Decided to include this image to show how most of our gear-up  accidents are resolved. ARFF Firefighters use airbags to lift the aircraft off the runway to try and lower and lock the inop gear. Works 90% of the time.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/14727154@N03">John Murphy</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/kingair42/3833777895/">Citation Gear Malfunction</a>