Civil Aeronautics Board accident report into an incident that occurred on a Pan Am flight in Maracaibo.
Civil Aeronautics Board, US Department of Commerce
1941-05-24
US Department of Transportation Special Collections <a rel="nofollow" class="external autonumber" href="http://specialcollection.dotlibrary.dot.gov/Document?db=DOT-AIRPLANEACCIDENTS&amp;query=(select+87)">[1]</a>