# Airworthiness Directives; McDonnell Douglas Model DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, DC-8-43, DC-8F-54, and DC-8F-55 Airplanes; and DC-8-50, DC-8-60, DC-8-60F, DC-8-70, and DC-8-70F Series Airplanes
> **Rule** · Final rule. · Published 2005-07-28 · Effective 2005-09-01 · 70 FR 43628
## Document
- **Document number:** 05-14684
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 43628
- **Publication date:** 2005-07-28
- **Effective date:** 2005-09-01
- **FAA docket:** Docket No. 2001-NM-343-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas airplane models. This AD requires a one-time test to determine the material of the upper inboard spar cap of the wing, and corrective actions if necessary. This action is necessary to prevent stress corrosion cracking in the forward tang of the upper inboard spar cap of the wing, which could result in structural damage to adjacent components of the wing and consequent reduced structural integrity of the airplane. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/07/28/05-14684/airworthiness-directives-mcdonnell-douglas-model-dc-8-11-dc-8-12-dc-8-21-dc-8-31-dc-8-32-dc-8-33)
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