What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Pilot states that while climbing through 700' the relative wind lifted the forward portion of the window and opened it. He reached across and held onto the window and attempted to re-lock it but was unable to fly both the aircraft and hold the window shut. He let go of the window to fly the aircraft and the window departed the aircraft landing in a privacy data omitted parking lot.
Weather from national weather service
Visibility: 10SM, winds 190/6, clouds OVC040, temp 7C
As the FAA filed it
PILOT STATES THAT WHILE CLIMBING THROUGH 700' THE RELATIVE WIND LIFTED THE FORWARD PORTION OF THE WINDOW AND OPENED IT. HE REACHED ACROSS AND HELD ONTO THE WINDOW AND ATTEMPTED TO RE-LOCK IT BUT WAS UNABLE TO FLY BOTH THE AIRCRAFT AND HOLD THE WINDOW SHUT. HE LET GO OF THE WINDOW TO FLY THE AIRCRAFT AND THE WINDOW DEPARTED THE AIRCRAFT LANDING IN A ^PRIVACY DATA OMITTED^ PARKING LOT.
WEATHER FROM NATIONAL WEATHER SERVICE
VISIBILITY: 10SM, WINDS 190/6, CLOUDS OVC040, TEMP 7C