Exposed Fuel Sensor Wiring May Ignite Fuel

The Australian Civil Aviation Safety Authority (CASA) is looking into the possibility of fuel tank problems with the popular Fairchild Metroliner 19-passenger regional aircraft.

The investigation stems from a September incident involving a Sunshine Express Metro III -- one of 59 Metroliners registered in Australia -- that made a forced landing. Investigators with the Australian Transport Safety Bureau found that chafed wiring for a fuel probe could generate an electrical spark, and ignite fuel vapors if exposed by low fuel levels.

Subsequently, the ATSB issued a warning that Metroliners with the same problem could potentially explode, and recommended CASA alert all Metroliner operators to review the airworthiness of their planes.

While the agency has not grounded any Metroliners, CASA is looking into the matter, according to spokesman Peter Gibson. In addition, the agency has contacted the Metroliner's manufacturer, Fairchild Industries, as well as the FAA to supply details of other instances of potentially dangerous fuel tank problems with Metroliner aircraft.

Still a popular choice with operators, several Metroliners are currently operating in the United States, as well, with charter passenger and cargo operations.

FMI: www.casa.gov.au, www.atsb.gov.au