FLUID-LINE FITTINGS
Aircraft Tube and Hose Fittings
General aircraft fluid-line fitting types and their controlled installation needs.
Key reference points
- Fitting type must match the system and tube material.
- Flared and flareless ends require controlled preparation.
- Permanent joining systems need approved equipment and processes.
Organised training notes
1Serviceable mechanical connections
These related fitting families use a formed tube or hose end and approved mechanical hardware.
- 1.1 Bead and clampA formed bead, compatible hose and approved clamps may be used in designated low- or medium-pressure applications.
- 1.2 Flared fittingA controlled flare seats against the fitting cone; angle, finish, wall condition and alignment influence sealing.
- 1.3 Flareless fittingA sleeve or ferrule forms onto the tube through a specified preset process and then receives visual and dimensional inspection.
2Permanent and special connections
These connections require a manufacturer-approved system, dedicated equipment and qualified process control.
- 2.1 Permanent swaged fittingApproved swaged systems join or repair lines where routine disconnection is not required.
- 2.2 Special joining systemCryogenic or other manufacturer-specific fittings require the exact approved parts, equipment, training and inspection.
Training-reference boundary
This summary is not approved repair or maintenance data. Do not inspect, classify, select material, alter structure or perform a repair from this page alone. Use the current applicable SRM, AMM, engineering order, drawing and company procedures.