AM.I.H.K11

From the FAA library

• Aviation Maintenance Technician Handbook - Generalp. 3-26
  Chapter 3: Mathematics in Aviation Maintenance › Measurement Systems › Measurement Systems & Conversions

  Measurement Systems & Conversions The United States primarily uses the conventional (U.S. or English) system, although it is slowly integrating the metric system (SI). A recommendation to transition to the metric system within ten years was initiated in the 1970s. However ... this movement lost momentum, and the United States continues to use both measurement systems. Therefore, information to convert between the conventional (U.S. or English) system and the metric (SI) system has been included in Figure 3-23, Applied Mathematics Formula…

• Aviation Maintenance Technician Handbook - Generalp. 3-25
  Chapter 3: Mathematics in Aviation Maintenance › Measurement Systems › Conventional (U.S. or English) System

  foot wide square steel plate fits diagonally through the cargo door opening and into the airplane. Measurement Systems Conventional (U.S. or English) System Our conventional (U.S. or English) system of measurement is part of our cultural heritage from the days ... some of the most important units. Some of the conventional units of measure are: inches, feet, yards, miles, ounces, pints, gallons, and pounds. Because the conventional system was not set up systematically, it contains a random collection of conversions…

• Aviation Weather Handbookp. 24-4
  24 Observations › 24.2 Surface Observations › 24.3.2 Automated Weather Observing System (AWOS)

  There are six types of AWOS systems: • AWOS-A: The AWOS-A system measures and reports altimeter only. • AWOS-AV: The AWOS-AV consists of an AWOS-A with a visibility sensor. • AWOS-1: The AWOS-1 system measures ... reports wind data (e.g., speed, direction, and gusts; temperature; dewpoint; altimeter; and density altitude). • AWOS-2: The AWOS-2 system measures and reports all of the parameters of an AWOS-1 system plus visibility. • AWOS-3: The AWOS-3 system…