# Proposed AD FAA-2023-0670: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-12-05
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 3, 2023, 88 FR 27799
- Comments due: May 23, 2023
- Became: [AD 2023-12-05](https://openairdocs.org/ad/2023-12-05)
- Docket: FAA-2023-0670 (https://www.regulations.gov/docket/FAA-2023-0670, where comments are filed)
- Project: AD-2022-01427-T
- FR document: 2023-09433
- Official PDF: https://openairdocs.org/files/sha256/48/47/484707d5570ef40b29cbd029e09f7b3ca9de491261943a51d946da898ef31a37 (from https://www.govinfo.gov/content/pkg/FR-2023-05-03/pdf/2023-09433.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/05/03/2023-09433/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-09433-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-0670

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2022-03-05, which applies to all The Boeing Company Model 747-8F and 747-8 series airplanes and Model 777 airplanes. AD 2022-03-05 requires revising the limitations section of the existing airplane flight manual (AFM) to incorporate limitations prohibiting dispatching or releasing to airports, and approaches or landings on runways, when in the presence of 5G C-Band interference as identified by Notices to Air Missions (NOTAMs). Since the FAA issued AD 2022-03-05, the FAA determined that additional limitations are needed due to the continued deployment of new 5G C-Band base stations whose signals are expected to cover most of the contiguous United States at transmission frequencies between 3.7-3.98 GHz. This proposed AD would require revising the limitations section of the existing AFM to incorporate limitations prohibiting dispatching or releasing to airports, and approaches or landings on runways, due to the presence of 5G C-Band interference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 3, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-09433, comments due May 23, 2023 (https://www.federalregister.gov/documents/2023/05/03/2023-09433/airworthiness-directives-the-boeing-company-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.