纽约飞机水上迫降新闻分析之一

据美联社报道：
The pilot twice told air controllers that he was unable to make the proper turn after reporting a "double bird strike."
The tower believed Sullenberger meant that both his jet engines had been damaged by bird impacts.

从这段文字中可以看出：机长并没有报告过发动机损毁。

如果这是相关内容的全部，就产生了两个问题：
1. 机长为什么不报告发动机的运行情况？
2. 塔台为什么不跟踪询问发动机的运行情况，而凭猜测作决定？