# Proposed AD FAA-2024-0454: 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 2025-16-01
- Products: Airbus Canada Limited Partnership
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (SNPRM).
- Published: April 1, 2025, 90 FR 14343
- Comments due: May 16, 2025
- Became: [AD 2025-16-01](https://openairdocs.org/ad/2025-16-01)
- Docket: FAA-2024-0454 (https://www.regulations.gov/docket/FAA-2024-0454, where comments are filed)
- Project: MCAI-2023-00923-T
- FR document: 2025-05489
- Official PDF: https://openairdocs.org/files/sha256/bd/5d/bd5da81348f965ec3988a6224f6cc55c8e2fcb4dca3751d87f8ea80a00a21231 (from https://www.govinfo.gov/content/pkg/FR-2025-04-01/pdf/2025-05489.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/04/01/2025-05489/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-05489-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2024-0454

## Summary

The FAA is revising a notice of proposed rulemaking (NPRM) that would have applied to all Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500-1A11 airplanes. This action revises the NPRM by adding a prohibition on flight dispatch under certain conditions. The FAA is proposing this airworthiness directive (AD) to address the unsafe condition on these products. Since these actions would impose an additional burden over those in the NPRM, the FAA is requesting comments on this SNPRM.

## Notices in this docket

- Mar 7, 2024: Notice of proposed rulemaking (NPRM). (first notice), FR document 2024-04569, comments due Apr 22, 2024 (https://www.federalregister.gov/documents/2024/03/07/2024-04569/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c)
- Apr 1, 2025: Supplemental notice of proposed rulemaking (SNPRM)., FR document 2025-05489, comments due May 16, 2025 (https://www.federalregister.gov/documents/2025/04/01/2025-05489/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c)

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