# Airworthiness Directives; Boeing Model 727-100, -100C, and -200 Series Airplanes
> **Rule** · Final rule. · Published 2001-05-07 · Effective 2001-06-11 · 66 FR 22910
## Document
- **Document number:** 01-10939
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 66 FR 22910
- **Publication date:** 2001-05-07
- **Effective date:** 2001-06-11
- **FAA docket:** Docket No. 99-NM-74-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 727-100, -100C, and -200 series airplanes, that, for certain airplanes, requires a one-time inspection of certain fuselage circumferential skin joints to determine the type of fasteners installed, and replacement of any aluminum fasteners with steel fasteners, if necessary; or modification of certain fuselage circumferential skin joints; as applicable. For certain other airplanes, this amendment also requires repetitive inspections to detect corrosion, sealant deterioration, cracking, or disbonding; repair, if necessary; and modification of certain fuselage circumferential skin joints. This amendment is prompted by reports of corrosion between the body skins and cold-bonded doublers at the fuselage circumferential skin joints. The actions specified by this AD are intended to prevent delamination of the cold-bonded doublers, which could result in corrosion of the body skins and doublers, and consequent reduced structural capability of the fuselage circumferential skin joints.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/05/07/01-10939/airworthiness-directives-boeing-model-727-100--100c-and--200-series-airplanes)
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