# Proposed AD FAA-2023-1710: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-22-16
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 14, 2023, 88 FR 54946
- Comments due: September 28, 2023
- Became: [AD 2023-22-16](https://openairdocs.org/ad/2023-22-16)
- Docket: FAA-2023-1710 (https://www.regulations.gov/docket/FAA-2023-1710, where comments are filed)
- Project: MCAI-2023-00243-T
- FR document: 2023-17000
- Official PDF: https://openairdocs.org/files/sha256/5e/fc/5efc059403207fdb10de79c5c5077723b9ed599ff7e3baf41cb1505fcee21bbb (from https://www.govinfo.gov/content/pkg/FR-2023-08-14/pdf/2023-17000.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/08/14/2023-17000/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-17000-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1710

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. This proposed AD was prompted by reports from the supplier that sensing elements of the bleed air leak detection system were manufactured with insufficient salt fill, which can result in an inability to detect hot bleed air leaks. This proposed AD would require testing of all affected overheat detection sensing elements of the bleed air leak detection system, and replacement if necessary. This proposed AD would also prohibit the installation of affected parts. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 14, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-17000, comments due Sep 28, 2023 (https://www.federalregister.gov/documents/2023/08/14/2023-17000/airworthiness-directives-bombardier-inc-airplanes)

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