What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Weather conditions upon take-off from wrangell, AK had moderate to heavy snowfall. Crew taxied to departure end of runway, set the parking brake and reviewed departure and obstacle procedures. PIC called for line up checklist and crew completed checklist except parking brake release. PIC set take-off thrust and noticed an unusual amount of drag during take-off roll. The flight crew also noticed that the take-off thrust was below the minimum for take-off and the PIC had to push hard on throttles to advance throttles to power setting. Crew decided to continue take-off and during climbout the crew noticed parking brake handle was still pulled out and realized the parking brake was completely or partially still set. See attached statments for further info. privacy data omitted
As the FAA filed it
(-23) WEATHER CONDITIONS UPON TAKE-OFF FROM WRANGELL, AK HAD MODERATE TO HEAVY SNOWFALL. CREW TAXIED TO DEPARTURE END OF RUNWAY, SET THE PARKING BRAKE AND REVIEWED DEPARTURE AND OBSTACLE PROCEDURES. PIC CALLED FOR LINE UP CHECKLIST AND CREW COMPLETED CHECKLIST EXCEPT PARKING BRAKE RELEASE. PIC SET TAKE-OFF THRUST AND NOTICED AN UNUSUAL AMOUNT OF DRAG DURING TAKE-OFF ROLL. THE FLIGHT CREW ALSO NOTICED THAT THE TAKE-OFF THRUST WAS BELOW THE MINIMUM FOR TAKE-OFF AND THE PIC HAD TO PUSH HARD ON THROTTLES TO ADVANCE THROTTLES TO POWER SETTING. CREW DECIDED TO CONTINUE TAKE-OFF AND DURING CLIMBOUT THE CREW NOTICED PARKING BRAKE HANDLE WAS STILL PULLED OUT AND REALIZED THE PARKING BRAKE WAS COMPLETELY OR PARTIALLY STILL SET. SEE ATTACHED STATMENTS FOR FURTHER INFO. ^PRIVACY DATA OMITTED^