Transportation Department Docket FAA-2016-3699 Final Rule

2016-03562: Airworthiness Directives; The Boeing Company Airplanes

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Summary

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 787-8 airplanes. This AD requires revising the maintenance or inspection program, as applicable, to include an airworthiness limitation for repetitive inspections of the web fastener holes in the overwing flex-tees. This AD was prompted by a report that certain web fastener holes in the overwing flex-tees at the wing-to- body interface might not have been deburred properly when manufactured. Fastener holes without the deburr chamfer applied can develop fatigue cracking. We are issuing this AD to detect and correct cracking in the web fastener holes in the overwing flex-tees, which can weaken the primary wing structure so it cannot sustain limit load.

The agency’s own summary, as published.

What this changes

Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.

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