As Moggy has already pointed out, a bad head cold can seriously affect ones ability to fly accurately. The pilot had a number instruments in front of him to enable him to fly blind. Of these the Turn and Bank Indicator and an Artificial horizon as well as his Airspeed indicator were the most important. If he lost concentration or he had difficulty reading these (or a fault had occurred) and instead he relied on his own impaired senses he would soon lose control. The GEE mentioned was a radar navigation equipment. This report seems to make nonsense of much of the so called eye witness reports in the earlier posts.

John