Patent ID: 8231142

Claim:
A fluid conduit coupling arrangement in combination with a turbofan engine comprising a gas path defined by a bypass duct having inner and outer bypass duct walls, the outer bypass duct wall forming a firewall and having an exterior surface readily accessible for visual inspection of the engine before installation on an aircraft; the arrangement comprising: a first fluid line extending across the gas path between the inner and outer duct walls; a second fluid line extending outside of the engine; a bulkhead coupling connecting the first and second fluid lines in flow communication, the bulkhead coupling having mating female and male coupling members; the male and female coupling members being clamped to said firewall; an annular sealing member provided between the male and female coupling members, and a leak path defined between the annular sealing member and the exterior surface of the outer bypass duct wall, the leak path extending through the firewall, whereby leakage fluid may be detected by visual inspection of the outer duct wall when conducting a visual leak check of the engine if a leak should occur at the annular sealing member.