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Old 23rd Feb 2015, 14:50
  #55 (permalink)  
Join Date: Jul 2013
Location: Everett, WA
Age: 64
Posts: 2,325
Why is the 757 bleed air quality apparently worse than that on 767?
As I noted earlier, there appears to be a significantly higher rate of 'fume' events on Rolls powered 757 (and 747) than for Pratt (and GE) - likely due to the more complex lube system required on a 3 spool engine.
Over half the 757s built were equipped with Rolls engines, where as less than 4% of all 767s built were fitted with Rolls engines.
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