Page:CAB Accident Report, American Airlines Flight 29.pdf/2

 Investigation revealed that, before departure from Boston, the trip had been cleared from that point to LaGuardia Field, New York, with Floyd Bennett Field as an alternate. When it became apparent from a later weather report that conditions at Hartford were below the minimum prescribed by the Civil Aeronautics Administration, the trip was contacted by radio, at 6:26 a.m., and Philadelphia was named as an additional alternate in accordance with approved procedure.

PROBABLE CAUSE:

Action of the pilot in attempting a landing under conditions which were below the minimums set forth in the company's weather letter of competency as approved by the Civil Aeronautics Administration.