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Oil discoloration associated with carbon particles - Civil Aviation Safety Alerts (CASA) No. 2016-01
… Pratt & Whitney Canada (P&WC) PT6A-64 and PT6A-66D engine oil system carbon contamination. Background: There have been numerous reported events of oil discoloration associated with carbon contamination in … contamination (indicated by a greenish hue) in the engine oil system can lead to several operational issues including …
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