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Special conditions · electric or hybrid design · aircraft

Special Conditions: Viking Air, Ltd., Models DHC-6-100/-200/-300; Avmax Aviation Services, Inc., Installation of Rechargeable Lithium Batteries

Special conditions are rules the FAA writes for one design when the standard certification rules do not cover something new about it. These were published April 23, 2017 for Avmax Aviation Services, INC.. System: electric propulsion.

What it applies to

Applicant
Avmax Aviation Services, INC.
Makes
Viking Air Limited
Models
—
Published
April 23, 2017
Effective
April 23, 2017
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

These special conditions are issued for the Viking Air, Ltd., models DHC-6-100/-200/-300, Twin Otter, Turbopropeller airplanes. This airplane, as modified by Avmax Aviation Services, Inc., will have a novel or unusual design feature associated with the use of a replacement option of a lithium battery instead of nickel-cadmium and lead-acid rechargeable batteries. 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: FAA special conditions (final) from the Dynamic Regulatory System; the Federal Register carries the same notices.