# Proposed AD FAA-2023-0170: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-09-08
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 24, 2023, 88 FR 11825
- Comments due: April 10, 2023
- Became: [AD 2023-09-08](https://openairdocs.org/ad/2023-09-08)
- Docket: FAA-2023-0170 (https://www.regulations.gov/docket/FAA-2023-0170, where comments are filed)
- Project: MCAI-2022-00974-T
- FR document: 2023-03623
- Official PDF: https://openairdocs.org/files/sha256/f6/0d/f60df574f93849b2439d06e65c817efc989a1d434d348a7a678256a1f8f8795b (from https://www.govinfo.gov/content/pkg/FR-2023-02-24/pdf/2023-03623.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/02/24/2023-03623/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-03623-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-0170

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-2A12 airplanes. This proposed AD was prompted by a report that certain environmental control system (ECS) pre-cooler clamp assemblies may not conform to specifications. This proposed AD would require an inspection of the pre-cooler clamps and replacement of non-conforming pre-cooler clamps. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Feb 24, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-03623, comments due Apr 10, 2023 (https://www.federalregister.gov/documents/2023/02/24/2023-03623/airworthiness-directives-bombardier-inc-airplanes)

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