November 24, 201510 yr Hi all. My home airline was Ozark (CMI). Most commonly, we would get a DC-9-30 or -40 aircraft on most flights. I am trying to find out if these aircraft were equipped with an INS type navigation system, or were they strictly VOR/NDB radio navigation? David Norman Paul
November 24, 201510 yr Given that they were short haul aircraft on short haul routes, I expect the INS was not installed. Maintenance was expensive and the time to align was excessive for the usage these aircraft got. DJ
November 24, 201510 yr Author They did have a few routes that were a little longer, like CMI-LGA, CMI-SAN, CMI-IAD. But you are correct, they did have some fairly short routes. Heck, given that I think they purchased most of their aircraft used from other airlines, they may have had some with, some without INS. I'd love to know for sure. David Norman Paul
November 26, 201510 yr I well remember their F-27s and DC-9s at DCA and, later, IAD. There is a fair amount of data on line regarding their routes, advertising, and aircraft, but not the equipment of the aircraft. I do know that most of the -9s were ex-TWA so that might be another area to look into. You might get in touch with these folks https://airandspacemuseum.org/news/?tag=ozark-airlines and see if they can help. DJ
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