ED Decision 2015/009/R
Where bleed air is used to cool or to pressurise areas of the Engine, the functions of which could be detrimentally affected by the ingress of foreign matter (e.g. sand or dust), the design must be such that the passage of foreign matter of unacceptable quantity or unacceptable size is precluded.
[Amdt. No.: E/1]
[Amdt. No. E/4]
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