CHESAPEAKE, VA, USA
N6266L
GRUMMAN AMERICAN AA-1B
THE PLT TOOK OFF ON RWY 4 & MADE A CLIMBING LEFT TURN FOR A DOWNWIND DEPARTURE. AT APRX 900 FT, THERE WAS A PARTIAL LOSS OF POWER TO ABOUT IDLE RPM. THE PLT STATED THAT HE SWITCHED FUEL TANKS, APPLIED CARBURETOR HEAT & PUMPED THE THROTTLE, ALL TO NO AVAIL. HE TURNED BACK TO THE ARPT, BUT WAS UNABLE TO REACH THE RWY. THE NOSE GEAR COLLAPSED DURING A LANDING ON SOFT TERRAIN, APRX 150 YARDS SHORT OF RWY 22. AN INVESTIGATION REVEALED THAT THE INSIDE SCREEN & SPONGE ELEMENT OF THE AIR INTAKE FILTER, PN BA-4210, HAD COME LOOSE. SUBSEQUENTLY, THE SCREEN & SPONGE HAD BECOME LODGED IN THE THROAT OF THE CARBURETOR AIR BOX & OBSTRUCTED THE AIRFLOW TO THE CARBURETOR. THE METAL IN THE SCREEN WAS FOUND TO BE NON-MAGNETIC. AD 81-15-03 HAD BEEN ISSUED TO CORRECT THE FILTER PROBLEM BY REPLACING THE ALUMINUM SCREEN WITH A STEEL SCREEN.
Source: NTSB Aviation Accident Database
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