The most common cause of compressor stalls in early versions of the Pratt & Whitney JT9D engines powering the 747-100/200 was the use of excessive reverse when the airplane had slowed too much for the degree of reverse used. This was exacerbated if it was a high-time engine. Typically a compressor stall in these engines back then was not written up.
COPYRIGHT 2004 The Gale Group Inc. Human intelligence, or HUMINT, is the gathering of information through human contact. It is, along with signals intelligence and imagery intelligence (SIGINT and IMINT respectively), one of the three traditional means of intelligence gathering.
COMINT, which is defined to be communications among people, will reveal some or all of the following: 1  Who is transmitting. 2  Where they are located, and, if the transmitter is moving, the report may give a plot of the signal against location. 3  If known, the organizational function of the transmitter.