# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule; request for comments. · Published 2021-03-05 · Effective 2021-03-05 · 86 FR 12809
## Document
- **Document number:** 2021-04713
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 86 FR 12809
- **Publication date:** 2021-03-05
- **Effective date:** 2021-03-05
- **FAA docket:** Docket No. FAA-2021-0133
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 777F series airplanes. This AD was prompted by a report of a water supply line that detached at a certain joint located above an electronic equipment (EE) cooling filter, leading to water intrusion into the forward EE bay. This AD requires deactivating the potable water system. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/03/05/2021-04713/airworthiness-directives-the-boeing-company-airplanes)
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