What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Pilot stated that he departed Reading airport (rdg) on runway 31. After rotation and gear retraction, the aircraft accelerated to 150 knots. At about 500 feet altitude, the cockpit canopy departed the aircraft. Pilot returned the aircraft to rdg without incident. Canopy was found in an open grass field, about 1 mile from the end of runway 31. Pilot stated that he inadvertently overlooked latching/locking the canopy. In order to prevent a recurrence of this problem, the aircraft is being fitted with a cockpit warning system, linked with the latching mechanism, which includes a horn and light to alert the pilot if the throttle is advanced and the canopy is not latched.
As the FAA filed it
(-23) PILOT STATED THAT HE DEPARTED READING AIRPORT (RDG) ON RUNWAY 31. AFTER ROTATION AND GEAR RETRACTION, THE AIRCRAFT ACCELERATED TO 150 KNOTS. AT ABOUT 500 FEET ALTITUDE, THE COCKPIT CANOPY DEPARTED THE AIRCRAFT. PILOT RETURNED THE AIRCRAFT TO RDG WITHOUT INCIDENT. CANOPY WAS FOUND IN AN OPEN GRASS FIELD, ABOUT 1 MILE FROM THE END OF RUNWAY 31. PILOT STATED THAT HE INADVERTENTLY OVERLOOKED LATCHING/LOCKING THE CANOPY. IN ORDER TO PREVENT A RECURRENCE OF THIS PROBLEM, THE AIRCRAFT IS BEING FITTED WITH A COCKPIT WARNING SYSTEM, LINKED WITH THE LATCHING MECHANISM, WHICH INCLUDES A HORN AND LIGHT TO ALERT THE PILOT IF THE THROTTLE IS ADVANCED AND THE CANOPY IS NOT LATCHED.