A modified Weibull distribution model is proposed for aviation equipment generally obeyed Ushape curve, which is more standard than exponential distribution and Weibull distribution. The Maximums Likelihood Estimation (MLE) for point estimation and confidence interval estimation method are deducted under progressively typeII censored data. Furthermore, according to the algorithm of the percentile bootstrap method an example based on matching a set of failure data is given to obtain the results of point estimation and confidence interval estimation under modified Weibull distribution. And through the comparison between bootstrap method and Bayes method, the results show that the bootstrap method is more accurate and can be simpler under the same confidence level, which provides an available theoretical analysis method for the problem of reliability estimation under progressively typeII censored plan