Good analysis here:
C-130 Fireball Due to Modification Error
A botched modification program unnecessarily changed the original design for a hydraulic system modification when a drawing was misread. A longer hydraulic hose was necessary after that change but an inappropriate design process short-cut meant the shorter hose remained listed as an alternative. The shorter hose was fitted to the modified fleet and resulted in chaffed electrical wiring and a fire that damaged an aircraft beyond economic repair over ten years later.
The fire was initially mis-diagnosed as an oxygen fire and flying resumed after checks of ox pipes before a second pause.
