What happened
The incident occurred while a Bellanca aircraft was engaged in banner towing operations. The pilot had successfully hooked up with the banner and was maneuvering the aircraft when control was unexpectedly lost, leading to an impact with the ground. Following the collision, the aircraft burst into flames.
Witnesses observed the aircraft at full power as it entered a nose-high attitude before stalling to the right. Observers noted that the aircraft appeared to be moving slower than usual during the phase of picking up the banner. The operator later confirmed that the banner being towed was at the maximum weight and length permitted for this specific type of operation.
The investigation
Investigation findings focused on the mechanical state of the aircraft and the operational parameters at the time of the accident. The primary factor identified was the loss of control during a high-load maneuver. The operator's report regarding the banner specifications provided critical context for the performance limitations encountered by the pilot.
Findings
The sequence of events indicates that the aircraft stalled while under significant aerodynamic load from the banner. The combination of full power and a nose-high attitude suggests an inability to maintain sufficient airspeed. The observation that the aircraft seemed slower than usual points to the drag imposed by the heavy banner configuration. Stall was the immediate cause of the loss of control, exacerbated by the maximum weight/length banner which exceeded typical performance margins for the maneuver.
Safety message
Operators must carefully evaluate the weight and length of towed banners against the aircraft's performance capabilities. Maneuvering with heavy loads requires precise airspeed management to prevent stalls, especially when operating at full power in a nose-high attitude.