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| Thursday, June 14, 2007 |
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Airworthiness Directives; Diamond Aircraft Industries Model DA 42 Airplanes
By FlyingNews @ 8:02 AM :: 389 Views ::
0 Comments :: FAA
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Airworthiness Directives; Diamond Aircraft Industries Model DA 42 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT).
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for the products listed above. This
AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation
authority of another country to identify and correct an unsafe condition on an aviation product. The
MCAI describes the unsafe condition as:
Shortly after an engine change, the aluminium fitting attached to the engine gearbox
holding lines and fittings of the propeller control system was found to be cracked. This
led to a pressure loss in the propeller control system following a control system
malfunction and led to an in-flight engine shutdown.
The broken fitting is part of the engine installation and was initially a steel part. It was
later modified by the engine manufacturer to an aluminium design.
Investigation determined that the area is critical for cracks due to combination of mass,
material and installation torque values.
Diamond Aircraft Industries incorporated with Design Change MÄM 42-184 an
additional bracket into production airplanes to improve the installations and prevent
vibration cracks.
We are issuing this AD to require actions to correct the unsafe condition on these products.
DATES: This AD becomes effective July 19, 2007.
On July 19, 2007, the Director of the Federal Register approved the incorporation by reference of
certain publications listed in this AD. |
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