Galesburg, IL, USA
N740SP
CESSNA 172S
Same as Factual Information
During a 50 hour maintenance inspection, an airframe and power plant mechanic discovered that the airplane's firewall was substantially damaged. The operator was not able to determine when the accident flight occurred or the pilot responsible. The airplane's last maintenance inspection occurred about three months prior to the discovery. Numerous pilots flew the airplane during that period, none of which reported an event that would result in damage to the airplane.
Firewall damage reported by maintenance personnel that occurred during an unknown phase of flight, because the accident flight and pilot could not be determined.
Source: NTSB Aviation Accident Database
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