# Proposed AD FAA-2018-0763: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-08-05
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 31, 2018, 83 FR 44508
- Comments due: October 15, 2018
- Became: [AD 2019-08-05](https://openairdocs.org/ad/2019-08-05)
- Docket: FAA-2018-0763 (https://www.regulations.gov/docket/FAA-2018-0763, where comments are filed)
- FR document: 2018-18812
- Official PDF: https://openairdocs.org/files/sha256/64/c3/64c32cde9c2db22b33887ab95136e684eb8d4247306e7b0b8d3796124c0f567c (from https://www.govinfo.gov/content/pkg/FR-2018-08-31/pdf/2018-18812.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/08/31/2018-18812/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/721F02BE38171018862582FA0049AAA3.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0763

## Summary

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 787-8 and 787-9 airplanes. This proposed AD was prompted by a determination that certain areas in the tire/wheel threat zones could be susceptible to damage, which could result in loss of braking on one main landing gear (MLG) truck, loss of nose wheel steering, and loss of directional control on the ground when below rudder effectiveness speed. This proposed AD would require installing hydraulic tubing, a pressure-operated check valve, and new flight control software. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 31, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-18812, comments due Oct 15, 2018 (https://www.federalregister.gov/documents/2018/08/31/2018-18812/airworthiness-directives-the-boeing-company-airplanes)

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