Summary
We propose to supersede Airworthiness Directive (AD) 2012-21- 04, which applies to all Airbus Model A300 series airplanes; Model A310 series airplanes; and 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). AD 2012-21-04 currently requires repetitive inspections for, and replacement of, any cracked hood halves of fuel pump canisters. Since we issued AD 2012-21-04, we allowed inspections of the outer tank and trim tank fuel pump canister hood halves to be terminated. However, we have received reports of new in-service events of outer tank fuel pump canister hood cracking. This proposed AD would retain the requirements of AD 2012-21-04, reinstate the terminated inspections, and add optional terminating actions. We are proposing this AD to address the unsafe condition on these products.