alb (02/11/83)
NASA faces yet another possible delay in the launch of STS-6. A leak in the liquid oxygen heat exchanger found a couple days ago, originally thought to be in test equipment, is probably in the replacement engine itself, officials said today. If their fears are confirmed, it will mean that another spare engine will have to be flown in, or one will have to be taken from the Columbia. If either approach is taken, it will mean another couple weeks will slip by before STS-6 launches.