airworthiness · Rule · Final rule. · Published 2012-05-08 · Effective 2012-06-12 · 77 FR 26937
Document
Document number
2012-9189
Federal Register citation
77 FR 26937
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2012-05-08
Effective date
2012-06-12
FAA docket
Docket No. FAA-2011-1066
Abstract
We are superseding an existing airworthiness directive (AD) for certain Airbus Model A300 B2-1C, B2K-3C, B2-203, B4-2C, B4-103, and B4-203 airplanes; and Model A300 B4-601, B4-603, B4-620, B4-622, B4- 605R, B4-622R, and F4-605R airplanes. That AD currently requires repetitive inspections for cracking in Gear Rib 5 of the main landing gear (MLG) attachment fittings at the lower flange, and repair if necessary; and provides an optional spot-facing modification around certain fastener holes, which would terminate certain repetitive inspections. This new AD mandates the optional spot-facing modification. This AD was prompted by new cases of cracks discovered during scheduled maintenance checks. We are issuing this AD to prevent cracking of the Gear Rib 5 right-hand and left-hand attachment fitting at the lower flanges of the MLG, which could result in failed bolts penetrating through the rear spar and into a fuel tank, consequent fuel loss, and reduced structural integrity of the airplane.