This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist.

This Aeronautical Standard covers two basic types of instruments as follows: Type I - Float Instruments, Type II - Capacitance Instruments.

To specify minimum requirements for Fuel and Oil Quantity Instruments for use in aircraft, the operation of which may subject the instruments to the environmental conditions specified in Paragraph 3.3.