# Airworthiness Directives; Boeing Model 707 and 720 Series Airplanes
> **Rule** · Final rule. · Published 2002-02-04 · Effective 2002-03-11 · 67 FR 5042
## Document
- **Document number:** 02-2319
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 707 and 720 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 67 FR 5042
- **Publication date:** 2002-02-04
- **Effective date:** 2002-03-11
- **FAA docket:** Docket No. 2000-NM-381-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 707 and 720 series airplanes, that requires installation of a new support structure for the trailing edge beam and main landing gear uplock mechanism. This action is necessary to prevent cracking in the frame and adjacent structure near the attach bolt of the main landing gear uplock mechanism, which could lead to compromised structural integrity. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/02/04/02-2319/airworthiness-directives-boeing-model-707-and-720-series-airplanes)
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