NTSB Identification: ATL87FA136.
The docket is stored on NTSB microfiche number 34339.
Accident occurred Sunday, May 10, 1987 in COLLIERVILLE, TN
Probable Cause Approval Date: 08/31/1988
Aircraft: PIPER J4A, registration: N25020
Injuries: 2 Fatal.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
IT WAS REPTD THAT THE PLT WAS TAKING HIS PAX UP FOR A LCL PHOTOGRAPHIC FLT AT THE REQ OF THE PAX. WITNESSES REPTD THAT THE ACFT REMAINED OVER THE APT FOR TWO OR THREE CIRCUITS AND THEN DEPTD THE AREA IN THE DIR OF COLLIERVILLE. WITNESSES NEAR THE CRASH SITE REPTD THAT THE ACFT WAS MANEUVERING AT LOW ALTITUDE. IT WAS THEN REPTD THAT THE ENGINE SPUTTERED AND THE ACFT WAS OBSERVED TO BE IN A NOSE HIGH ATTITUDE. THE ACFT WAS THEN OBSERVED TO ROLL TO THE RIGHT AND DIVE INTO A RESIDENCE. INVESTIGATION REVEALED THAT CONDITIONS WERE CONDUCIVE TO SERIOUS CARBURETOR ICING. IN ADDITION, THE ENG PRIMER WAS FOUND UNLOCKED AND FOUR CYL HOLD DOWN STUDS FOR THE #2 CYL WERE FOUND FAILED AS A RESULT OF FATIGUE CRACKS. AN EXHAUST CRACK IN THE #2 CYL EXHAUST MANIFOLD EXHIBITED EVIDENCE OF A 1/2 INCH LONG BLOWBY LEAK.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:ENGINE ASSEMBLY,OTHER..FATIGUE
The National Transportation Safety Board determines the probable cause(s) of this accident to be:AIRSPEED..NOT MAINTAINED..PILOT IN COMMAND
The National Transportation Safety Board determines the probable cause(s) of this accident to be:EXHAUST SYSTEM,MANIFOLD/PIPE..LEAK
WEATHER CONDITION..CARBURETOR ICING CONDITIONS
CARBURETOR HEAT..NOT USED..PILOT IN COMMAND
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