Text in force at CS29-12: from CS29-0, effective 14 Nov 2003.
(a) Each fuel tank must be able to withstand, without failure, the vi bration, i nertia, fl uid, and structural loads to whic h it m ay be subject ed i n operation.
(b) Each flexible fuel tank bladder or liner must be approved or shown t o be sui table for t he particular appl ication and m ust be punct ure resistant. Punct ure resi stance must be shown by meeting t he ETSO–C 80, paragraph 16.0, requirements usi ng a m inimum punct ure force of 1646 N (370 pounds).
(c) Each i ntegral fuel t ank m ust have facilities for inspection and repair of its interior.
(d) The m aximum exposed surface temperature of al l com ponents i n t he fuel t ank must be less b y a safe m argin th an th e lo west expected auto-ignition temperature of the fuel or fuel vapour i n t he t ank. C ompliance wi th t his requirement m ust be shown under all operating conditions and under al l norm al or m alfunction conditions of all components inside the tank.
(e) Each fuel t ank i nstalled i n personnel compartments must be i solated by fume-proof and fuel-proof encl osures t hat are drai ned and vented to t he ext erior of t he rot orcraft. The design and construction of t he encl osures m ust provide necessary protection for t he t ank, m ust be crash resistant during a survivab le impact in accordance with C S 29.952, and m ust be adequate to withstand l oads and abrasi ons t o be expected in personnel compartments.
ED Decision 2003/016/RM · Source