# Proposed AD FAA-2022-0156: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-23-10
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 25, 2022, 87 FR 17035
- Comments due: May 9, 2022
- Became: [AD 2022-23-10](https://openairdocs.org/ad/2022-23-10)
- Docket: FAA-2022-0156 (https://www.regulations.gov/docket/FAA-2022-0156, where comments are filed)
- Project: AD-2021-01474-T
- FR document: 2022-06315
- Official PDF: https://openairdocs.org/files/sha256/44/cf/44cfe09cdd2280bd281755640b570168e4b0417571235e236af7254589df98e2 (from https://www.govinfo.gov/content/pkg/FR-2022-03-25/pdf/2022-06315.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/03/25/2022-06315/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-06315-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0156

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) AD 2021-06-03, which applies to all The Boeing Company Model 777F series airplanes. AD 2021-06-03 requires deactivating the potable water system. Since the FAA issued AD 2021-06-03, Boeing developed new actions to address the unsafe condition, which terminate the action required by AD 2021-06-03. This proposed AD would retain the actions required by AD 2021-06-03 and would require installing a shroud to the water supply line in the forward cargo compartment, and performing a leak test of the potable water system. For certain airplanes, this proposed AD would also require replacing tubes and hoses from the water supply line and installing a shroud to the water return line. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 25, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-06315, comments due May 9, 2022 (https://www.federalregister.gov/documents/2022/03/25/2022-06315/airworthiness-directives-the-boeing-company-airplanes)

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