# Proposed AD FAA-2020-0881: Piper Aircraft, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-11-16
- Products: Piper
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 23, 2021, 86 FR 15439
- Comments due: May 7, 2021
- Became: [AD 2021-11-16](https://openairdocs.org/ad/2021-11-16)
- Docket: FAA-2020-0881 (https://www.regulations.gov/docket/FAA-2020-0881, where comments are filed)
- Project: 2018-CE-024-AD
- FR document: 2021-05584
- Official PDF: https://openairdocs.org/files/sha256/87/15/8715eeb261e5f4ff39abb7f620742b6dd1a3722bd24c7f5f09f2b0ff0bafa3cc (from https://www.govinfo.gov/content/pkg/FR-2021-03-23/pdf/2021-05584.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/03/23/2021-05584/airworthiness-directives-piper-aircraft-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4EBE29E283A567B6862586A10057A264.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0881

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 79- 01-03, which applies to certain Piper Aircraft, Inc. (Piper) Model PA- 36-285 airplanes, and AD 83-20-03, which applies to Piper Models PA-36- 285, PA-36-300, and PA-36-375 airplanes. AD 79-01-03 requires repetitive inspections of the spar carry through assembly until it is replaced with a different part numbered spar carry through assembly. AD 83-20-03 establishes life limits for the wing spar structural components. Since the FAA issued AD 79-01-03 and AD 83-20-03, the FAA identified inspection and life limit requirements that were inadvertently omitted from those ADs. This proposed AD would retain the requirements in AD 79-01-03 and AD 83-20-03 and require the spar carry through assembly inspection from AD 79-01-03 for additional airplanes and add life limits for certain wing structural components previously omitted from AD 83-20-03 for certain serial numbered airplanes. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 23, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-05584, comments due May 7, 2021 (https://www.federalregister.gov/documents/2021/03/23/2021-05584/airworthiness-directives-piper-aircraft-inc-airplanes)

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