# Airworthiness Directives; SOCATA-Groupe Aerospatiale Models TB 9, TB 10, TB 20, TB 21, and TB 200 Airplanes
> **Rule** · Final rule. · Published 2001-11-19 · Effective 2002-01-04 · 66 FR 57857
## Document
- **Document number:** 01-28333
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 66 FR 57857
- **Publication date:** 2001-11-19
- **Effective date:** 2002-01-04
- **FAA docket:** Docket No. 2001-CE-01-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that applies to all SOCATA--Groupe Aerospatiale (SOCATA) Models TB 9, TB 10, TB 20, TB 21, and TB 200 airplanes. This AD requires you to repetitively inspect the lower rudder hinge fitting for cracks. This AD also requires you to repair any crack found in accordance with a repair scheme obtained from the manufacturer through the Federal Aviation Administration (FAA). This AD is the result mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for France. The actions specified by this AD are intended to detect and correct fatigue cracks in the lower rudder hinge fitting. This condition could cause the lower rudder to detach from the control linkage with consequent loss of control of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/11/19/01-28333/airworthiness-directives-socata-groupe-aerospatiale-models-tb-9-tb-10-tb-20-tb-21-and-tb-200)
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