# Proposed AD FAA-2023-1817: 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 2024-07-11
- Products: Airbus Canada Limited Partnership
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 6, 2023, 88 FR 60899
- Comments due: October 23, 2023
- Became: [AD 2024-07-11](https://openairdocs.org/ad/2024-07-11)
- Docket: FAA-2023-1817 (https://www.regulations.gov/docket/FAA-2023-1817, where comments are filed)
- Project: MCAI-2023-00664-T
- FR document: 2023-19074
- Official PDF: https://openairdocs.org/files/sha256/c1/fc/c1fc0cf2157678e496622186094339e92cf51e8eab37f7c21ba6fdcf694e11c0 (from https://www.govinfo.gov/content/pkg/FR-2023-09-06/pdf/2023-19074.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/09/06/2023-19074/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-19074-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1817

## 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 design review that identified the fixed emergency locator transmitter (ELT) lithium batteries would not be sufficiently cooled by the outside air in the event of a thermal runaway event. This proposed AD would require replacing the ELT with a new ELT with redesigned batteries, 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

- Sep 6, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-19074, comments due Oct 23, 2023 (https://www.federalregister.gov/documents/2023/09/06/2023-19074/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c)

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