# Proposed AD FAA-2018-0409: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-03-07
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 15, 2018, 83 FR 22420
- Comments due: June 29, 2018
- Became: [AD 2019-03-07](https://openairdocs.org/ad/2019-03-07)
- Docket: FAA-2018-0409 (https://www.regulations.gov/docket/FAA-2018-0409, where comments are filed)
- FR document: 2018-10213
- Official PDF: https://openairdocs.org/files/sha256/9d/2d/9d2d39db8043fa8acf93caf53a3aa338e88f3057f1c7e74c35fc10b0bef2b965 (from https://www.govinfo.gov/content/pkg/FR-2018-05-15/pdf/2018-10213.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/05/15/2018-10213/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C66117DF7817115D8625828E005484E1.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0409

## Summary

We propose to supersede Airworthiness Directive (AD) 2017-16- 05, which applies to certain The Boeing Company Model 737-600, -700, - 700C, -800, -900, and -900ER series airplanes. AD 2017-16-05 requires a one-time detailed visual inspection for discrepancies in the Krueger flap bullnose attachment hardware, and related investigative and corrective actions if necessary. Since we issued AD 2017-16-05, we received a report of a missing no. 2 Krueger flap bullnose hinge bolt from an airplane that was not included in the applicability of AD 2017- 16-05. This proposed AD would add airplanes and an additional inspection to determine if any Krueger flap no. 1, 2, 3, or 4 has been replaced, and related investigative and corrective actions. Since this is a rotable parts issue, the applicability of this AD has been expanded beyond the airplanes listed in the related service bulletin to include all airplanes on which a Krueger flap bullnose may be installed. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 15, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-10213, comments due Jun 29, 2018 (https://www.federalregister.gov/documents/2018/05/15/2018-10213/airworthiness-directives-the-boeing-company-airplanes)

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