Investigation number
198303444
Occurrence date
Location
70 km NW of Kingston SE
Report release date
Report status
Final
Investigation type
Occurrence Investigation
Investigation status
Completed
Occurrence class
Accident
Highest injury level
None

During cruise at about 1000 feet agl the engine began to run roughly and the pilot observed falling oil pressure indications. A severe engine vibration then developed and the pilot, after selecting a suitable forced landing area, shut down the engine. He delayed lowering the landing gear until he was satisfied that the selected area had a firm surface. The gear was selected down on very late final, but only the nose gear had time to become partially extended before touchdown. Lack of sufficient tension of a nut securing a conrod bolt of Number 1 cylinder allowed the conrod bearing cap to loosen causing loss of oil pressure and subsequent engine failure.

Aircraft Details
Manufacturer
Cessna Aircraft Company
Model
177
Registration
VH-IRO
Operation type
Private
Departure point
Parafield SA
Departure time
815
Destination
Robe SA
Damage
Substantial