# Proposed AD FAA-2004-19955: Hartzell Propeller Inc. Propellers

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-18-12
- Products: Hartzell Propellers
- Product type: Propeller
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 29, 2004, 69 FR 77961
- Comments due: February 28, 2005
- Became: [AD 2005-18-12](https://openairdocs.org/ad/2005-18-12)
- Docket: FAA-2004-19955 (https://www.regulations.gov/docket/FAA-2004-19955, where comments are filed)
- Project: 2004-NE-17-AD
- FR document: 04-28492
- Official PDF: https://openairdocs.org/files/sha256/c9/75/c975c64d0c1f98cbcaa79ddc76fe45e04a75e1db91469662ed8b64c7cc46559b (from https://www.govinfo.gov/content/pkg/FR-2004-12-29/pdf/04-28492.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/12/29/04-28492/airworthiness-directives-hartzell-propeller-inc-propellers
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FF619C95C93BD21086256F790050C904.0001
- Page: https://openairdocs.org/proposed/FAA-2004-19955

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Hartzell Propeller Inc. propellers. This proposed AD would require inspecting the propeller blades and other critical propeller parts for corrosion and mechanical damage. This proposed AD results from two events where a "Z-shank" blade failed and separated and the results of teardown inspections that detected corrosion in the blade bore. We are proposing this AD to detect corrosion and mechanical damage that can cause failure of a propeller, which could result in loss of control of the airplane.

## Notices in this docket

- Dec 29, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-28492, comments due Feb 28, 2005 (https://www.federalregister.gov/documents/2004/12/29/04-28492/airworthiness-directives-hartzell-propeller-inc-propellers)

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