Boeing will recommend more frequent maintenance checks on 767 aircraft
CNN article on B767 vibrations
Boeing will recommend more frequent maintenance checks on 767 aircraft - CNN.com |
Wasn't that why CASA grounded the Ansett 767s on Christmas Eve 2000?
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From my US mole:
CRACKS ON 767s PROMPT CONCERNS: Structural cracks discovered recently on at least two American Airlines Boeing 767 jetliners, including one jet that air-safety regulators believe easily could have lost an engine, are prompting concerns that some of the problems may turn out to be more widespread. Over the past two weeks, American, with oversight from the Federal Aviation Administration, has checked the bulk of its wide-body 767 fleet to look for possible cracks in critical components that attach engines to the wings. On Monday, the FAA said problems were found on three planes. The agency said it was working with American and manufacturer Boeing to "identify the source of the cracking" and was considering new industry-wide safety mandates. "We are considering additional action, including requiring more frequent inspections" of the suspect parts, called engine pylons, according to an FAA spokesman. American spokesman Tim Wagner disputed the FAA's tally of affected planes. He said the recent flurry of inspections found two planes with pylon-related cracks and the problems "were caught when they should have been." Boeing, which has been working closely with the FAA to identify reasons for the cracks and assess their significance, didn't have any immediate comment. The size and type of some of the cracks discovered in the pylons surprised Boeing, which now is drafting a service bulletin that in the next few days is likely to recommend substantially stepped-up inspections by virtually all 767 operators, according to people familiar with the details. The FAA, which has authority to mandate the changes, is expected to adopt most of Boeing's guidelines. The issue is attracting high-level attention inside the FAA, Boeing and American partly because for years there have been relatively strict requirements to inspect certain parts of all 767 engine pylons after every 1,500 flights. Despite the frequent inspections, these people say, a routine check of one American jet for a different issue found a combination of cracks that hadn't been seen before and was deemed by FAA officials to pose a significant hazard. Separately, American and the FAA are examining another complex, but unrelated structural issue that also has potentially significant safety implications for the airline's Boeing 767 fleet. Engineering experts, according to people familiar with the matter, continue to assess whether large, upwardly curved panels attached to the wingtips of some American 767s have caused or contributed to certain cracks discovered in a section of the structural backbone of a few planes. Called winglets and installed on many types of commercial and business jets, the additions are designed to increase fuel efficiency. (Andy Pasztor, Wall Street Journal - 6/22) |
Originally Posted by GWYN
(Post 5776072)
Wasn't that why CASA grounded the Ansett 767s on Christmas Eve 2000?
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