# Proposed AD FAA-2011-0639: Piper Aircraft, Inc. Models PA-24, PA- 24-250, and PA-24-260 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-17-06
- Products: Piper
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 22, 2011, 76 FR 36395
- Comments due: August 8, 2011
- Became: [AD 2012-17-06](https://openairdocs.org/ad/2012-17-06)
- Docket: FAA-2011-0639 (https://www.regulations.gov/docket/FAA-2011-0639, where comments are filed)
- Project: 2011-CE-016-AD
- FR document: 2011-15543
- Official PDF: https://openairdocs.org/files/sha256/ad/30/ad30278f1f767c829bb5decdc3f1fb79e73779cfced560b07a3084989c209714 (from https://www.govinfo.gov/content/pkg/FR-2011-06-22/pdf/2011-15543.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/06/22/2011-15543/airworthiness-directives-piper-aircraft-inc-models-pa-24-pa-24-250-and-pa-24-260-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BB613485DFD2770C862578B7004DCFF7.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0639

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require either replacement of the stabilator horn assembly or repetitive inspection of the stabilator horn assembly for corrosion or cracks with replacement of the stabilator horn assembly if any corrosion or cracks are found. This proposed AD was prompted by reports of cracks developing in the stabilator horn assembly. We are proposing this AD to detect and correct corrosion or cracks in the stabilator horn assembly. Corrosion or cracks could lead to failure of the stabilator horn. Consequently, failure of the stabilator horn could lead to a loss of pitch control in flight.

## Notices in this docket

- Jun 22, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-15543, comments due Aug 8, 2011 (https://www.federalregister.gov/documents/2011/06/22/2011-15543/airworthiness-directives-piper-aircraft-inc-models-pa-24-pa-24-250-and-pa-24-260-airplanes)

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