Aircraft Accident Investigation Report

36 The No. 4 cylinder intake tappet was heavily pitted on the face with jagged edges along the circumference of the tappet as seen in Figure 40. Figure 40 No.4 Intake Tappet The connecting rod bushings showed some signs scratching as seen in Figure 41. There was also scoring of the piston skirts. Figure 41 Connecting Rod Bushing The camshaft shows damage to all lobes of varying degrees, both to the face and edges of the lobes. The No. 4 intake lobe showed the greatest amount of damage. Spalling and worn edges were observed along with corrosion as seen in Figure 42. Figure 42 Engine Camshaft