Federal Aviation Administration April 8, 2014 – Federal Register Recent Federal Regulation Documents

We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 series airplanes, Model A300 B4-600, B4-600R, and F4- 600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes). This proposed AD was prompted by a report of chafing found on the overflow sensor harness of the surge tank, and subsequent contact between the electrical wiring and fuel tank structure. This proposed AD would require a one-time inspection for chafing of the overflow sensor harness and structural damage of the outer tank, and repair if necessary. This proposed AD would also require modification of the sensor harness. We are proposing this AD to prevent chafing of the harness and subsequent contact between the electrical wiring and fuel tank structure, which could result in electrical arcing and a fuel tank explosion and consequent loss of the airplane.

We propose to supersede airworthiness directive (AD) 2011-17- 08, which applies to all Airbus Model A330-200 series airplanes, Model A330-200 Freighter series airplanes, and Model A330-300 series airplanes. AD 2011-17-08 currently requires revising the maintenance program by incorporating certain Airworthiness Limitation Items (ALIs). Since we issued AD 2011-17-08, Airbus has revised a certain ALI document, which specifies more restrictive instructions and/or airworthiness limitations. This proposed AD would revise the maintenance or inspection program, as applicable, to incorporate new or revised structural inspection requirements. We are proposing this AD to detect and correct fatigue cracking, damage, and corrosion in certain structure, which could result in reduced structural integrity of the airplane.

The FAA is correcting a final rule published on March 21, 2014. In that final rule, the FAA amended its regulations to extend the prohibition against certain flights within the Tripoli Flight Information Region from March 21, 2014 to March 21, 2015. The FAA inadvertently cited an incorrect RIN number. This document corrects that error and also corrects an inadvertent amendment.