# Proposed AD FAA-2021-1076: 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 2022-19-09
- Products: Airbus Canada Limited Partnership
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 27, 2021, 86 FR 73194
- Comments due: February 10, 2022
- Became: [AD 2022-19-09](https://openairdocs.org/ad/2022-19-09)
- Docket: FAA-2021-1076 (https://www.regulations.gov/docket/FAA-2021-1076, where comments are filed)
- Project: MCAI-2021-00560-T
- FR document: 2021-27833
- Official PDF: https://openairdocs.org/files/sha256/db/e1/dbe112bf6b747799b7c49a9e4a2d2e5e130de4407319bd87a48e89dc526403be (from https://www.govinfo.gov/content/pkg/FR-2021-12-27/pdf/2021-27833.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/12/27/2021-27833/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2021-27833-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2021-1076

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500- 1A11 airplanes. This proposed AD was prompted by reports of in-service findings of corrosion on the flange of the main landing gear (MLG) lower spindle pin. This proposed AD would require repetitive inspections of the left and right MLG lower spindle pins to detect corrosion, and applicable repair or replacement if necessary, 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 27, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-27833, comments due Feb 10, 2022 (https://www.federalregister.gov/documents/2021/12/27/2021-27833/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c)

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