NTSB Identification: LAX83FVM04
14 CFR Part 91: General Aviation
Accident occurred Tuesday, December 07, 1982 in SAN FRANCISCO, CA
Probable Cause Approval Date: 12/07/1983
Aircraft: SWEARINGEN SA226-T, registration: N4273X
Injuries: 5 Uninjured.

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.

DURING ARRIVAL, THE WINDS WERE REPORTED FROM 350 TO 360 DEG AT 20 GUSTING 25 KTS, AND WHILE LANDING, THEY WERE FROM 360 DEG AT 21 KTS. THE ACFT'S MAX DEMO X-WIND CAPABILITY WAS 22 KTS. THE PLT REPORTED THAT DURING THE LANDING, THE POWER LEVERS WERE RETARDED TO IDLE, THEN TO REVERSE. WHILE ENTERING REVERSE, THE ACFT SWERVED TO THE LEFT, AWAY FROM THE X-WIND. THE PLT THEN ADVANCED THE THROTTLES OUT OF REVERSE TO LESS THAN FLT IDLE. AT THAT TIME, THE ACFT SWERVED TO THE RIGHT. THE POWER LEVERS WERE AGAIN REVERSED & BRAKES WERE APPLIED. HOWEVER, THE ACFT VEERED OFF THE RIGHT SIDE OF THE RWY. IT CONTINUED INTO MUD, THE NOSE GEAR COLLAPSED & BOTH PROPS WERE DAMAGED. THE PLT DID NOT FEATHER THE ENGS UNTIL AFTER BOTH PROPS HAD STOPPED TURNING. THE RIGHT PROP WAS FOUND IN THE FULL FEATHERED POSITION, THE LEFT PROP HAD NOT FEATHERED. REMOVAL OF THE RIGHT PROP DOME REVEALED NO APPARENT ABNORMALITIES OR INTERNAL DAMAGE. THERE WAS EVIDENCE THAT THE LEFT PROP HAD GONE BEYOND FULL REVERSE ON IMPACT. NO PREIMPACT FAILURE WAS FOUND.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

REASON FOR OCCURRENCE UNDETERMINED


Contributing Factors

WEATHER CONDITION..CROSSWIND




Contributing Factors

TERRAIN CONDITION..SOFT


Contributing Factors

TERRAIN CONDITION..WET

Index for Dec1982 | Index of months