# Launch Safety: Lightning Criteria for Expendable Launch Vehicles
> **Rule** · Direct final rule; request for comments. · Published 2011-06-08 · Effective 2011-07-25 · 76 FR 33139
## Document
- **Document number:** 2011-14146
- **Category:** other
- **Type:** Rule
- **Action:** Direct final rule; request for comments.
- **Citation:** 76 FR 33139
- **Publication date:** 2011-06-08
- **Effective date:** 2011-07-25
- **FAA docket:** Docket No. FAA-2011-0181
## Abstract

The FAA is amending its lightning commit criteria to account for new information about the risks of natural and triggered lightning. This action amends flight criteria for mitigating against naturally occurring lightning and lightning triggered by the flight of an expendable launch vehicle through or near an electrified environment in or near a cloud. These changes will increase launch availability and implement changes already adopted by the United States Air Force.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/06/08/2011-14146/launch-safety-lightning-criteria-for-expendable-launch-vehicles)
---
*AI Analytics · CC0 1.0*