# Proposed AD FAA-2021-0957: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-07-06
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 15, 2021, 86 FR 62960
- Comments due: December 30, 2021
- Became: [AD 2022-07-06](https://openairdocs.org/ad/2022-07-06)
- Docket: FAA-2021-0957 (https://www.regulations.gov/docket/FAA-2021-0957, where comments are filed)
- Project: AD-2021-00469-T
- FR document: 2021-24835
- Official PDF: https://openairdocs.org/files/sha256/19/9d/199d1cd4c57a321e7f1169984f127592b03a604549ceaa2c7f4ba21f012e2670 (from https://www.govinfo.gov/content/pkg/FR-2021-11-15/pdf/2021-24835.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/11/15/2021-24835/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2021-24835-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0957

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747-8F and 747-8 series airplanes. This proposed AD was prompted by a report of unusual flight instrument and engine indication and crew alerting system (EICAS) behavior. This proposed AD would require inspecting the left, center, and right electronic flight instrument system (EFIS)/EICAS interface unit (EIU) for certain serial numbers and replacement if necessary. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Nov 15, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-24835, comments due Dec 30, 2021 (https://www.federalregister.gov/documents/2021/11/15/2021-24835/airworthiness-directives-the-boeing-company-airplanes)

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