# Proposed AD FAA-2012-0142: Bombardier, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-18-11
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 20, 2012, 77 FR 16193
- Comments due: May 4, 2012
- Became: [AD 2012-18-11](https://openairdocs.org/ad/2012-18-11)
- Docket: FAA-2012-0142 (https://www.regulations.gov/docket/FAA-2012-0142, where comments are filed)
- Project: 2010-NM-275-AD
- FR document: 2012-6622
- Official PDF: https://openairdocs.org/files/sha256/5d/25/5d255c46c00fbcae91af1d4e417ea932b42c948cdc9da0105e471d1186020f03 (from https://www.govinfo.gov/content/pkg/FR-2012-03-20/pdf/2012-6622.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/03/20/2012-6622/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9E0E11FF59165609862579C7004B1553.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0142

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) airplanes. This proposed AD was prompted by reports of failures of a hydraulic accumulator's screw-cap/end cap while on the ground that resulted in loss of use of that hydraulic system and in high-energy impact damage to adjacent systems and structures. This proposed AD would require an inspection for part numbers; repetitive inspections for any cracking of certain hydraulic system accumulators, and replacement, if necessary; and revising the maintenance program to include a life limit for certain hydraulic system accumulators. We are proposing this AD to prevent loss of use of a hydraulic system, which could result in reduced controllability of the airplane.

## Notices in this docket

- Mar 20, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-6622, comments due May 4, 2012 (https://www.federalregister.gov/documents/2012/03/20/2012-6622/airworthiness-directives-bombardier-inc-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.