FAA warns of 777 fuel tank cracking risk

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US aviation regulators have issued an updated directive regarding a problem with cracking on all aircraft models Boeing 777according to a notice posted online Tuesday.

The Federal Aviation Administration (FAA) of the United States urgently published a airworthiness directive (A.D. For Airworthiness Directive) to address errors made by Boeing in a Requirements Bulletin (RB), which meant that the fuel tanks of some Boeing 777s were not properly protected.

This AD “was prompted by a report of a crack found in the lower chord of the front spar”, she indicates in the Federal Register notice. Errors in the previous directive “also introduced a new unsafe condition related to the application of certain retainer cap gaskets”, it is indicated. This defect poses a safety risk in the form of a fuel leak, which in more serious cases could affect the structural integrity of the aircraft.

Although Boeing submitted an initial error report in late 2022, the company has not produced “detailed and complete documentation of these errors, which was only received at the end of July 2023” due to the length and complexity of the requirements bulletin, the FAA said in the notice. Although Boeing intends to revise the bulletin, the FAA issued the new guidance because “ this work will take longer to complete than the risk to public safety allows”indicated the American agency.

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