Summary
The FAA proposes to adopt a new airworthiness directive (AD) for turbocharged, reciprocating engine-powered airplanes and helicopters and turbocharged, reciprocating engines with a certain v- band coupling installed. This proposed AD was prompted by multiple failures of spot-welded, multi-segment v-band couplings at the tailpipe to the turbocharger exhaust housing flange (also referred to as ''spot- welded, multi-segment exhaust tailpipe v-band coupling''). This proposed AD would establish a life limit for the spot-welded, multi- segment exhaust tailpipe v-band coupling and require repetitively inspecting the spot-welded, multi-segment exhaust tailpipe v-band coupling. The FAA is proposing this AD to address the unsafe condition on these products.