<p>Departing for warmer climes is this Orion example.  They were still quite new in the early 1980's.
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Orion derived its name from the in-house tour operator Horizon - knock out the H and Z and you have Orion.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/130275500@N02">G B_NZ</a>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/130275500@N02/15515611713/">Orion B737-200 G-BGTY at BHX</a>