...jedynie w trybie usterki

[republican]

I am having difficulty with the understanding of the phrase "jedynie w
trybie usterki", here is the full context:

'Analiza prawdopodobienstwa wystapienia usterki dla ryzyka przekraczajacego
granice akceptowalnosci jedynie w trybie usterki'

Which I translate:

Probability analysis of fault occurance exceeding the acceptable limits of
risk , ????? ?????? ?????.'

Suggestions please in both languages

[elinka4]

.. only in defect mode

[republican]

elinka4 napisała:

> .. only in defect mode

Luv ya, Buzka