Primary finding
Probable cause
An unknown event that resulted in damage to the airplane's firewall.
Investigator assessment
Analysis narrative
Damage to the airplane's firewall was discovered during a 100-hour inspection. The airplane belongs to an aero club and was rented by several pilots prior to the damage being discovered; consequently, the operator could not determine when the airplane was damaged.
Source record
Factual narrative
Damage to the airplane's firewall was discovered during a 100-hour inspection. The airplane belongs to an aero club and was rented by several pilots prior to the damage being discovered; consequently, the operator could not determine when the airplane was damaged.