In a story reported by Reuters today, Airbus has admitted that manufacturing and design flaws have led to the outbreak of cracks being found in several A380 wing structures. In the article, Airbus goes on to say that the aircraft are safe and that proper steps are being taken to ensure that repairs are carried out. Airbus has not identified the carriers who have been having ongoing issues with these flaws.

I had posted about the initial A380 issues here, and also talked about the EASA directives that were issued in a posting here.

The article as reported by Reuters:

January 25, 2012
Airbus acknowledged a combination of manufacturing and design flaws on Wednesday as it confirmed the discovery of more examples of cracks inside the wings of A380 superjumbo jets, while insisting the world’s largest airliner is safe to fly.

A senior executive said Airbus had found a solution to the outbreak of cracks on a small number of parts inside the wings, which prompted European safety authorities to order compulsory safety inspections last week.

Airbus confirmed that it had discovered more examples of the cracks during the latest wing inspections, but declined to give further details before Friday’s deadline for completing a first phase of checks.

“The A380 is safe to fly,” Tom Williams, executive vice president of programs at Airbus, said.

The cracks were caused by a combination of the choice of aluminum alloy for certain wing brackets as well as stresses imposed at two stages of the manufacturing process, he said.

Williams flew to Dublin to give an unscheduled address at a conference followed by a series of briefings as Airbus stepped up efforts to dampen any concerns about the aircraft’s safety.

Airbus had already dismissed calls by an Australian engineering union to ground the aircraft, saying this had not been demanded by safety regulators who would be only too quick to ban flights if they believed safety was at risk.

European authorities have however ordered inspections on almost a third of the superjumbo fleet after two types of cracks were discovered within weeks of each of other on what Airbus described as a handful of L-shaped brackets inside the wing.

Since then, similar cracks have been found inside the wings of at least one of the superjumbos examined under the directive, industry sources said on Tuesday.

Airbus officials said it was assumed that most of the aircraft being tested would show evidence of the second and more significant type of crack, but that their technical fixes would address this well before they became a potential hazard.

It declined to say which airline had found cracks during inspections but the spotlight is expected to fall on Singapore Airlines which has said it is inspecting six aircraft under a first phase of checks of the most heavily used jets.

Singapore Airlines said it was carrying out inspections as required and would give an update once they were completed. The checks involve emptying and venting fuel tanks for about 24 hours followed by a visual check via a manhole under the wing.