What happened
On 8 July 2007, a Luscombe 8E Silvaire Deluxe, registration G-BPZE, was conducting a private flight from Hardwick Airfield in Norfolk. Upon arrival, the pilot assessed the airfield conditions and decided to utilize the grass runway. While the grass appeared dry, it had not been recently maintained. After completing necessary pre-flight checks and engine power assessments, the pilot commenced the takeoff roll.
During the acceleration, the tail of the aircraft lifted as expected. However, as the aircraft reached the point where rotation typically occurs, the airspeed remained insufficient for flight. In an attempt to find more runway length, the pilot steered toward the left side of the strip. Although the aircraft eventually became airborne at the very end of the runway, the wheels struck standing crops located beyond the runway boundary. This impact caused the aircraft to pitch nose-down and flip, ultimately coming to rest in an inverted position. Both the pilot and the passenger sustained minor injuries and were able to exit the aircraft without assistance.
The investigation
Investigators examined the runway conditions and the aircraft's performance during the takeoff roll. It was noted that the pilot had previously used this specific section of the grass strip with similar weight configurations without issue. However, the investigation identified that the wind conditions were highly variable, shifting between 220º and 320º at approximately 5 knots. Furthermore, while the surface appeared firm, the investigation established that the runway surface was actually less firm than the pilot had initially judged.