Has anyone noticed background sound dropping out, specifically the propeller noise heard from within the plane. At about 33 minutes into the movie, when the pilot is talking to the woman who wants to exit from the front of the plane, the prop sounds is heard from one camera angle and not from another. I believe this happens later on as well. Also, at 2:19:45 the sound drops almost entirely except for the effects channel. I switched to the 2nd audio track, Digital 2/0 (dvd player lists it this way) and the sound was fine. I went back to the earlier part (0:33) of the movie where I noticed the problem and switched to the 2nd Audio track and the sound seemed good. So it appears that the Digital 5.1 ( dvd player lists it as 3/2.1 ) audio track has some problems. I was wondering if this is a DVD problem or just the way the movie was made. The DVD package lists Dolby Digtal 5.1 and 2.0 tracks, so it appears this first one has the issues.