# Airworthiness Directives; Boeing Model 727-100 and -100C Series Airplanes
> **Rule** · Final rule. · Published 1999-10-07 · Effective 1999-11-12 · 64 FR 54513
## Document
- **Document number:** 99-25767
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 727-100 and -100C Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 54513
- **Publication date:** 1999-10-07
- **Effective date:** 1999-11-12
- **FAA docket:** Docket No. 98-NM-367-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 727-100 and -100C series airplanes, that requires replacement of certain skin panels of the lower fuselage with non-bonded skin panels. This amendment is prompted by reports of corrosion of the skin panels of the lower fuselage on airplanes with hot-bonded doublers. The actions specified by this AD are intended to prevent degradation of the structural integrity of certain skin panels of the lower fuselage, which could result in loss of airplane pressurization.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/10/07/99-25767/airworthiness-directives-boeing-model-727-100-and--100c-series-airplanes)
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