# Special Conditions: Boeing Model 767-300 and -300F Series Airplanes; Interaction of Systems and Structures
> **Rule** · Final special conditions; request for comments. · Published 2008-11-26 · Effective 2008-11-14 · 73 FR 71913
## Document
- **Document number:** E8-28024
- **Category:** other
- **Type:** Rule
- **Action:** Final special conditions; request for comments.
- **Citation:** 73 FR 71913
- **Publication date:** 2008-11-26
- **Effective date:** 2008-11-14
- **FAA docket:** Docket No. NM396 Special Conditions No. 25-376-SC
## Abstract

These special conditions are issued for the Boeing Model 767- 300 and -300F airplane as modified by Aviation Partners Boeing Supplemental Type Certificate (STC). The modified airplane has novel or unusual design features involving installation of blended winglets and a speedbrake wing-load-alleviation system. This system reduces loading on the wing. The applicable airworthiness regulations for the Boeing Model 767-300 and -300F do not contain adequate or appropriate safety standards for systems which alleviate loads on structures. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the applicable airworthiness standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/11/26/E8-28024/special-conditions-boeing-model-767-300-and--300f-series-airplanes-interaction-of-systems-and)
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