Hosed

Engine began running rough in cruise, the pilot diverted and the aircraft was landed without damage. Investigation found the fuel line between the fuel flow transducer and fuel flow divider was loose at the flow divider. Although it seems unlikely, the aircraft operator has to consider the possibility that this fuel line came loose by itself in the five days and 23 hours of flying since the last scheduled inspection....

Key Takeaways:

• Aircraft experienced a range of hose failures involving fuel, oil, hydraulic, and vacuum systems across different aircraft types.
• Causes of failure included loose connections, chafing leading to burning, material deterioration, splitting, and potential manufacturing defects even in newly installed hoses.
• These failures resulted in serious consequences such as engine malfunctions, significant fluid loss requiring emergency landings, and inoperative critical backup systems.

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