# Proposed AD FAA-2021-0502: B-N Group Ltd. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-18-01
- Products: B-N Group
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 25, 2021, 86 FR 33576
- Comments due: August 9, 2021
- Became: [AD 2021-18-01](https://openairdocs.org/ad/2021-18-01)
- Docket: FAA-2021-0502 (https://www.regulations.gov/docket/FAA-2021-0502, where comments are filed)
- Project: 2018-CE-043-AD
- FR document: 2021-13463
- Official PDF: https://openairdocs.org/files/sha256/c6/3d/c63d49f7bfa43fb2da2d1015e09baf4142a8cf84d3e91c42e8159158aae17e17 (from https://www.govinfo.gov/content/pkg/FR-2021-06-25/pdf/2021-13463.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/06/25/2021-13463/airworthiness-directives-b-n-group-ltd-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/935510A5A06E3018862586FF00579F25.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0502

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain B-N Group Ltd. Models BN-2, BN-2A, BN-2A-2, BN-2A-3, BN-2A- 6, BN-2A-8, BN-2A-9, BN-2A-20, BN-2A-21, BN-2A-26, BN-2A-27, BN-2B-20, BN-2B-21, BN-2B-26, BN-2B-27, BN-2T, and BN-2T-4R airplanes. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as failure of the rudder final drive rod because of cracks in the region of the taper pins. This proposed AD would require repetitively inspecting the rudder final drive rod assembly and replacing the rudder final drive assembly, if necessary. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 25, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-13463, comments due Aug 9, 2021 (https://www.federalregister.gov/documents/2021/06/25/2021-13463/airworthiness-directives-b-n-group-ltd-airplanes)

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