headstay failure
Although I concur with the advice to replace standing rigging every ten years, you should know that it's possible to save the rig after a headstay fails. We lost the headstay on an Olson 30 about 15 years ago on an upwind leg of a race. Fortunately, we were flying a fairly new kevlar genny, the luff of which was strong enough to hold the mast up for the few moments it took us to do a 180. Once the main filled downwind there was enough pressure on the mast to hold it up. We eased the backstay all the way, ran the spinnaker halyard to the headplate and then tensioned both the halyard and the backstay, in that order. We waited until another boat was alongside before taking the sails down in case the mast collapsed and crew had to jump overboard. It didn't.