# Special Conditions: Avionics Design Services Ltd., Textron Model 550/S550/560/560XL Airplanes; Rechargeable Lithium Batteries and Battery Systems
> **Rule** · Final special conditions; request for comments. · Published 2017-03-17 · Effective 2017-03-17 · 82 FR 14119
## Document
- **Document number:** 2017-05334
- **Category:** other
- **Type:** Rule
- **Action:** Final special conditions; request for comments.
- **Citation:** 82 FR 14119
- **Publication date:** 2017-03-17
- **Effective date:** 2017-03-17
- **FAA docket:** Docket No. FAA-2016-9401
## Abstract

These special conditions are issued for the Textron Model 550/ S550/560/560XL airplanes. These airplanes, as modified by Avionics Design Services Ltd., will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport-category airplanes. This design feature is rechargeable lithium batteries and battery systems installed in the airplanes. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/03/17/2017-05334/special-conditions-avionics-design-services-ltd-textron-model-550s550560560xl-airplanes-rechargeable)
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