# Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), and 36 Airplanes
> **Rule** · Final rule. · Published 2005-07-05 · Effective 2005-08-09 · 70 FR 38578
## Document
- **Document number:** 05-12842
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 38578
- **Publication date:** 2005-07-05
- **Effective date:** 2005-08-09
- **FAA docket:** Docket No. FAA-2005-20872
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C- 21A), and 36 airplanes. This AD requires a one-time inspection of the center ball of the aileron control cable or cables for a defective swage, and corrective actions if necessary. This AD is prompted by a report indicating that an aileron cable failed on one affected airplane when the cable underwent a tension check. We are issuing this AD to prevent severe weakening of the aileron cable, and consequent reduced controllability of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/07/05/05-12842/airworthiness-directives-learjet-model-23-24-24a-24b-24b-a-24c-24d-24d-a-24e-24f-24f-a-25-25a-25b)
---
*AI Analytics · CC0 1.0*