At 0456 mountain standard time on November 18, 1979, Transamerica Airlines' Logair Flight 3N18, a Lockheed L-188C Electra, departed Hill Air Force Base, Ogden, Utah, with three crewmembers and 27,552 lbs of cargo, on an instrument flight rules (IFR) flight to Nellis Air Force Base, Nevada. After departure from Hill AFB, and while climbing from 12,000 to 13,000 feet, the flight indicated to Salt Lake departure control that they had lost all electrical power, the flight requested no-gyro vectors to visual flight conditions and clearance for an immediate descent to a lower altitude. During the descent, the aircraft attained a high airspeed and high rate of descent and disintegrated in flight. The three crewmembers were killed, and the aircraft was destroyed. The wreckage was dispersed along a path about 1 1/2 miles long on an abandoned airport about 4 nmi south of the Salt Lake City International Airport. The National Transportation Safety Board determines that the probable cause of the accident was a progressive failure in the aircraft's electrical system leading to the disabling of erratic performance of some critical flight instruments and flight instrument lighting while the flight was operating in night instrument meteorological conditions. As a result of these conditions, the flightcrew could not resolve the instrumentation anomalies to determine proper aircraft reference, and became disoriented and lost control of the aircraft. The crew's efforts to regain control of the aircraft imposed aerodynamic loads which exceeded design limits of the aircraft and caused it to break up in flight.


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    Titel :

    Aircraft Accident Report - Transamerica Airlines, Inc., Lockheed L-188, N859U, Salt Lake City, Utah, November 18, 1979


    Erscheinungsdatum :

    1980


    Format / Umfang :

    50 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch