an effective date for previously published regulations implementing the Treaty Between the Government of the United States of America and the Government of Australia Concerning Defense Trade Cooperation (referred to herein as ``the Treaty'').

We are adopting a new airworthiness directive (AD) for all Airbus Model A300 B4-601, B4-603, B4-620, B4-605R, and B4-622R airplanes. This AD was prompted by a report that the door frame shells of passenger doors 2 and 4 may not have sufficient structural strength to enable the airplane to operate safely. This AD requires reinforcing the door frame shells of passenger doors 2 and 4 on both sides of the fuselage. We are issuing this AD to prevent structural failure of the door frame shells, which could result in in-flight decompression of the airplane and consequent injury to passengers.