# Proposed AD FAA-2016-7270: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-18-16
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 28, 2016, 81 FR 41894
- Comments due: August 12, 2016
- Became: [AD 2017-18-16](https://openairdocs.org/ad/2017-18-16)
- Docket: FAA-2016-7270 (https://www.regulations.gov/docket/FAA-2016-7270, where comments are filed)
- Project: 2015-NM-116-AD
- FR document: 2016-14966
- Official PDF: https://openairdocs.org/files/sha256/19/47/194725c460280343f95182b15c5d52cbafafe02cbedf8204c6f4c52583b99be8 (from https://www.govinfo.gov/content/pkg/FR-2016-06-28/pdf/2016-14966.pdf)
- Federal Register: https://www.federalregister.gov/documents/2016/06/28/2016-14966/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/45D76E70AD226C5886257FE0004C7CE7.0001
- Page: https://openairdocs.org/proposed/FAA-2016-7270

## Summary

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-700 and -700C series airplanes. This proposed AD was prompted by a report that for airplanes with blended winglets, the nose-up pitch trim limit and associated warning for the horizontal stabilizer control system will allow take-off with incorrect trim settings. This proposed AD would require, depending on airplane configuration, replacing the pitch trim light plates on the flight deck control stand, relocating the position warning horn switches of the horizontal stabilizer, revising the software, removing the placard, and doing related investigative and corrective actions if necessary. We are proposing this AD to prevent take-off with incorrect settings of the horizontal stabilizer pitch trim system. Settings outside of the appropriate pitch trim limits could result in loss of controllability of the airplane during take-off.

## Notices in this docket

- Jun 28, 2016: Notice of proposed rulemaking (NPRM). (first notice), FR document 2016-14966, comments due Aug 12, 2016 (https://www.federalregister.gov/documents/2016/06/28/2016-14966/airworthiness-directives-the-boeing-company-airplanes)

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