# Proposed AD FAA-2005-20590: GROB-WERKE Model G120A Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-11-08
- Products: Grob-Werke
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 1, 2005, 70 FR 16769
- Comments due: May 3, 2005
- Became: [AD 2005-11-08](https://openairdocs.org/ad/2005-11-08)
- Docket: FAA-2005-20590 (https://www.regulations.gov/docket/FAA-2005-20590, where comments are filed)
- Project: 2005-CE-13-AD
- FR document: 05-6444
- Official PDF: https://openairdocs.org/files/sha256/cf/b3/cfb30d320eb24da0013b9124d35925f3335e7877f33da1c17f0418940fb56122 (from https://www.govinfo.gov/content/pkg/FR-2005-04-01/pdf/05-6444.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/04/01/05-6444/airworthiness-directives-grob-werke-model-g120a-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8B0CD52C06B1FB6D86256FD60057C0BA.0001
- Page: https://openairdocs.org/proposed/FAA-2005-20590

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all GROB-WERKE (GROB) Model G120A airplanes. This proposed AD would require you to replace the main landing gear front and rear spherical bearings with improved spherical bearings. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. We are issuing this proposed AD to replace front and rear main landing gear bearings that are exposed to high axial loads, which could result in failure of the landing gear bearing. This failure could lead to loss of control on landing.

## Notices in this docket

- Apr 1, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-6444, comments due May 3, 2005 (https://www.federalregister.gov/documents/2005/04/01/05-6444/airworthiness-directives-grob-werke-model-g120a-airplanes)

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