A TWA 707-300 aircraft crashed during takeoff from Roma-Fiumicino Airport, Italy, resulting in the loss of 50 passengers and 23 survivors. The aircraft began its takeoff run at 14:05 on runway 25, accelerating to 80 knots. The no. 2 engine’s instruments indicated zero thrust, followed by a reverse thrust deployment light. The crew immediately aborted the takeoff, reducing speed below V1. The aircraft then veered to the right and struck a pavement roller, causing significant damage and ultimately leading to a crash. The primary cause was a malfunction in the reverse thrust system of the no. 2 engine, resulting in a lack of pressure in the pneumatic clamshell door mechanism, which allowed for substantial forward thrust.A TWA 707-300 aircraft crashed during takeoff from Roma-Fiumicino Airport, Italy, resulting in the loss of 50 passengers and 23 survivors. The aircraft began its takeoff run at 14:05 on runway 25, accelerating to 80 knots. The no. 2 engine’s instruments indicated zero thrust, followed by a reverse thrust deployment light. The crew immediately aborted the takeoff, reducing speed below V1. The aircraft then veered to the right and struck a pavement roller, causing significant damage and ultimately leading to a crash. The primary cause was a malfunction in the reverse thrust system of the no. 2 engine, resulting in a lack of pressure in the pneumatic clamshell door mechanism, which allowed for substantial forward thrust.