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FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA
F S M/N PURPOSE
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1-0058 62/10/14 NR.SACRAMENTO,CALIF DOUGLAS DC-7 CR- 0 0 5 NS/CTR REVENUE PASSG DOM AIRLINE TRANSPORT, AGE
TIME - 0034 N6311C PX- 0 0 34 48, 15000 TOTAL HOURS,
DAMAGE-SUBSTANTIAL OT- 0 0 0 3036 IN TYPE, INSTRUMENT
RATED.
OPERATOR - UNITED AIR LINES,INC.
DEPARTURE POINT INTENDED DESTINATION LAST ENROUTE STOP
FRESNO,CALIF EUGENE,OREG SACRAMENTO,CALIF
TYPE OF ACCIDENT PHASE OF OPERATION
AIRFRAME FAILURE: IN FLIGHT IN FLIGHT: DESCENDING
PROBABLE CAUSE(S)
AIRFRAME - FLIGHT CONTROL SURFACES: VERTICAL STABILIZER,ATTACHMENTS
MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
MISCELLANEOUS ACTS,CONDITIONS - FLUTTER
AIRFRAME - FLIGHT CONTROL SURFACES: RUDDER SURFACES,ATTACHMENTS
MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM
PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
FACTOR(S)
MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
DIRECTIONAL CONTROL PROBLEM
SUSPECTED OR KNOWN AIRCRAFT DAMAGE
REMARKS- HI FREQ FATIGUE FAILURE OF VERT STAB,DUE FLUTTER INDUCD BY RUDDER ATTACH AND BEARING ASSY FAILURE.
