9 research outputs found
Failure analysis of a brazed, stainless steel fuel injection line
An aircraft fuel line was found to have fractured and caused an in-flight fire. A brief history of
the general problem of cracking in brazed stainless steel fuel injection lines places this failure in
context. The fracture mechanism was likely to be fatigue due to vibrations. Other factors
contributed to the failure, such as an inappropriate braze repair and incorrect bend radius and
location dimensions. The effectiveness of current airworthiness directives and manufacturer
service bulletins are discussed. Alternative designs are suggested to prevent recurrence