Sterile Switch

Illuminates the amber sterile light on the attendant lights.

Normal procedures

Departure	After the last door is locked (check doors on MFD)	On
	Seatbelt sign off, or prior to seatbelt sign off if in turbulence	Off
Arrival	20,000' (regardless of seatbelt sign)	On
	Seatbelt sign off at gate	Off