# Proposed AD 2000-NM-68-AD: Bombardier Model CL-600-2B19 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-22-09
- Action: Supplemental notice of proposed rulemaking; reopening of comment period.
- Published: March 23, 2001, 66 FR 16156
- Comments due: April 17, 2001
- Became: [AD 2001-22-09](https://openairdocs.org/ad/2001-22-09)
- Docket: 2000-NM-68-AD
- FR document: 01-7174
- Official PDF: https://openairdocs.org/files/sha256/58/83/58831c4df34d40e4b0169f600af53265d664b1244c6d4501ff8187e84a64fcf4 (from https://www.govinfo.gov/content/pkg/FR-2001-03-23/pdf/01-7174.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/03/23/01-7174/airworthiness-directives-bombardier-model-cl-600-2b19-series-airplanes
- Page: https://openairdocs.org/proposed/2000-NM-68-AD

## Summary

This document revises an earlier proposed airworthiness directive (AD), applicable to certain Bombardier Model CL-600-2B19 series airplanes, that would have required repetitive eddy current inspections for cracking of the main landing gear (MLG) main fittings, and replacement with a new or serviceable MLG, if necessary. This new action revises the proposed rule by continuing to require the repetitive eddy current inspections of the MLG; and adds requirements to service the MLG shock struts, inspect the MLG shock struts for nitrogen pressure, visible chrome dimension, and oil leakage, and perform corrective actions, if necessary. The actions specified by this new proposed AD are intended to prevent failure of the MLG main fitting, which could result in collapse of the MLG upon landing. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Aug 23, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-21462, comments due Sep 22, 2000 (https://www.federalregister.gov/documents/2000/08/23/00-21462/airworthiness-directives-bombardier-model-cl-600-2b19-series-airplanes)
- Mar 23, 2001: Supplemental notice of proposed rulemaking; reopening of comment period., FR document 01-7174, comments due Apr 17, 2001 (https://www.federalregister.gov/documents/2001/03/23/01-7174/airworthiness-directives-bombardier-model-cl-600-2b19-series-airplanes)

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