Wrinkled Wing Skin Discovered After Cross-Country Flight (N4666J)

Incident Details

A flight instructor completed a check-out in an airplane, followed by a cross-country instructional flight. Prior to both flights, no damage to the airplane was detected. After the cross-country flight, wrinkled skin was discovered on top of both wings. The instructor stated that the damage was not a result of anything that had transpired during the cross-country flight.

Investigation

The Federal Aviation Administration (FAA) conducted interviews with numerous pilots who had recently flown the airplane. These interviews failed to reveal who was responsible for the damage or how it was caused. The origin of the wrinkled skin remains undetermined based on available information.

Conclusion

The cause of the wrinkled skin on both wings could not be established. No probable cause was identified in the investigation.