# Proposed AD FAA-2017-0805: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-07-04
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 25, 2017, 82 FR 40505
- Comments due: October 10, 2017
- Became: [AD 2018-07-04](https://openairdocs.org/ad/2018-07-04)
- Docket: FAA-2017-0805 (https://www.regulations.gov/docket/FAA-2017-0805, where comments are filed)
- FR document: 2017-17839
- Official PDF: https://openairdocs.org/files/sha256/c5/bf/c5bfe1cf9204360fab0956143fba4b6483323425c4bd761b89ed8c2e9d338e7e (from https://www.govinfo.gov/content/pkg/FR-2017-08-25/pdf/2017-17839.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/08/25/2017-17839/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1C3290F6E68DE890862581870052EE24.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0805

## Summary

We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD- 83), DC-9-87 (MD-87) airplanes, Model MD-88 airplanes, and Model MD-90- 30 airplanes. This proposed AD was prompted by a report of loss of airspeed indication due to icing. This proposed AD would require modifying the air data heat (ADH) system. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 25, 2017: Notice of proposed rulemaking (NPRM). (first notice), FR document 2017-17839, comments due Oct 10, 2017 (https://www.federalregister.gov/documents/2017/08/25/2017-17839/airworthiness-directives-the-boeing-company-airplanes)

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