The pilot’s improper leaning of the engine during an extended period of time, which caused an exhaust valve to become stuck and led to the partial loss of engine power during the accident flight. Contributing to the accident was the pilot’s decision to attempt a second takeoff without having the engine further examined.
NTSB
Improper maintenance leads to bent 172
Loss of engine power due to the throttle linkage becoming disconnected in flight due to improper maintenance.
Accident Case Study: Conflict in the Cockpit
The roughly 15-minute video recreates the events that led a Bombardier Challenger 605 to crash just seconds before landing at Truckee Tahoe Airport (KTRK) in California.
Missing hardware contributes to loss of control on landing
The loss of directional control during the landing roll, due to missing hardware which resulted in the separation of the nose landing gear torque links.
Three injured when pilot loses control while landing
The pilot’s failure to maintain directional control during landing, which resulted in a runway excursion.
Problems with fuel pump contributes to homebuilt’s crash
A total loss of engine power due to intermittent operation of both the engine-driven fuel pump and the electric boost pump. Contributing was the pilot’s delay in rejecting the takeoff, after the initial loss of engine power, which resulted in a collision with terrain.
Cessna 172 hits power lines after unstablized approach
The flight instructor’s delayed remedial action during an unstabilized approach, which resulted in an impact with powerlines and a subsequent loss of control
Overweight Diamond crashes, killing all four aboard
The pilot’s failure to maintain obstacle clearance, which resulted in controlled flight into terrain. Contributing to the accident was the pilot’s decision to operate the airplane above its maximum gross weight.
Safety alert issued for aluminum propellers
The new Safety Alert from the NTSB notes that aluminum propeller blades can be susceptible to fatigue cracking and fracture if a small nick, pit, or corrosion on the surface or edge is not found and repaired during preflight inspection or maintenance.