Accident Details
According to the investigation report, the student pilot was conducting her first supervised solo flight. While attempting to land on runway 11R, she reported that the airplane was aligned too far to the left side of the runway. Following touchdown, the left main landing gear departed the paved surface, and the airplane subsequently collided with a taxiway sign.
Weather and Wind Conditions
The wind at the time was reported as coming from 190 degrees at 7 knots. No other weather information was provided in the source.
Pilot Experience
The student pilot had accumulated a total of 21 hours of flight experience, all of which were in the accident aircraft. This was her first solo flight under supervision.
Conclusion
The source does not state a probable cause for the accident. The report documents the sequence of events as described, without assigning causal factors.