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

AM.I.D.R6

Risk management

A loosened fitting or a hose that has moved out of position.

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 - Powerplant p. 8-8
Chapter 8: Engine Removal & Replacement › Preparing the Engine for Removal › Disconnection of Lines
unit to which they lead, or by a hose clamp. The firewall fittings for some lines have a quickdisconnect fitting that contains a check valve to prevent the system from losing fluid when the line is disconnected. Metal tubing ... point at which two lengths of it are joined together by a length of rubber hose. Such a disconnection is made by loosening the hose clamps and sliding the length of rubber hose over the length of tubing that remains…
Aviation Maintenance Technician Handbook - General p. 9-21
Chapter 9: Fluid Lines & Fittings › Twisting
least two hose diameters from the end fittings. Avoid clamp locations that restrict or prevent hose flexure. Twisting Hoses must be installed without twisting to avoid possible rupture of the hose or loosening of the attaching nuts. Use of swivel ... identification stripe running along its length. This stripe should not spiral around the hose. Figure 9-39. Reusable fittings for medium-pressure hose. Bending To avoid sharp bends in the hose assembly, use elbow fittings, hose with elbow-type…
Aviation Maintenance Technician Handbook - General p. 9-4
Chapter 9: Fluid Lines & Fittings › Tube Flaring › Instructions for Rolling-Type Flaring Tools
benders. Figure 9-7. Size identification. Cut the tube squarely and remove all burrs. Slip the fitting nut and sleeve on the tube. Loosen clamping screw used for locking the sliding segment in the die holder. This permits their separation…