By 08:58, the plane was heading towards New York City and descended from an altitude of 28,500 feet over New Jersey. From the time, at approximately 08:58, when Shehhi completed the turn toward New York to the moment of impact, the plane went into a sustained power dive, descending more than 24,000 feet in 4 minutes 40 seconds, for an average rate of over 5,000 feet per minute.[13] New York Center air traffic controller Dave Bottiglia reported he and his colleagues "were counting down the altitudes, and they were descending, right at the end, at 10,000 feet per minute. That is absolutely unheard of for a commercial jet."[15]