# Proposed AD FAA-2008-1088: Dowty Propellers Propellers

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-21-07
- Published: January 10, 2014, 79 FR 1774
- Became: [AD 2008-21-07](https://openairdocs.org/ad/2008-21-07)
- Docket: FAA-2008-1088 (https://www.regulations.gov/docket/FAA-2008-1088, where comments are filed)
- Project: 2008-NE-15-AD
- FR document: C1-2013-30882
- Official PDF: https://openairdocs.org/files/sha256/ce/2e/ce2eaf8790b0ffc11e519dd2099552fa1ebae37fdd65f024de429110cf3191af (from https://www.govinfo.gov/content/pkg/FR-2014-01-10/pdf/C1-2013-30882.pdf)
- Federal Register: https://www.federalregister.gov/documents/2014/01/10/C1-2013-30882/airworthiness-directives-dowty-propellers-propellers
- Page: https://openairdocs.org/proposed/FAA-2008-1088

## Summary

We propose to revise airworthiness directive (AD) 2008-21-07 that applies to certain Dowty Propellers model R408/6-123-F/17 propellers. AD 2008-21-07 requires initial and repetitive inspections of the blade bonded metallic leading edge (L/E) guards for correct bonding until they accumulate more than 1,200 flight hours (FH) time in service. Since we issued AD 2008-21-07, Dowty Propellers has introduced updated service bulletins that identify terminating action to the requirements of AD 2008-21-07. This proposed AD would maintain the inspection and replacement requirements of AD 2008-21-07, provide an optional terminating action to those requirements, and add a new part number to the list of affected parts. We are proposing this AD to prevent the loss of the bonded metallic L/E guard of the propeller, which could result in damage to the propeller or to the airplane, or injury to personnel.

## Notices in this docket

- Dec 26, 2013: Notice of proposed rulemaking (NPRM). (first notice), FR document 2013-30882, comments due Feb 24, 2014 (https://www.federalregister.gov/documents/2013/12/26/2013-30882/airworthiness-directives-dowty-propellers)
- Jan 10, 2014: Proposed rule, FR document C1-2013-30882 (https://www.federalregister.gov/documents/2014/01/10/C1-2013-30882/airworthiness-directives-dowty-propellers-propellers)

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