Introduction
On 15 June 2015, a Cessna 152 operated by OKL ATO PWSZ w Chełmie experienced an incident during circuit flights at Depułtycze Królewskie airport (EPCD). The pilot, who was the sole occupant, was not injured.
Flight Details
The pilot was performing circuit flights with a planned duration of one hour, with rolling takeoffs and runway 19L in use. All landings were normal. The final landing before the anomaly was executed with flaps extended to 30°. During the subsequent takeoff roll, the pilot turned off carburetor heat, set flaps to 10°, and advanced the throttle to takeoff power. After liftoff, the pilot noticed abnormal climb performance. At approximately 100 feet AGL, while checking the aircraft configuration, the pilot observed an incorrect flap position.
At 350 feet AGL, the pilot performed a left turn, continued climbing, and executed a second left turn. After completing the second turn at 1,500 feet AGL, the pilot reduced power, flew at 70 knots, and verified the flap circuit breaker was properly engaged (pressed in). The pilot then reported the situation by radio. A landing on runway 19L was completed normally.
Maintenance Findings
Subsequent maintenance examination revealed that the brushes of the electric commutator of the flap control motor were sticking. The brushes were cleaned, and the commutator and rotor were flushed with technical alcohol. The rotor bushings were lubricated. The flap control system was reassembled and its operation was successfully tested. The aircraft was returned to service.
Conclusion
The incident was attributed to the sticking of the commutator brushes of the flap motor. No safety recommendations were issued.