Federal Aviation Administration March 5, 2014 – Federal Register Recent Federal Regulation Documents

We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model airplanes. This proposed AD was prompted by reports of latently failed fuel shutoff valves discovered during fuel filter replacement. This proposed AD would require revising the maintenance or inspection program to include new airworthiness limitations. We are proposing this AD to detect and correct latent failures of the fuel shutoff valve to the engine, which could result in the inability to shut off fuel to the engine and, in case of certain engine fires, an uncontrollable fire that could lead to wing failure.

We are revising an earlier proposed airworthiness directive (AD) for certain Airbus Model A330-200 and -300 series airplanes; and Model A340-200 and -300 series airplanes. The NPRM proposed to supersede AD 2009-15-17 to continue to require inspections for damage to the protective treatments or any corrosion of all main landing gear (MLG) bogie beams, application of protective treatments, and corrective action if necessary. The NPRM also proposed to require modification of the MLG bogie beams, which would terminate the repetitive inspections for any modified bogie beam. The NPRM also proposed to allow optional methods of compliance for certain actions. The NPRM was prompted by reports of thin paint coats and paint degradation on enhanced MLG bogie beams, as well as reports that some airplanes have been inspected too early and not re-inspected as needed. This action revises the NPRM by revising the compliance times and adding a one-time inspection for airplanes that have been inspected too early. We are proposing this supplemental NPRM (SNPRM) to detect and correct damage or corrosion of the MLG bogie beams, which could cause a runway excursion event, bogie beam detachment from the airplane, or MLG collapse, which could result in damage to the airplane and injury to the occupants. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.

We propose to supersede Airworthiness Directive (AD) 2011-15- 09, which applies to certain Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes. AD 2011-15-09 currently requires repetitive inspections for proper operation of the main landing gear (MLG) alternate extension system (AES), and corrective actions if necessary. Since we issued AD 2011-15-09, we have determined that, for certain airplanes not affected by AD 2011-15-09, a different MLG AES cam mechanism assembly was installed resulting in input lever fractures and inability to open the MLG door; those assemblies could be subject to the same unsafe condition in AD 2011-15-09. This new proposed AD would require, for certain airplanes, new repetitive inspections for proper operation of the MLG AES, and corrective actions if necessary. This proposed AD would also require eventually replacing the MLG AES cam mechanism assembly with a new assembly, which would terminate the repetitive inspections for those airplanes. We are proposing this AD to prevent improper operation of the cam mechanism or rupture of the door release cable, which could result in loss of control of the airplane during landing.

The FAA is issuing this notice to advise the public of a meeting of the ARAC.

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777 airplanes. This AD requires, for certain airplanes, replacing radio altimeter transceivers with upgraded units, and, for all airplanes, replacing low range radio altimeter antennas with new antennas. This AD was prompted by operator reports of erratic low range radio altimeter (LRRA) operation while the airplane is airborne. We are issuing this AD to prevent adverse system responses and flight deck effects that could result in loss of controllability of the airplane or landing short of the runway during landing.

This rule amends, suspends, or revokes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.

We are adopting a new airworthiness directive (AD) for Airbus Helicopters Model AS350B, BA, B1, B2, B3, and D, and Model AS355E, F, F1, F2, and N helicopters with certain tail rotor (T/R) blades. This AD requires installing additional rivets to secure each T/R blade trailing edge tab (tab), and inspecting for evidence of debonding of the tab after the rivets are installed. This AD was prompted by reports of T/R blade tab debonding. The actions of this AD are intended to prevent loss of a T/R blade tab, which could result in excessive vibration and loss of control of the helicopter.

We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by reports of cracks found in the aft support fitting, the rear spar upper chord, and the rear spar web. This AD requires repetitive inspections for cracking of the aft support fitting for the main landing gear (MLG) beam, and the rear spar upper chord and rear spar web in the area of rear spar station (RSS) 224.14; and repair if necessary. We are issuing this AD to detect and correct such cracks, which could grow and result in a fuel leak and possible fire.