Background: : In 2004, American Airlines was the lead airline working with Boeing to develop a Service Bulletin to correct wiring exposure and chafing in the MD-80 auxiliary hydraulic pump wire bundle. The concern was that exposure and chafing could cause fire in the wheel well. An Airworthiness Directive (AD) was issued in September 2006, giving MD-80 operators, including American, 18 months to address this issue. American completed the Service Bulletin in November 2006, followed by adjustments deemed necessary by American's structural engineers to comply with the AD well ahead of a March 2008 deadline.
In recent weeks the Federal Aviation Administration significantly increased its emphasis on monitoring the adherence to Airworthiness Directives that apply to various U.S. airlines. With respect to American Airlines' MD-80 fleet, we had a detailed issue that we believed had to be addressed immediately to remain compliant with the FAA; if found in non-compliance, we would have been instructed to stop flying our airplanes.
What is the specific nature of the issue?
The issue surrounds questions raised by the FAA about the way American implemented the Engineering Change Order (ECO) addressing the MD-80 auxiliary pump wiring Airworthiness Directive (AD). American fixed the item well within the specified AD timeframe. The work being done now centers on a need to change the way in which American complied with the AD regarding such items as the spacing of the ties on the wiring bundles and the direction of the retention clips and lacing cords. We are highly confident that this is not a safety of flight issue because the wire bundle is secure. It is a matter of how the work was done, not whether aircraft were protected from the threat of wire exposure and chafing that could cause fire.
Why ground the entire MD-80 fleet?
It became clear based on the number of questions the FAA raised that there would be a high percentage of aircraft that would not be found to be in full compliance of the Airworthiness Directive. Working with the FAA we were unable to find an alternative solution to regaining compliance – for example, a multi-day period to rectify the issues – so we had no choice but to ground the aircraft. While it has been a major disruption to AA's operation, everyone recognizes the need to ensure that the MD-80 fleet is in complete compliance and is working to restore the MD-80s back to service as quickly as possible.
Who is completing the work and why is it taking longer than the previous MD-80 inspections?
There are three levels of American employees accomplishing the work. American has assigned a team of employees – aviation maintenance technicians, quality assurance inspectors, and engineers – to inspect the aircraft and ensure full technical compliance, as well as to make any additional adjustments. As our aircraft return to service, the FAA is inspecting those aircraft to ensure compliance.
What is the airline doing for customers?
We are doing everything possible to take care of our customers as expeditiously as possible while facing the fact that our resources have been stretched to their limits. We are extremely sorry for the inconvenience and know that this kind of interruption of travel plans is unacceptable. While customers are dislocated we are providing meals, hotels and ground transportation; for those stranded overnight, we will offer vouchers for future travel on American Airlines. Customers who were inconvenienced with overnight stays can go to AA.com where a link will guide them to instructions on how to receive compensation.
What is the company doing to make sure it doesn't happen again?
American plans to contract with an independent third party to review American's compliance processes. This work will help ensure that all procedures strictly adhere to the technical elements of every directive so American can avoid this type of schedule disruption in the future.
From American Airlines.
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