# Special Conditions: Bell Helicopter Textron Canada Limited Model 407 Helicopter, Installation of a Hoh Aeronautics, Inc. Autopilot/Stabilization Augmentation System (AP/SAS)
> **Rule** · Final special conditions; request for comments. · Published 2011-02-25 · Effective 2011-02-14 · 76 FR 10489
## Document
- **Document number:** 2011-4229
- **Category:** other
- **Type:** Rule
- **Action:** Final special conditions; request for comments.
- **Citation:** 76 FR 10489
- **Publication date:** 2011-02-25
- **Effective date:** 2011-02-14
- **FAA docket:** Docket No. SW025
## Abstract

These special conditions are issued for the modification of the Bell Helicopter Textron Canada Limited (Bell) model 407 helicopter. This model helicopter will have novel or unusual design features when modified by installing the Hoh Aeronautics, Inc. (Hoh) complex Autopilot/Stabilization Augmentation System (AP/SAS) that has potential failure conditions with more severe adverse consequences than those envisioned by the existing applicable airworthiness regulations. These special conditions contain the added safety standards the Administrator considers necessary to ensure the failures and their effects are sufficiently analyzed and contained.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/02/25/2011-4229/special-conditions-bell-helicopter-textron-canada-limited-model-407-helicopter-installation-of-a-hoh)
---
*AI Analytics · CC0 1.0*