Aviation Mechanic - General, Airframe, and Powerplant › II. Airframe › Task H. Aircraft Instrument Systems

AM.II.H.S3

Skill

Install range marks on an instrument glass.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - Airframe p. 10-79
Chapter 10: Aircraft Systems › Instrument Installations & Markings › Instrument Range Markings
Instrument Range Markings Many instruments contain colored markings on the dial face…
Aviation Maintenance Technician Handbook - Powerplant p. 10-21
Chapter 10: Engine Maintenance & Operation › Installation & Testing › Engine Instruments
10. Torquemeter. Instrument markings, ranges of operation, minimum and maximum limits, and…
Aviation Maintenance Technician Handbook - Powerplant p. 2-32
Chapter 2: Engine Fuel & Fuel Metering Systems › Fuel System Inspection & Maintenance › Fuel Quantity Gauges
glass for looseness and for proper range markings. Check the lines and connections for leaks. Be sure that there is no obstruction in the vent. Replace the instrument if it is defective. Pressure Warning Signal Inspect the entire installation…