# Proposed AD FAA-2011-0475: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2015-08-01
- Products: Boeing
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period.
- Published: July 1, 2014, 79 FR 37239
- Comments due: August 15, 2014
- Became: [AD 2015-08-01](https://openairdocs.org/ad/2015-08-01)
- Docket: FAA-2011-0475 (https://www.regulations.gov/docket/FAA-2011-0475, where comments are filed)
- Project: 2010-NM-199-AD
- FR document: 2014-15416
- Official PDF: https://openairdocs.org/files/sha256/3c/9b/3c9bb384499d7bcc8528fa9bb056fdc6dd6515771ba92ffad3b8dbdbd68a3a45 (from https://www.govinfo.gov/content/pkg/FR-2014-07-01/pdf/2014-15416.pdf)
- Federal Register: https://www.federalregister.gov/documents/2014/07/01/2014-15416/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5FA490F1B16BE8E386257D08004F7671.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0475

## Summary

We are revising an earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes. The NPRM proposed to require, for certain airplanes, installing new relays adjacent to two of the spoiler control modules. For certain other airplanes, the NPRM proposed to require torquing the bracket assembly installation nuts and ground stud nuts, and doing bond resistance tests between the bracket assemblies and the terminal lugs on the ground studs. The NPRM was prompted by numerous reports of unintended lateral oscillations during final approach, just before landing. This action revises the NPRM by adding actions that are necessary to address the identified unsafe condition. We are proposing this supplemental NPRM (SNPRM) to reduce the chance of unintended lateral oscillations near touchdown, which could result in loss of lateral control of the airplane, and consequent airplane damage or injury to flight crew and passengers. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.

## Notices in this docket

- May 24, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-12728, comments due Jul 8, 2011 (https://www.federalregister.gov/documents/2011/05/24/2011-12728/airworthiness-directives-the-boeing-company-model-757-airplanes)
- Jul 1, 2014: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period., FR document 2014-15416, comments due Aug 15, 2014 (https://www.federalregister.gov/documents/2014/07/01/2014-15416/airworthiness-directives-the-boeing-company-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.