Which is typical time of landing gear extension in normal conditions ? I would like to know it especially for the ATR-42 but any other typical value is welcome ! Furthermore can you provide any link to data sheet for ATR-42 technical data about landing gear ?
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$\begingroup$ You mean as in how long it takes for the gear to go from the up position to full down all green & vice versa? $\endgroup$– RAZERZDec 5, 2017 at 9:51
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$\begingroup$ Yes please ! That's the right question ! $\endgroup$– DavideDec 7, 2017 at 7:49
1 Answer
In this youtube video showing landing gear maintenance operations on an ATR42, I'd say about 11 seconds for both extension and retraction.
A more precise timing could be gathered from an uninterrupted cockpit video, measuring from gear lever action action to "three green" on.