Small Aircraft; Low Wing; 1 Eng; Fixed Gear
Flight Crew Commercial
Flight Crew Last 90 Days 52; Flight Crew Total 272; Flight Crew Type 39
Situational Awareness
Ground Event / Encounter Other / Unknown; Inflight Event / Encounter Weather / Turbulence
Aircraft Aircraft Damaged; Flight Crew Executed Go Around / Missed Approach; Flight Crew Took Evasive Action
Human Factors; Weather
Had a one hour banner flight. Upon return I was instructed to do a low pass of 250 ft over the banner box field following company operating procedures so a picture could be taken. Once I reached my altitude of 250 ft I put in full power to begin my climb but experienced wind shear [and] the plane [was] unable to climb or gain airspeed. My banner detached hitting another parked airplane causing minor damage to its right wing.
Banner tow pilot reported encountering wind shear that limited the climb capability; causing the banner to detach and hit a parked aircraft.