"This document applies to safety observers or spotters involved with the use of outdoor laser systems. It may be used in conjunction with SAE Aerospace Standard (AS4970) ""Human Factors Considerations for Outdoor Laser Operations in the Navigable Airspace."" Additional control measures may be applicable and are listed in ANSI Z136.6. Purpose The purpose of this document is to provide guidance to proprietors for the optimal use of safety observers during operation of a laser system. It also recommends the minimum requirements for a safety observer."
SAE ARP5535A-2015 history
2015SAE ARP5535A-2015 Observers for Laser Safety in the Navigable Airspace
2009SAE ARP5535-2009 Observers for Laser Safety in the Navigable Airspace
2003SAE ARP5535-2003 Observers for Laser Safety in the Navigable Airspace