# Airworthiness Directives; Saab AB, Saab Aeronautics (Type Certificate Previously Held by Saab AB, Saab Aerosystems) Airplanes
> **Rule** · Final rule. · Published 2016-06-27 · Effective 2016-08-01 · 81 FR 41432
## Document
- **Document number:** 2016-14871
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 81 FR 41432
- **Publication date:** 2016-06-27
- **Effective date:** 2016-08-01
- **FAA docket:** Docket No. FAA-2015-8432
## Abstract

We are adopting a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) and SAAB 340B airplanes. This AD was prompted by reports of ruptured horizontal stabilizer de-icing boots. This AD requires a revision of the applicable airplane flight manual (AFM), repetitive inspections of the horizontal stabilizer de-icing boots, and applicable corrective actions. We are issuing this AD to detect and correct damage of the de- icing boot; such damage could lead to a ruptured boot, severe vibrations, and possible reduced control of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/06/27/2016-14871/airworthiness-directives-saab-ab-saab-aeronautics-type-certificate-previously-held-by-saab-ab-saab)
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