Aviation Mechanic - General, Airframe, and Powerplant › I. General › Task D. Fluid Lines and Fittings

AM.I.D.R4

Risk management

High-pressure fluid systems.

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 - General p. 9-7
Chapter 9: Fluid Lines & Fittings › Beading › Fluid Line End Fittings
approved for particular fluid application should be used when joining pipe threads to prevent seizing and high-pressure leakage. Use care when applying thread lubricant so that the lubricant does not enter and contaminate the system. Do not use lubricants ... oxygen lines. Oxygen reacts with petroleum products and can ignite (special lubricants are available or oxygen systems). Machine threads have no sealing capability and are similar to those used on common nuts and bolts. This type of fitting is used…
Aviation Maintenance Technician Handbook - General p. 9-9
Chapter 9: Fluid Lines & Fittings › AN Flared Fittings › MS Flareless Fittings
MS Flareless Fittings MS flareless fittings are designed primarily for high-pressure…
Aviation Maintenance Technician Handbook - General p. 9-1
Chapter 9: Fluid Lines & Fittings › Steel
negligible fluid pressures, such as instrument lines and ventilating conduits. Tubing made from 2024-T3, 5052-O, and 6061-T6 aluminum alloy materials is used in general purpose systems of low and medium pressures, such as hydraulic and pneumatic ... systems, and fuel and oil lines. Steel Corrosion-resistant steel tubing, either annealed CRES 304, CRES 321, or CRES 304-1⁄8-hard, is used extensively in high-pressure hydraulic systems (3,000 psi or more) for the operation…