routineRule

AD FAA-2016-9520

Airworthiness Directives; The Boeing Company Airplanes

Summary

We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 777 airplanes. This AD was prompted by reports of cracks on the underwing longerons. This AD requires repetitive inspections of the left and right side underwing longerons for any crack, and related investigative and corrective actions if necessary. We are issuing this AD to address the unsafe condition on these products.

Directive Details

AD Number

FAA-2016-9520

Document Number

2017-16779

Type

Rule

Publication Date

August 21, 2017

Effective Date

September 25, 2017

Affected Manufacturer

The Boeing Company

Criticality

routine

Emergency

Docket ID

Docket No. FAA-2016-9520

Topics

Air transportationAircraftAviation safetyIncorporation by referenceSafety

Official Documents

View PDF View on Federal Register

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