CS 31HB.46 Pressurised fuel systems

• ED Decision 2009/005/R found in: CS-31HB Amdt 1 - Hot Air Balloons (Dec 2011)

CS 31HB.46 Pressurised fuel systems ED Decision 2009/005/R (a) For pressurised fuel systems each part, must be tested to, or have a safe working pressure of at least twice the maximum pressure to which the system will be subjected in normal operation. In the test, no part of the system may leak, fail or malfunction. (b) All parts of a pressurised fuel system must be generally robust and capable of withstanding impact and abuse loads and related deformation that are likely to occur in service. (See [AMC 31HB.46(b)](#_DxCrossRefBm388745787)) (c) If applicable, parts of the pressurised fuel system must be permanently marked to preclude incorrect installation. (d) No part of the system may have an unprotected rigid extension that could be broken in any likely impact situation. (See also [CS 31HB.45(f)](#_DxCrossRefBm388745779)). (e) Where fuel systems include demountable fuel lines, a self-sealing coupling, or other means must be fitted to each outlet of each line to avoid the release of hazardous quantities of fuel should a fuel cell valve be inadvertently operated without a fuel line outlet connected.