May 28, 2008 -
According to NTSB recommendations, FAA should require operators of Boeing 757 airplanes to conduct one-time visual inspection of upper wing fixed trailing edge panel support beam clips for cracks, proper orientation, and spacers. Operators should replace cracked clips and reinstall clips that are improperly oriented. In addition, operators should be required to report any cracked clips found during inspection, and analyze information to determine if repetitive inspections are required.
The National Transportation Safety Board recommends that the Federal Aviation Administration:
Require operators of Boeing 757 airplanes to conduct a one-time visual inspection of the upper wing fixed trailing edge panel support beam clips for cracks, proper orientation, and spacers, and to replace cracked clips and reinstall any clips that are improperly oriented or that lack spacers, in accordance with Boeing Service Bulletin 757-57-0027, Revision 2, dated November 14, 1991. (A-08-22)
Require operators to report any cracked clips found during the one-time inspection, as requested in Safety Recommendation A-08-22, as well as the part number and orientation of the clips relative to the wing rear spar vertical stiffeners and whether spacers were present; then analyze this information to determine if repetitive inspections are required. (A-08-23)
Require Boeing to issue more explicit instructions and figures that clearly illustrate the correct orientation of the clips and spacers that attach the Boeing 757 panel support beam to the wing rear spar vertical stiffeners. (A-08-24)
Company Information: Name: National Transportation Safety Board Address: 490 L'Enfant Plaza, SW City: Washington State: DC ZIP: 20594 Country: USA Phone: 202-314-6000 http://www.ntsb.gov
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