![]() The cost of intermittent faults per aircraft or system per year can vary widely depending on a number of factors, such as the age and complexity of the aircraft or system, the types of system components and wire harnesses that are affected, and the severity and frequency of the faults. The cause of the problem was later found to be an intermittent fault in the car’s electronic throttle control system, which could cause the system to enter a “fail-safe” mode that would maintain the throttle at its current position, even if the driver tried to reduce speed by applying the brakes.Ĭosts of Undiagnosed and Unrepaired Intermittent Faults Drivers reported that their cars would suddenly accelerate without warning, causing them to lose control and crash. In 2005, Toyota Camry vehicles were suddenly plagued by acceleration issues.The computer then attempted to correct the error by moving the rocket’s nozzles, which caused the rocket to veer off course and break apart. The investigation into the crash found that an intermittent fault had occurred in the rocket’s guidance system, causing it to send incorrect data to the rocket’s onboard computer. This rocket was launched by the European Space Agency (ESA) on its maiden flight, but it exploded just 40 seconds after liftoff. In 1996, the Ariane 5 disaster was caused by an undiagnosed intermittent fault.Aerospace and automotive industries experience safety issues and catastrophic losses tied to the intermittent failure mode. The cause of the crash was determined to be a malfunctioning air data unit that provided incorrect airspeed information to the aircraft’s instruments, which was caused by an intermittent fault in the unit’s static ports.Īviation is not the only industry susceptible to intermittent faults. Birgenair Flight 301: On February 6, 1996, Birgenair Flight 301, a Boeing 757-200, crashed shortly after takeoff from Puerto Plata, Dominican Republic, killing all 189 passengers and crew on board.The fault was intermittent and had gone undetected during routine maintenance checks. ![]() The cause of the explosion was traced back to an electrical fault that had caused a spark in the aircraft’s fuel tank. TWA Flight 800: On July 17, 1996, TWA Flight 800 exploded in mid-air off the coast of Long Island, killing all 230 passengers and crew on board.The problem with the air conditioning system was an intermittent fault that had gone undetected, and hence unrepaired ![]() The cause of the crash was traced back to a problem with the aircraft’s air conditioning system, which led to the crew becoming incapacitated due to lack of oxygen.
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