# Proposed AD FAA-2025-0215: 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 2025-20-08
- Products: Airbus Canada Limited Partnership
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 3, 2025, 90 FR 11033
- Comments due: April 17, 2025
- Became: [AD 2025-20-08](https://openairdocs.org/ad/2025-20-08)
- Docket: FAA-2025-0215 (https://www.regulations.gov/docket/FAA-2025-0215, where comments are filed)
- Project: MCAI-2024-00347-T
- FR document: 2025-03375
- Official PDF: https://openairdocs.org/files/sha256/db/69/db6935a88847515be572895fa61fe4b2bbf6f7bb4db1cae27c149f0c2def0faa (from https://www.govinfo.gov/content/pkg/FR-2025-03-03/pdf/2025-03375.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/03/03/2025-03375/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-03375-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-0215

## 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 events where the cargo bottle fail caution message was displayed. This proposed AD would require replacing affected low rate discharge (LRD) bottles, inspecting extinguishing discharge lines and tubes, and replacing extinguishing discharge lines and tubes, as applicable, and would also prohibit the installation of affected LRD bottles, as specified in a Transport Canada AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 3, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-03375, comments due Apr 17, 2025 (https://www.federalregister.gov/documents/2025/03/03/2025-03375/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c)

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