NTSB Identification: FTW91FA042.
The docket is stored on NTSB microfiche number 44319.
Nonscheduled 14 CFR
Accident occurred Monday, February 18, 1991 in THORNTON, TX
Probable Cause Approval Date: 03/31/1993
Aircraft: CESSNA 172N, registration: N5112K
Injuries: 1 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.
WEATHER WAS REPORTED AS BEING SEVERE BY LOCAL RESIDENTS WITH INTENSE THUNDERSTORMS, HAIL AND HIGH WINDS. WITHIN .25 MILES OF IMPACT TREES WERE BLOWN DOWN IN VARIOUS DIRECTIONS. HEAVY FOLIAGE WAS ALSO BLOWN OVER IN INCONSISTENT PATTERNS. WITNESSES REPORTED VISIBILITY DOWN TO A FEW HUNDRED METERS IN THE THUNDERSTORMS. THE FLOOD PLANE IN WHICH IMPACT OCCURRED FLOODED AND SUBMERGED THE WRECKAGE. EN ROUTE AND DESTINATION WEATHER WAS FORECAST TO BE VMC, WITH A LARGE CELL OF THUNDERSTORMS NEAR THE PROPOSED ROUTE OF FLIGHT. AT 1048 THE PILOT REPORTED TO ATC THAT HE WAS AT 4,000 FEET, HOWEVER, RADAR SHOWED HIM AT 3,000. SUBSEQUENT ATTEMPTS TO CONTACT THE PILOT WERE UNSUCCESSFUL. LAST RADAR CONTACT WAS DESCENDING THROUGH 2,000 FEET.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE PILOT'S DECISION TO FLY INTO KNOWN ADVERSE WEATHER AND THE WET MICROBURST. A FACTOR WAS HIS DISREGARD FOR THE FORECAST.
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