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This information report defines requirements for a device that contains one or more permanently installed sensors on aircraft that identify, distinguish between, and measure either quantitatively or qualitatively gaseous compounds and/or airborne particulates associated with one or more sources intended to provide information to guide maintenance actions. The requirements are for a permanently installed and recording unit in flight to be used on the ground for maintenance troubleshooting purposes. This information report does not address interface installation of the sensor unit with the aircraft except it would be relevant to the sensor technology. The data collected by these sensors is not intended to assess impacts on aircraft occupant health and should not be used to make a finding of airworthiness of aircraft. Portable sensor options are addressed in a separate document AS 6923.

The purpose of this standard is to aid manufacturers in creating devices that will provide maintenance staff with objective, reliable data consistent with certain types of airborne contaminants (“sources”), captured either during an event or during maintenance troubleshooting on the ground, in both cases for post-flight interpretation on the ground.

This document provides information applicable to the design and development of portable and aircraft mounted cabin air contaminant sensors. This AIR complements any future portable or aircraft-mounted cabin air sensor standards.