# Proposed AD FAA-2021-1067: Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-05-03
- Products: Airbus Canada Limited Partnership
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 17, 2021, 86 FR 71589
- Comments due: January 31, 2022
- Became: [AD 2022-05-03](https://openairdocs.org/ad/2022-05-03)
- Docket: FAA-2021-1067 (https://www.regulations.gov/docket/FAA-2021-1067, where comments are filed)
- Project: MCAI-2021-00857-T
- FR document: 2021-27289
- Official PDF: https://openairdocs.org/files/sha256/71/48/714827991880e700d4ef177dfd51e0c3a86509ef338bdff32967b063c923145e (from https://www.govinfo.gov/content/pkg/FR-2021-12-17/pdf/2021-27289.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/12/17/2021-27289/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2021-27289-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2021-1067

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD- 500-1A11 airplanes. This proposed AD was prompted by a report that some tie-rod assemblies may have been over-tightened during the installation of interior monuments (such as galleys, lavatories, and forward stowage or wardrobes). This proposed AD would require adjusting the tie-rod assemblies, as specified in a Transport Canada Civil Aviation (TCCA) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Dec 17, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-27289, comments due Jan 31, 2022 (https://www.federalregister.gov/documents/2021/12/17/2021-27289/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c)

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