The FAA released Emergency AD 2014-12-52 on June 10, 2014, due to reports of LPT2 blade separations. Compliance of the AD is to prevent blade failure, engine in-flight shutdowns and aircraft damage.
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Due to high heat generated during initial start-up, APC starter generators currently found on some P&W305 engines aren't performing as expected and falling short of projected TBO, creating some reliability uncertainty.
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The generator control panel controls the voltage for generators that charge batteries, start motors and control the ground power unit. When working properly, these generators share the electrical load.
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For the Pratt & Whitney 500 engine models, there are a number of Service Bulletins that have become hot items. These can be accomplished at access for cause but they will be addressed at either a Hot Section Inspection or overhaul, whichever occurs first.
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Not sure why the engine computer light begins to flash after several flights and the only fault you can see is fault code 237, ECTM Buffer Filled? It could be an uncommanded engine shutdown.
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Duncan Aviation Technicians recommend a reconditioning program for the Lear/Bendix starter 6608268-6 on Learjet 35/55 aircraft.
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Assessing the health of your aircraft’s engine takes on many forms. One form often not weighed heavily enough is engine externals.
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Extreme temperatures affect the accuracy of the Air Data Computer altitude display. With WAAS / LPV approaches, this is no longer a factor.
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General Electric Service Bulletin (SB) CF34-72-0252 replaces the #5 bearing that was introduced on newer production engines, starting with engine S/N 950333, or with the incorporation of SB 72-0176.
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SB 72-0175 changes the compliance date from January 1, 2013, to the next shop visit.
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