# Proposed AD FAA-2026-4669: 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: Comment period closed
- Products: Airbus Canada Limited Partnership BD-500-1A10 and BD-500-1A11
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 29, 2026, 91 FR 39037
- Comments due: August 13, 2026
- Docket: FAA-2026-4669 (https://www.regulations.gov/docket/FAA-2026-4669, where comments are filed)
- Project: MCAI-2025-00426-T
- FR document: 2026-13023
- Official PDF: https://openairdocs.org/files/sha256/5f/32/5f327da58d8e7c0c39ce09c3a72b44820c647ac0f17220d4e3aea1e080700c7a (from https://www.govinfo.gov/content/pkg/FR-2026-06-29/pdf/2026-13023.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/06/29/2026-13023/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-13023-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-4669

## 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 AD was prompted by the discovery of a low clearance condition between a hydraulic motor pump harness and the airplane structure at the aft fuselage between certain frames, which was found during final airplane assembly. This proposed AD would require modification of the harness installation. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 29, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-13023, comments due Aug 13, 2026 (https://www.federalregister.gov/documents/2026/06/29/2026-13023/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c)

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