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Tue, Dec 02, 2008

AD: Pratt & Whitney

AD NUMBER: 2008-24-10
MANUFACTURER: Pratt & Whitney
SUBJECT: Airworthiness Directive 2008-24-10
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 follows: There have been several reported incidents of high altitude, dual engine flameout on JT15D-5 engine powered aircraft operating in certain meteorological conditions. Subsequent to the investigation of incidents, review of the engine design has revealed that the Fuel Control Hydro Mechanical Unit (HMU) P3 servo can be exposed to excessive moisture and freezing. We are issuing this AD to prevent engine flameouts of one or both engines, caused by excessive moisture and freezing in the P3 servo during certain flight conditions.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/

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