# Proposed AD FAA-2020-0683: 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 2020-26-20
- Products: Airbus Canada Limited Partnership
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 11, 2020, 85 FR 48480
- Comments due: September 25, 2020
- Became: [AD 2020-26-20](https://openairdocs.org/ad/2020-26-20)
- Docket: FAA-2020-0683 (https://www.regulations.gov/docket/FAA-2020-0683, where comments are filed)
- FR document: 2020-17466
- Official PDF: https://openairdocs.org/files/sha256/d6/36/d6368eb466bd5252f128f8577dcdeb10ef32c85e3fea3c4aa2a7ea3d7a87e258 (from https://www.govinfo.gov/content/pkg/FR-2020-08-11/pdf/2020-17466.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/08/11/2020-17466/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BF1E6F7F460E341B862585C1003F21D1.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0683

## 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 during installation on the final assembly line, a foreign object damage (FOD) protective end cap was not removed from an extraction duct of the crew oxygen system. The protective end cap must be removed to prevent a build-up of oxygen under the flight deck floor, which is a fire risk. This proposed AD would require inspecting the air extraction duct installation to determine if a protective end cap is installed, and removing any protective end cap found. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 11, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-17466, comments due Sep 25, 2020 (https://www.federalregister.gov/documents/2020/08/11/2020-17466/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c)

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