AUTHORITIES will allow a type of helicopter used for joy flights to continue flying – despite issuing an urgent safety notice to fix a potential fire hazard.
The Robinson R44 is the same model helicopter in which two filmmakers recently died.
A shortage of replacement parts from the US for the R44 means only a fraction of the helicopters here will be fixed, the Herald has learned.
The Australian filmmaker Andrew Wight and a US colleague, Mike deGruy, were killed on February 4 when their R44 crashed and burned shortly after lift-off at Jaspers Brush, in southern NSW.
Even though the crash investigation has barely begun, the Australian Transport Safety Bureau is sufficiently concerned about the fire risk to urge owners to install revised fuel tanks, lines and vents ”as soon as possible”.
While the R44s are popularly used for private charters and aerial photography, the safety advisory notice does not make the changes compulsory.
The recommended changes include flexible tank bladders and vent valves to help prevent fuel gushing out on impact and a new rotor brake switch to reduce the chance of igniting fuel vapour.
The safety notice comes three weeks after a US aviation lawyer said Robinson Helicopters knew its aluminium fuel tanks and rigid fuel lines could burst on impact.
”The fuel just sprays into the occupant space,” Ladd Sanger said. ”It’s very dangerous, as any time you get atomised fuel and a spark, you have spontaneous combustion.”
Although serviced regularly, the filmmakers’ helicopter had not been retrofitted with a fuel bladder kit at the time of the crash, investigators said.
Robinson says it has supplied kits for about 40 of the 4000 R44s built with rigid tanks in the US and worldwide. Only 25 kits for Australia’s 457 R44s are on the way in the short term, an aviation source said.
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