CS 25J993 Fuel system lines and fittings
ED Decision 2005/006/R
(a) Each
fuel line must be installed and supported to prevent excessive vibration and
to withstand loads due to fuel pressure and accelerated flight conditions.
(b) Each fuel
line connected to components of the aeroplane between which relative motion
could exist must have provisions for flexibility.
(c) Each
flexible connection in fuel lines that may be under pressure and subjected to
axial loading must use flexible hose assemblies.
(d) Flexible
hose must be approved or must be shown to be suitable for the particular
application.
(e) No
flexible hose that might be adversely affected by exposure to high
temperatures may be used where excessive temperatures will exist during
operation or after an APU shut-down.
(f) Each
fuel line within the fuselage must be designed and installed to allow a
reasonable degree of deformation and stretching without leakage.
[Amdt 25/1]
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